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  1. Article ; Online: Recent results related to excited states of 6Be and 10He

    Wolski R. / Zhukov M. V. / Ter-Akopian G. M. / Stepantsov S. V. / Slepnev R. S. / Sidorchuk S. I. / Sharov P. G. / Parfenova Yu. L. / Mukha I. G. / Nikolskii E. Yu. / Kuzmin E. A. / Krupko S. A. / Kaminski G. / Jaluvkova P. / Grigorenko L. V. / Gorshkov A. V. / Golovkov M. S. / Ershov S. N. / Chudoba V. /
    Egorova I. A. / Bezbakh A. A. / Fomichev A. S. / Yukhimchuk A. A. / Filchagin S. V. / Kirdyashkin A. A. / Maksimkin I. P. / Vikhlyantsev O. P.

    EPJ Web of Conferences, Vol 38, p

    2012  Volume 15002

    Abstract: The 1H(6Li, 6Be)n charge-exchange reaction and the 3H(8He,p)10He two-neutron transfer reaction were recently carried out at the ACCULINNA fragment separator (FLNR, Dubna) to populate the ground and excited states of 6Be and 10He nuclei, respectively. The ...

    Abstract The 1H(6Li, 6Be)n charge-exchange reaction and the 3H(8He,p)10He two-neutron transfer reaction were recently carried out at the ACCULINNA fragment separator (FLNR, Dubna) to populate the ground and excited states of 6Be and 10He nuclei, respectively. The 6Be ET spectrum (ET is the 6Be energy above its 4He+p+p decay threshold) was obtained with high statistics and described by the well-known 0+ ground state of 6Be at ET = 1.37 MeV, the 2+ state at ET = 3.05 MeV and a broad structure extending from 4 to 16 MeV which could be interpreted as the isovector soft dipole mode associated with the 6Li ground state. In the 10He case the 0+ ground state was found at about 2.1(2) MeV (Γ ~ 2 MeV) above the 8He+n+n breakup threshold. Angular correlations observed for 10He decay products show prominent interference patterns allowing to draw conclusions about the structure of low-energy excited states: 1-(ET ~ 5 MeV) and 2+ (ET ~ 6 MeV).
    Keywords Physics ; QC1-999 ; Science ; Q ; DOAJ:Physics (General) ; DOAJ:Physics and Astronomy
    Subject code 541
    Language English
    Publishing date 2012-12-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Structure of 10He low-lying states uncovered by correlations.

    Sidorchuk, S I / Bezbakh, A A / Chudoba, V / Egorova, I A / Fomichev, A S / Golovkov, M S / Gorshkov, A V / Gorshkov, V A / Grigorenko, L V / Jalůvková, P / Kaminski, G / Krupko, S A / Kuzmin, E A / Nikolskii, E Yu / Oganessian, Yu Ts / Parfenova, Yu L / Sharov, P G / Slepnev, R S / Stepantsov, S V /
    Ter-Akopian, G M / Wolski, R / Yukhimchuk, A A / Filchagin, S V / Kirdyashkin, A A / Maksimkin, I P / Vikhlyantsev, O P

    Physical review letters

    2012  Volume 108, Issue 20, Page(s) 202502

    Abstract: The 0+ ground state of the 10He nucleus produced in the 3H(8He,p)10He reaction was found at about 2.1±0.2  MeV (Γ∼2  MeV) above the three-body ^{8}He+n+n breakup threshold. Angular correlations observed for ^{10}He decay products show prominent ... ...

    Abstract The 0+ ground state of the 10He nucleus produced in the 3H(8He,p)10He reaction was found at about 2.1±0.2  MeV (Γ∼2  MeV) above the three-body ^{8}He+n+n breakup threshold. Angular correlations observed for ^{10}He decay products show prominent interference patterns allowing us to draw conclusions about the structure of low-energy excited states. We interpret the observed correlations as a coherent superposition of a broad 1- state having a maximum at energy 4-6 MeV and a 2+ state above 6 MeV, setting both on top of the 0+ state "tail." This anomalous level ordering indicates that the breakdown of the N=8 shell known in 12Be thus extends also to the ^{10}He system.
    Language English
    Publishing date 2012-05-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.108.202502
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Measurement of Prompt D^{0}, Λ_{c}^{+}, and Σ_{c}^{0,++}(2455) Production in Proton-Proton Collisions at sqrt[s]=13  TeV.

    Acharya, S / Adamová, D / Adler, A / Adolfsson, J / Aglieri Rinella, G / Agnello, M / Agrawal, N / Ahammed, Z / Ahmad, S / Ahn, S U / Ahuja, I / Akbar, Z / Akindinov, A / Al-Turany, M / Alam, S N / Aleksandrov, D / Alessandro, B / Alfanda, H M / Alfaro Molina, R /
    Ali, B / Ali, Y / Alici, A / Alizadehvandchali, N / Alkin, A / Alme, J / Alt, T / Altenkamper, L / Altsybeev, I / Anaam, M N / Andrei, C / Andreou, D / Andronic, A / Angeletti, M / Anguelov, V / Antinori, F / Antonioli, P / Anuj, C / Apadula, N / Aphecetche, L / Appelshäuser, H / Arcelli, S / Arnaldi, R / Arsene, I C / Arslandok, M / Augustinus, A / Averbeck, R / Aziz, S / Azmi, M D / Badalà, A / Baek, Y W / Bai, X / Bailhache, R / Bailung, Y / Bala, R / Balbino, A / Baldisseri, A / Balis, B / Ball, M / Banerjee, D / Barbera, R / Barioglio, L / Barlou, M / Barnaföldi, G G / Barnby, L S / Barret, V / Bartels, C / Barth, K / Bartsch, E / Baruffaldi, F / Bastid, N / Basu, S / Batigne, G / Batyunya, B / Bauri, D / Bazo Alba, J L / Bearden, I G / Beattie, C / Belikov, I / Bell Hechavarria, A D C / Bellini, F / Bellwied, R / Belokurova, S / Belyaev, V / Bencedi, G / Beole, S / Bercuci, A / Berdnikov, Y / Berdnikova, A / Bergmann, L / Besoiu, M G / Betev, L / Bhaduri, P P / Bhasin, A / Bhat, M A / Bhattacharjee, B / Bhattacharya, P / Bianchi, L / Bianchi, N / Bielčík, J / Bielčíková, J / Biernat, J / Bilandzic, A / Biro, G / Biswas, S / Blair, J T / Blau, D / Blidaru, M B / Blume, C / Boca, G / Bock, F / Bogdanov, A / Boi, S / Bok, J / Boldizsár, L / Bolozdynya, A / Bombara, M / Bond, P M / Bonomi, G / Borel, H / Borissov, A / Bossi, H / Botta, E / Bratrud, L / Braun-Munzinger, P / Bregant, M / Broz, M / Bruno, G E / Buckland, M D / Budnikov, D / Buesching, H / Bufalino, S / Bugnon, O / Buhler, P / Buthelezi, Z / Butt, J B / Bysiak, S A / Caffarri, D / Cai, M / Caines, H / Caliva, A / Calvo Villar, E / Camacho, J M M / Camacho, R S / Camerini, P / Canedo, F D M / Carnesecchi, F / Caron, R / Castillo Castellanos, J / Casula, E A R / Catalano, F / Ceballos Sanchez, C / Chakraborty, P / Chandra, S / Chapeland, S / Chartier, M / Chattopadhyay, S / Chauvin, A / Chavez, T G / Cheshkov, C / Cheynis, B / Chibante Barroso, V / Chinellato, D D / Cho, S / Chochula, P / Christakoglou, P / Christensen, C H / Christiansen, P / Chujo, T / Cicalo, C / Cifarelli, L / Cindolo, F / Ciupek, M R / Clai, G / Cleymans, J / Colamaria, F / Colburn, J S / Colella, D / Collu, A / Colocci, M / Concas, M / Conesa Balbastre, G / Conesa Del Valle, Z / Contin, G / Contreras, J G / Coquet, M L / Cormier, T M / Cortese, P / Cosentino, M R / Costa, F / Costanza, S / Crochet, P / Cuautle, E / Cui, P / Cunqueiro, L / Dainese, A / Damas, F P A / Danisch, M C / Danu, A / Das, I / Das, P / Das, S / Dash, S / De, S / De Caro, A / de Cataldo, G / De Cilladi, L / de Cuveland, J / De Falco, A / De Gruttola, D / De Marco, N / De Martin, C / De Pasquale, S / Deb, S / Degenhardt, H F / Deja, K R / Dello Stritto, L / Delsanto, S / Deng, W / Dhankher, P / Di Bari, D / Di Mauro, A / Diaz, R A / Dietel, T / Ding, Y / Divià, R / Dixit, D U / Djuvsland, Ø / Dmitrieva, U / Do, J / Dobrin, A / Dönigus, B / Dordic, O / Dubey, A K / Dubla, A / Dudi, S / Dukhishyam, M / Dupieux, P / Dzalaiova, N / Eder, T M / Ehlers, R J / Eikeland, V N / Eisenhut, F / Elia, D / Erazmus, B / Ercolessi, F / Erhardt, F / Erokhin, A / Ersdal, M R / Espagnon, B / Eulisse, G / Evans, D / Evdokimov, S / Fabbietti, L / Faggin, M / Faivre, J / Fan, F / Fantoni, A / Fasel, M / Fecchio, P / Feliciello, A / Feofilov, G / Fernández Téllez, A / Ferrero, A / Ferretti, A / Feuillard, V J G / Figiel, J / Filchagin, S / Finogeev, D / Fionda, F M / Fiorenza, G / Flor, F / Flores, A N / Foertsch, S / Foka, P / Fokin, S / Fragiacomo, E / Frajna, E / Fuchs, U / Funicello, N / Furget, C / Furs, A / Gaardhøje, J J / Gagliardi, M / Gago, A M / Gal, A / Galvan, C D / Ganoti, P / Garabatos, C / Garcia, J R A / Garcia-Solis, E / Garg, K / Gargiulo, C / Garibli, A / Garner, K / Gasik, P / Gauger, E F / Gautam, A / Gay Ducati, M B / Germain, M / Ghosh, P / Ghosh, S K / Giacalone, M / Gianotti, P / Giubellino, P / Giubilato, P / Glaenzer, A M C / Glässel, P / Goh, D J Q / Gonzalez, V / González-Trueba, L H / Gorbunov, S / Gorgon, M / Görlich, L / Gotovac, S / Grabski, V / Graczykowski, L K / Greiner, L / Grelli, A / Grigoras, C / Grigoriev, V / Grigoryan, A / Grigoryan, S / Groettvik, O S / Grosa, F / Grosse-Oetringhaus, J F / Grosso, R / Guardiano, G G / Guernane, R / Guilbaud, M / Gulbrandsen, K / Gunji, T / Gupta, A / Gupta, R / Guzman, S P / Gyulai, L / Habib, M K / Hadjidakis, C / Halimoglu, G / Hamagaki, H / Hamar, G / Hamid, M / Hannigan, R / Haque, M R / Harlenderova, A / Harris, J W / Harton, A / Hasenbichler, J A / Hassan, H / Hatzifotiadou, D / Hauer, P / Havener, L B / Hayashi, S / Heckel, S T / Hellbär, E / Helstrup, H / Herman, T / Hernandez, E G / Herrera Corral, G / Herrmann, F / Hetland, K F / Hillemanns, H / Hills, C / Hippolyte, B / Hofman, B / Hohlweger, B / Honermann, J / Hong, G H / Horak, D / Hornung, S / Horzyk, A / Hosokawa, R / Hristov, P / Hughes, C / Huhn, P / Humanic, T J / Hushnud, H / Husova, L A / Hutson, A / Hutter, D / Iddon, J P / Ilkaev, R / Ilyas, H / Inaba, M / Innocenti, G M / Ippolitov, M / Isakov, A / Islam, M S / Ivanov, M / Ivanov, V / Izucheev, V / Jablonski, M / Jacak, B / Jacazio, N / Jacobs, P M / Jadlovska, S / Jadlovsky, J / Jaelani, S / Jahnke, C / Jakubowska, M J / Jalotra, A / Janik, M A / Janson, T / Jercic, M / Jevons, O / Jonas, F / Jones, P G / Jowett, J M / Jung, J / Jung, M / Junique, A / Jusko, A / Kaewjai, J / Kalinak, P / Kalweit, A / Kaplin, V / Kar, S / Karasu Uysal, A / Karatovic, D / Karavichev, O / Karavicheva, T / Karczmarczyk, P / Karpechev, E / Kazantsev, A / Kebschull, U / Keidel, R / Keijdener, D L D / Keil, M / Ketzer, B / Khabanova, Z / Khan, A M / Khan, S / Khanzadeev, A / Kharlov, Y / Khatun, A / Khuntia, A / Kileng, B / Kim, B / Kim, C / Kim, D / Kim, D J / Kim, E J / Kim, J / Kim, J S / Kim, M / Kim, S / Kim, T / Kirsch, S / Kisel, I / Kiselev, S / Kisiel, A / Kitowski, J P / Klay, J L / Klein, J / Klein, S / Klein-Bösing, C / Kleiner, M / Klemenz, T / Kluge, A / Knospe, A G / Kobdaj, C / Köhler, M K / Kollegger, T / Kondratyev, A / Kondratyeva, N / Kondratyuk, E / Konig, J / Konigstorfer, S A / Konopka, P J / Kornakov, G / Koryciak, S D / Koska, L / Kotliarov, A / Kovalenko, O / Kovalenko, V / Kowalski, M / Králik, I / Kravčáková, A / Kreis, L / Krivda, M / Krizek, F / Krizkova Gajdosova, K / Kroesen, M / Krüger, M / Kryshen, E / Krzewicki, M / Kučera, V / Kuhn, C / Kuijer, P G / Kumaoka, T / Kumar, D / Kumar, L / Kumar, N / Kundu, S / Kurashvili, P / Kurepin, A / Kurepin, A B / Kuryakin, A / Kushpil, S / Kvapil, J / Kweon, M J / Kwon, J Y / Kwon, Y / La Pointe, S L / La Rocca, P / Lai, Y S / Lakrathok, A / Lamanna, M / Langoy, R / Lapidus, K / Larionov, P / Laudi, E / Lautner, L / Lavicka, R / Lazareva, T / Lea, R / Lehrbach, J / Lemmon, R C / León Monzón, I / Lesser, E D / Lettrich, M / Lévai, P / Li, X / Li, X L / Lien, J / Lietava, R / Lim, B / Lim, S H / Lindenstruth, V / Lindner, A / Lippmann, C / Liu, A / Liu, J / Lofnes, I M / Loginov, V / Loizides, C / Loncar, P / Lopez, J A / Lopez, X / López Torres, E / Luhder, J R / Lunardon, M / Luparello, G / Ma, Y G / Maevskaya, A / Mager, M / Mahmoud, T / Maire, A / Malaev, M / Malik, N M / Malik, Q W / Malinina, L / Mal'Kevich, D / Mallick, N / Malzacher, P / Mandaglio, G / Manko, V / Manso, F / Manzari, V / Mao, Y / Mareš, J / Margagliotti, G V / Margotti, A / Marín, A / Markert, C / Marquard, M / Martin, N A / Martinengo, P / Martinez, J L / Martínez, M I / Martínez García, G / Masciocchi, S / Masera, M / Masoni, A / Massacrier, L / Mastroserio, A / Mathis, A M / Matonoha, O / Matuoka, P F T / Matyja, A / Mayer, C / Mazuecos, A L / Mazzaschi, F / Mazzilli, M / Mazzoni, M A / Mdhluli, J E / Mechler, A F / Meddi, F / Melikyan, Y / Menchaca-Rocha, A / Meninno, E / Menon, A S / Meres, M / Mhlanga, S / Miake, Y / Micheletti, L / Migliorin, L C / Mihaylov, D L / Mikhaylov, K / Mishra, A N / Miśkowiec, D / Modak, A / Mohanty, A P / Mohanty, B / Mohisin Khan, M / Moravcova, Z / Mordasini, C / Moreira De Godoy, D A / Moreno, L A P / Morozov, I / Morsch, A / Mrnjavac, T / Muccifora, V / Mudnic, E / Mühlheim, D / Muhuri, S / Mulligan, J D / Mulliri, A / Munhoz, M G / Munzer, R H / Murakami, H / Murray, S / Musa, L / Musinsky, J / Myrcha, J W / Naik, B / Nair, R / Nandi, B K / Nania, R / Nappi, E / Naru, M U / Nassirpour, A F / Nath, A / Nattrass, C / Neagu, A / Nellen, L / Nesbo, S V / Neskovic, G / Nesterov, D / Nielsen, B S / Nikolaev, S / Nikulin, S / Nikulin, V / Noferini, F / Noh, S / Nomokonov, P / Norman, J / Novitzky, N / Nowakowski, P / Nyanin, A / Nystrand, J / Ogino, M / Ohlson, A / Okorokov, V A / Oleniacz, J / Oliveira Da Silva, A C / Oliver, M H / Onnerstad, A / Oppedisano, C / Ortiz Velasquez, A / Osako, T / Oskarsson, A / Otwinowski, J / Oyama, K / Pachmayer, Y / Padhan, S / Pagano, D / Paić, G / Palasciano, A / Pan, J / Panebianco, S / Pareek, P / Park, J / Parkkila, J E / Pathak, S P / Patra, R N / Paul, B / Pazzini, J / Pei, H / Peitzmann, T / Peng, X / Pereira, L G / Pereira Da Costa, H / Peresunko, D / Perez, G M / Perrin, S / Pestov, Y / Petráček, V / Petrovici, M / Pezzi, R P / Piano, S / Pikna, M / Pillot, P / Pinazza, O / Pinsky, L / Pinto, C / Pisano, S / Płoskoń, M / Planinic, M / Pliquett, F / Poghosyan, M G / Polichtchouk, B / Politano, S / Poljak, N / Pop, A / Porteboeuf-Houssais, S / Porter, J / Pozdniakov, V / Prasad, S K / Preghenella, R / Prino, F / Pruneau, C A / Pshenichnov, I / Puccio, M / Qiu, S / Quaglia, L / Quishpe, R E / Ragoni, S / Rakotozafindrabe, A / Ramello, L / Rami, F / Ramirez, S A R / Ramos, A G T / Rancien, T A / Raniwala, R / Raniwala, S / Räsänen, S S / Rath, R / Ravasenga, I / Read, K F / Redelbach, A R / Redlich, K / Rehman, A / Reichelt, P / Reidt, F / Reme-Ness, H A / Renfordt, R / Rescakova, Z / Reygers, K / Riabov, A / Riabov, V / Richert, T / Richter, M / Riegler, W / Riggi, F / Ristea, C / Rode, S P / Rodríguez Cahuantzi, M / Røed, K / Rogalev, R / Rogochaya, E / Rogoschinski, T S / Rohr, D / Röhrich, D / Rojas, P F / Rokita, P S / Ronchetti, F / Rosano, A / Rosas, E D / Rossi, A / Rotondi, A / Roy, A / Roy, P / Roy, S / Rubini, N / Rueda, O V / Rui, R / Rumyantsev, B / Russek, P G / Rustamov, A / Ryabinkin, E / Ryabov, Y / Rybicki, A / Rytkonen, H / Rzesa, W / Saarimaki, O A M / Sadek, R / Sadovsky, S / Saetre, J / Šafařík, K / Saha, S K / Saha, S / Sahoo, B / Sahoo, P / Sahoo, R / Sahoo, S / Sahu, D / Sahu, P K / Saini, J / Sakai, S / Sambyal, S / Samsonov, V / Sarkar, D / Sarkar, N / Sarma, P / Sarti, V M / Sas, M H P / Schambach, J / Scheid, H S / Schiaua, C / Schicker, R / Schmah, A / Schmidt, C / Schmidt, H R / Schmidt, M O / Schmidt, M / Schmidt, N V / Schmier, A R / Schotter, R / Schukraft, J / Schutz, Y / Schwarz, K / Schweda, K / Scioli, G / Scomparin, E / Seger, J E / Sekiguchi, Y / Sekihata, D / Selyuzhenkov, I / Senyukov, S / Seo, J J / Serebryakov, D / Šerkšnytė, L / Sevcenco, A / Shaba, T J / Shabanov, A / Shabetai, A / Shahoyan, R / Shaikh, W / Shangaraev, A / Sharma, A / Sharma, H / Sharma, M / Sharma, N / Sharma, S / Sharma, U / Sheibani, O / Shigaki, K / Shimomura, M / Shirinkin, S / Shou, Q / Sibiriak, Y / Siddhanta, S / Siemiarczuk, T / Silva, T F / Silvermyr, D / Simonetti, G / Singh, B / Singh, R / Singh, V K / Singhal, V / Sinha, T / Sitar, B / Sitta, M / Skaali, T B / Skorodumovs, G / Slupecki, M / Smirnov, N / Snellings, R J M / Soncco, C / Song, J / Songmoolnak, A / Soramel, F / Sorensen, S / Sputowska, I / Stachel, J / Stan, I / Steffanic, P J / Stiefelmaier, S F / Stocco, D / Storehaug, I / Storetvedt, M M / Stylianidis, C P / Suaide, A A P / Sugitate, T / Suire, C / Suljic, M / Sultanov, R / Šumbera, M / Sumberia, V / Sumowidagdo, S / Swain, S / Szabo, A / Szarka, I / Tabassam, U / Taghavi, S F / Taillepied, G / Takahashi, J / Tambave, G J / Tang, S / Tang, Z / Tarhini, M / Tarzila, M G / Tauro, A / Tejeda Muñoz, G / Telesca, A / Terlizzi, L / Terrevoli, C / Tersimonov, G / Thakur, S / Thomas, D / Tieulent, R / Tikhonov, A / Timmins, A R / Tkacik, M / Toia, A / Topilskaya, N / Toppi, M / Torales-Acosta, F / Tork, T / Cruz-Torres, R / Torres, S R / Trifiró, A / Tripathy, S / Tripathy, T / Trogolo, S / Trombetta, G / Trubnikov, V / Trzaska, W H / Trzcinski, T P / Trzeciak, B A / Tumkin, A / Turrisi, R / Tveter, T S / Ullaland, K / Uras, A / Urioni, M / Usai, G L / Vala, M / Valle, N / Vallero, S / van der Kolk, N / van Doremalen, L V R / van Leeuwen, M / Vande Vyvre, P / Varga, D / Varga, Z / Varga-Kofarago, M / Vargas, A / Vasileiou, M / Vasiliev, A / Vázquez Doce, O / Vechernin, V / Vercellin, E / Vergara Limón, S / Vermunt, L / Vértesi, R / Verweij, M / Vickovic, L / Vilakazi, Z / Villalobos Baillie, O / Vino, G / Vinogradov, A / Virgili, T / Vislavicius, V / Vodopyanov, A / Volkel, B / Völkl, M A / Voloshin, K / Voloshin, S A / Volpe, G / von Haller, B / Vorobyev, I / Voscek, D / Vozniuk, N / Vrláková, J / Wagner, B / Wang, C / Wang, D / Weber, M / Weelden, R J G V / Wegrzynek, A / Wenzel, S C / Wessels, J P / Wiechula, J / Wikne, J / Wilk, G / Wilkinson, J / Willems, G A / Windelband, B / Winn, M / Witt, W E / Wright, J R / Wu, W / Wu, Y / Xu, R / Yalcin, S / Yamaguchi, Y / Yamakawa, K / Yang, S / Yano, S / Yin, Z / Yokoyama, H / Yoo, I-K / Yoon, J H / Yuan, S / Yuncu, A / Zaccolo, V / Zaman, A / Zampolli, C / Zanoli, H J C / Zardoshti, N / Zarochentsev, A / Závada, P / Zaviyalov, N / Zbroszczyk, H / Zhalov, M / Zhang, S / Zhang, X / Zhang, Y / Zherebchevskii, V / Zhi, Y / Zhigareva, N / Zhou, D / Zhou, Y / Zhu, J / Zhu, Y / Zichichi, A / Zinovjev, G / Zurlo, N

    Physical review letters

    2022  Volume 128, Issue 1, Page(s) 12001

    Abstract: The p_{T}-differential production cross sections of prompt D^{0}, Λ_{c}^{+}, and Σ_{c}^{0,++}(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions at sqrt[s]=13  TeV. This is the first measurement of Σ_{c}^{0,++} production in ... ...

    Abstract The p_{T}-differential production cross sections of prompt D^{0}, Λ_{c}^{+}, and Σ_{c}^{0,++}(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions at sqrt[s]=13  TeV. This is the first measurement of Σ_{c}^{0,++} production in hadronic collisions. Assuming the same production yield for the three Σ_{c}^{0,+,++} isospin states, the baryon-to-meson cross section ratios Σ_{c}^{0,+,++}/D^{0} and Λ_{c}^{+}/D^{0} are calculated in the transverse momentum (p_{T}) intervals 2<p_{T}<12 and 1<p_{T}<24  GeV/c. Values significantly larger than in e^{+}e^{-} collisions are observed, indicating for the first time that baryon enhancement in hadronic collisions also extends to the Σ_{c}. The feed-down contribution to Λ_{c}^{+} production from Σ_{c}^{0,+,++} is also reported and is found to be larger than in e^{+}e^{-} collisions. The data are compared with predictions from event generators and other phenomenological models, providing a sensitive test of the different charm-hadronization mechanisms implemented in the models.<br />
    Language English
    Publishing date 2022-01-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.128.012001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Measurement of the Cross Sections of Ξ_{c}^{0} and Ξ_{c}^{+} Baryons and of the Branching-Fraction Ratio BR(Ξ_{c}^{0}→Ξ^{-}e^{+}ν_{e})/BR(Ξ_{c}^{0}→Ξ^{-}π^{+}) in pp Collisions at sqrt[s]=13  TeV.

    Acharya, S / Adamová, D / Adler, A / Adolfsson, J / Aglieri Rinella, G / Agnello, M / Agrawal, N / Ahammed, Z / Ahmad, S / Ahn, S U / Ahuja, I / Akbar, Z / Akindinov, A / Al-Turany, M / Alam, S N / Aleksandrov, D / Alessandro, B / Alfanda, H M / Alfaro Molina, R /
    Ali, B / Ali, Y / Alici, A / Alizadehvandchali, N / Alkin, A / Alme, J / Alt, T / Altenkamper, L / Altsybeev, I / Anaam, M N / Andrei, C / Andreou, D / Andronic, A / Angeletti, M / Anguelov, V / Antinori, F / Antonioli, P / Anuj, C / Apadula, N / Aphecetche, L / Appelshäuser, H / Arcelli, S / Arnaldi, R / Arsene, I C / Arslandok, M / Augustinus, A / Averbeck, R / Aziz, S / Azmi, M D / Badalà, A / Baek, Y W / Bai, X / Bailhache, R / Bailung, Y / Bala, R / Balbino, A / Baldisseri, A / Balis, B / Ball, M / Banerjee, D / Barbera, R / Barioglio, L / Barlou, M / Barnaföldi, G G / Barnby, L S / Barret, V / Bartels, C / Barth, K / Bartsch, E / Baruffaldi, F / Bastid, N / Basu, S / Batigne, G / Batyunya, B / Bauri, D / Bazo Alba, J L / Bearden, I G / Beattie, C / Belikov, I / Bell Hechavarria, A D C / Bellini, F / Bellwied, R / Belokurova, S / Belyaev, V / Bencedi, G / Beole, S / Bercuci, A / Berdnikov, Y / Berdnikova, A / Berenyi, D / Bergmann, L / Besoiu, M G / Betev, L / Bhaduri, P P / Bhasin, A / Bhat, I R / Bhat, M A / Bhattacharjee, B / Bhattacharya, P / Bianchi, L / Bianchi, N / Bielčík, J / Bielčíková, J / Biernat, J / Bilandzic, A / Biro, G / Biswas, S / Blair, J T / Blau, D / Blidaru, M B / Blume, C / Boca, G / Bock, F / Bogdanov, A / Boi, S / Bok, J / Boldizsár, L / Bolozdynya, A / Bombara, M / Bond, P M / Bonomi, G / Borel, H / Borissov, A / Bossi, H / Botta, E / Bratrud, L / Braun-Munzinger, P / Bregant, M / Broz, M / Bruno, G E / Buckland, M D / Budnikov, D / Buesching, H / Bufalino, S / Bugnon, O / Buhler, P / Buthelezi, Z / Butt, J B / Bysiak, S A / Caffarri, D / Cai, M / Caines, H / Caliva, A / Calvo Villar, E / Camacho, J M M / Camacho, R S / Camerini, P / Canedo, F D M / Carnesecchi, F / Caron, R / Castillo Castellanos, J / Casula, E A R / Catalano, F / Ceballos Sanchez, C / Chakraborty, P / Chandra, S / Chapeland, S / Chartier, M / Chattopadhyay, S / Chauvin, A / Chavez, T G / Cheshkov, C / Cheynis, B / Chibante Barroso, V / Chinellato, D D / Cho, S / Chochula, P / Christakoglou, P / Christensen, C H / Christiansen, P / Chujo, T / Cicalo, C / Cifarelli, L / Cindolo, F / Ciupek, M R / Clai, G / Cleymans, J / Colamaria, F / Colburn, J S / Colella, D / Collu, A / Colocci, M / Concas, M / Conesa Balbastre, G / Conesa Del Valle, Z / Contin, G / Contreras, J G / Coquet, M L / Cormier, T M / Cortese, P / Cosentino, M R / Costa, F / Costanza, S / Crochet, P / Cruz-Torres, R / Cuautle, E / Cui, P / Cunqueiro, L / Dainese, A / Damas, F P A / Danisch, M C / Danu, A / Das, I / Das, P / Das, S / Dash, S / De, S / De Caro, A / de Cataldo, G / De Cilladi, L / de Cuveland, J / De Falco, A / De Gruttola, D / De Marco, N / De Martin, C / De Pasquale, S / Deb, S / Degenhardt, H F / Deja, K R / Dello Stritto, L / Delsanto, S / Deng, W / Dhankher, P / Di Bari, D / Di Mauro, A / Diaz, R A / Dietel, T / Ding, Y / Divià, R / Dixit, D U / Djuvsland, Ø / Dmitrieva, U / Do, J / Dobrin, A / Dönigus, B / Dordic, O / Dubey, A K / Dubla, A / Dudi, S / 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    Physical review letters

    2022  Volume 127, Issue 27, Page(s) 272001

    Abstract: The p_{T}-differential cross sections of prompt charm-strange baryons Ξ_{c}^{0} and Ξ_{c}^{+} were measured at midrapidity (|y|<0.5) in proton-proton (pp) collisions at a center-of-mass energy sqrt[s]=13  TeV with the ALICE detector at the LHC. The Ξ_{c}^ ...

    Abstract The p_{T}-differential cross sections of prompt charm-strange baryons Ξ_{c}^{0} and Ξ_{c}^{+} were measured at midrapidity (|y|<0.5) in proton-proton (pp) collisions at a center-of-mass energy sqrt[s]=13  TeV with the ALICE detector at the LHC. The Ξ_{c}^{0} baryon was reconstructed via both the semileptonic decay (Ξ^{-}e^{+}ν_{e}) and the hadronic decay (Ξ^{-}π^{+}) channels. The Ξ_{c}^{+} baryon was reconstructed via the hadronic decay (Ξ^{-}π^{+}π^{+}) channel. The branching-fraction ratio BR(Ξ_{c}^{0}→Ξ^{-}e^{+}ν_{e})/BR(Ξ_{c}^{0}→Ξ^{-}π^{+})=1.38±0.14(stat)±0.22(syst) was measured with a total uncertainty reduced by a factor of about 3 with respect to the current world average reported by the Particle Data Group. The transverse momentum (p_{T}) dependence of the Ξ_{c}^{0}- and Ξ_{c}^{+}-baryon production relative to the D^{0} meson and to the Σ_{c}^{0,+,++}- and Λ_{c}^{+}-baryon production are reported. The baryon-to-meson ratio increases toward low p_{T} up to a value of approximately 0.3. The measurements are compared with various models that take different hadronization mechanisms into consideration. The results provide stringent constraints to these theoretical calculations and additional evidence that different processes are involved in charm hadronization in electron-positron (e^{+}e^{-}) and hadronic collisions.
    Language English
    Publishing date 2022-01-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.127.272001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Polarization of Λ and Λ[over ¯] Hyperons along the Beam Direction in Pb-Pb Collisions at sqrt[s]_{NN}=5.02  TeV.

    Acharya, S / Adamová, D / Adler, A / Aglieri Rinella, G / Agnello, M / Agrawal, N / Ahammed, Z / Ahmad, S / Ahn, S U / Ahuja, I / Akbar, Z / Akindinov, A / Al-Turany, M / Alam, S N / Aleksandrov, D / Alessandro, B / Alfanda, H M / Alfaro Molina, R / Ali, B /
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    Physical review letters

    2022  Volume 128, Issue 17, Page(s) 172005

    Abstract: The polarization of the Λ and Λ[over ¯] hyperons along the beam (z) direction, P_{z}, has been measured in Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV recorded with ALICE at the Large Hadron Collider (LHC). The main contribution to P_{z} comes from ... ...

    Abstract The polarization of the Λ and Λ[over ¯] hyperons along the beam (z) direction, P_{z}, has been measured in Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV recorded with ALICE at the Large Hadron Collider (LHC). The main contribution to P_{z} comes from elliptic flow-induced vorticity and can be characterized by the second Fourier sine coefficient P_{z,s2}=⟨P_{z}sin(2φ-2Ψ_{2})⟩, where φ is the hyperon azimuthal emission angle and Ψ_{2} is the elliptic flow plane angle. We report the measurement of P_{z,s2} for different collision centralities and in the 30%-50% centrality interval as a function of the hyperon transverse momentum and rapidity. The P_{z,s2} is positive similarly as measured by the STAR Collaboration in Au-Au collisions at sqrt[s_{NN}]=200  GeV, with somewhat smaller amplitude in the semicentral collisions. This is the first experimental evidence of a nonzero hyperon P_{z} in Pb-Pb collisions at the LHC. The comparison of the measured P_{z,s2} with the hydrodynamic model calculations shows sensitivity to the competing contributions from thermal and the recently found shear-induced vorticity, as well as to whether the polarization is acquired at the quark-gluon plasma or the hadronic phase.
    Language English
    Publishing date 2022-05-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.128.172005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Measurement of the Groomed Jet Radius and Momentum Splitting Fraction in pp and Pb-Pb Collisions at sqrt[s_{NN}]=5.02  TeV.

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    Physical review letters

    2022  Volume 128, Issue 10, Page(s) 102001

    Abstract: This article presents groomed jet substructure measurements in pp and Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV with the ALICE detector. The soft drop grooming algorithm provides access to the hard parton splittings inside a jet by removing soft wide- ... ...

    Abstract This article presents groomed jet substructure measurements in pp and Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV with the ALICE detector. The soft drop grooming algorithm provides access to the hard parton splittings inside a jet by removing soft wide-angle radiation. We report the groomed jet momentum splitting fraction, z_{g}, and the (scaled) groomed jet radius, θ_{g}. Charged-particle jets are reconstructed at midrapidity using the anti-k_{T} algorithm with resolution parameters R=0.2 and R=0.4. In heavy-ion collisions, the large underlying event poses a challenge for the reconstruction of groomed jet observables, since fluctuations in the background can cause groomed parton splittings to be misidentified. By using strong grooming conditions to reduce this background, we report these observables fully corrected for detector effects and background fluctuations for the first time. A narrowing of the θ_{g} distribution in Pb-Pb collisions compared to pp collisions is seen, which provides direct evidence of the modification of the angular structure of jets in the quark-gluon plasma. No significant modification of the z_{g} distribution in Pb-Pb collisions compared to pp collisions is observed. These results are compared with a variety of theoretical models of jet quenching, and provide constraints on jet energy-loss mechanisms and coherence effects in the quark-gluon plasma.
    Language English
    Publishing date 2022-03-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.128.102001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Hypertriton Production in p-Pb Collisions at sqrt[s_{NN}]=5.02  TeV.

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    Physical review letters

    2022  Volume 128, Issue 25, Page(s) 252003

    Abstract: The study of nuclei and antinuclei production has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high-energy hadronic collisions. The first measurement of the production of _{Λ}^{3}H in p-Pb collisions at ... ...

    Abstract The study of nuclei and antinuclei production has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high-energy hadronic collisions. The first measurement of the production of _{Λ}^{3}H in p-Pb collisions at sqrt[s_{NN}]=5.02  TeV is presented in this Letter. Its production yield measured in the rapidity interval -1<y<0 for the 40% highest-multiplicity p-Pb collisions is dN/dy=[6.3±1.8(stat)±1.2(syst)]×10^{-7}. The measurement is compared with the expectations of statistical hadronization and coalescence models, which describe the nucleosynthesis in hadronic collisions. These two models predict very different yields of the hypertriton in charged particle multiplicity environments relevant to small collision systems such as p-Pb, and therefore the measurement of dN/dy is crucial to distinguish between them. The precision of this measurement leads to the exclusion with a significance larger than 6.9σ of some configurations of the statistical hadronization model, thus constraining the theory behind the production of loosely bound states at hadron colliders.<br />
    Language English
    Publishing date 2022-07-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.128.252003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Elliptic Flow of Electrons from Beauty-Hadron Decays in Pb-Pb Collisions at sqrt[s_{NN}]=5.02  TeV.

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    Physical review letters

    2021  Volume 126, Issue 16, Page(s) 162001

    Abstract: The elliptic flow of electrons from beauty hadron decays at midrapidity (|y|<0.8) is measured in Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV with the ALICE detector at the LHC. The azimuthal distribution of the particles produced in the collisions can be ... ...

    Abstract The elliptic flow of electrons from beauty hadron decays at midrapidity (|y|<0.8) is measured in Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV with the ALICE detector at the LHC. The azimuthal distribution of the particles produced in the collisions can be parametrized with a Fourier expansion, in which the second harmonic coefficient represents the elliptic flow, v_{2}. The v_{2} coefficient of electrons from beauty hadron decays is measured for the first time in the transverse momentum (p_{T}) range 1.3-6  GeV/c in the centrality class 30%-50%. The measurement of electrons from beauty-hadron decays exploits their larger mean proper decay length cτ≈500  μm compared to that of charm hadrons and most of the other background sources. The v_{2} of electrons from beauty hadron decays at midrapidity is found to be positive with a significance of 3.75  σ. The results provide insights into the degree of thermalization of beauty quarks in the medium. A model assuming full thermalization of beauty quarks is strongly disfavored by the measurement at high p_{T}, but is in agreement with the results at low p_{T}. Transport models including substantial interactions of beauty quarks with an expanding strongly interacting medium describe the measurement within uncertainties.
    Language English
    Publishing date 2021-05-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.126.162001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Experimental Evidence for an Attractive p-ϕ Interaction.

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    Physical review letters

    2021  Volume 127, Issue 17, Page(s) 172301

    Abstract: This Letter presents the first experimental evidence of the attractive strong interaction between a proton and a ϕ meson. The result is obtained from two-particle correlations of combined p-ϕ⊕ p[over ¯]-ϕ pairs measured in high-multiplicity pp collisions ...

    Abstract This Letter presents the first experimental evidence of the attractive strong interaction between a proton and a ϕ meson. The result is obtained from two-particle correlations of combined p-ϕ⊕ p[over ¯]-ϕ pairs measured in high-multiplicity pp collisions at sqrt[s]=13  TeV by the ALICE Collaboration. The spin-averaged scattering length and effective range of the p-ϕ interaction are extracted from the fully corrected correlation function employing the Lednický-Lyuboshits approach. In particular, the imaginary part of the scattering length vanishes within uncertainties, indicating that inelastic processes do not play a prominent role for the p-ϕ interaction. These data demonstrate that the interaction is dominated by elastic p-ϕ scattering. Furthermore, an analysis employing phenomenological Gaussian- and Yukawa-type potentials is conducted. Under the assumption of the latter, the N-ϕ coupling constant is found to be g_{N-ϕ}=0.14±0.03(stat)±0.02(syst). This work provides valuable experimental input to accomplish a self-consistent description of the N-ϕ interaction, which is particularly relevant for the more fundamental studies on partial restoration of chiral symmetry in nuclear medium.
    Language English
    Publishing date 2021-11-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.127.172301
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Soft-Dielectron Excess in Proton-Proton Collisions at sqrt[s]=13  TeV.

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    Physical review letters

    2021  Volume 127, Issue 4, Page(s) 42302

    Abstract: A measurement of dielectron production in proton-proton (pp) collisions at sqrt[s]=13  TeV, recorded with the ALICE detector at the CERN LHC, is presented in this Letter. The data set was recorded with a reduced magnetic solenoid field. This enables the ... ...

    Abstract A measurement of dielectron production in proton-proton (pp) collisions at sqrt[s]=13  TeV, recorded with the ALICE detector at the CERN LHC, is presented in this Letter. The data set was recorded with a reduced magnetic solenoid field. This enables the investigation of a kinematic domain at low dielectron (ee) invariant mass m_{ee} and pair transverse momentum p_{T,ee} that was previously inaccessible at the LHC. The cross section for dielectron production is studied as a function of m_{ee}, p_{T,ee}, and event multiplicity dN_{ch}/dη. The expected dielectron rate from hadron decays, called hadronic cocktail, utilizes a parametrization of the measured η/π^{0} ratio in pp and proton-nucleus collisions, assuming that this ratio shows no strong dependence on collision energy at low transverse momentum. Comparison of the measured dielectron yield to the hadronic cocktail at 0.15<m_{ee}<0.6  GeV/c^{2} and for p_{T,ee}<0.4  GeV/c indicates an enhancement of soft dielectrons, reminiscent of the "anomalous" soft-photon and soft-dilepton excess in hadron-hadron collisions reported by several experiments under different experimental conditions. The enhancement factor over the hadronic cocktail amounts to 1.61±0.13(stat)±0.17(syst,data)±0.34(syst,cocktail) in the ALICE acceptance. Acceptance-corrected excess spectra in m_{ee} and p_{T,ee} are extracted and compared with calculations of dielectron production from hadronic bremsstrahlung and thermal radiation within a hadronic many-body approach.<br />
    Language English
    Publishing date 2021-08-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.127.042302
    Database MEDical Literature Analysis and Retrieval System OnLINE

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