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  1. Article ; Online: Study of Z Bosons Produced in Association with Charm in the Forward Region.

    Aaij, R / Abdelmotteleb, A S W / Beteta, C Abellán / Gallego, F J Abudinen / Ackernley, T / Adeva, B / Adinolfi, M / Afsharnia, H / Agapopoulou, C / Aidala, C A / Aiola, S / Ajaltouni, Z / Akar, S / Albrecht, J / Alessio, F / Alexander, M / Albero, A Alfonso / Aliouche, Z / Alkhazov, G /
    Cartelle, P Alvarez / Amato, S / Amey, J L / Amhis, Y / An, L / Anderlini, L / Andreianov, A / Andreotti, M / Archilli, F / Artamonov, A / Artuso, M / Arzymatov, K / Aslanides, E / Atzeni, M / Audurier, B / Bachmann, S / Bachmayer, M / Back, J J / Rodriguez, P Baladron / Balagura, V / Baldini, W / Leite, J Baptista / Barbetti, M / Barlow, R J / Barsuk, S / Barter, W / Bartolini, M / Baryshnikov, F / Basels, J M / Bashir, S / Bassi, G / Batsukh, B / Battig, A / Bay, A / Beck, A / Becker, M / Bedeschi, F / Bediaga, I / Beiter, A / Belavin, V / Belin, S / Bellee, V / Belous, K / Belov, I / Belyaev, I / Bencivenni, G / Ben-Haim, E / Berezhnoy, A / Bernet, R / Berninghoff, D / Bernstein, H C / Bertella, C / Bertolin, A / Betancourt, C / Betti, F / Bezshyiko, Ia / Bhasin, S / Bhom, J / Bian, L / Bieker, M S / Bifani, S / Billoir, P / Birch, M / Bishop, F C R / Bitadze, A / Bizzeti, A / Bjørn, M / Blago, M P / Blake, T / Blanc, F / Blusk, S / Bobulska, D / Boelhauve, J A / Garcia, O Boente / Boettcher, T / Boldyrev, A / Bondar, A / Bondar, N / Borghi, S / Borisyak, M / Borsato, M / Borsuk, J T / Bouchiba, S A / Bowcock, T J V / Boyer, A / Bozzi, C / Bradley, M J / Braun, S / Rodriguez, A Brea / Brodzicka, J / Gonzalo, A Brossa / Brundu, D / Buonaura, A / Buonincontri, L / Burke, A T / Burr, C / Bursche, A / Butkevich, A / Butter, J S / Buytaert, J / Byczynski, W / Cadeddu, S / Cai, H / Calabrese, R / Calefice, L / Diaz, L Calero / Cali, S / Calladine, R / Calvi, M / Gomez, M Calvo / Magalhaes, P Camargo / Campana, P / Quezada, A F Campoverde / Capelli, S / Capriotti, L / Carbone, A / Carboni, G / Cardinale, R / Cardini, A / Carli, I / Carniti, P / Carus, L / Akiba, K Carvalho / Vidal, A Casais / Casse, G / Cattaneo, M / Cavallero, G / Celani, S / Cerasoli, J / Cervenkov, D / Chadwick, A J / Chapman, M G / Charles, M / Charpentier, Ph / Chatzikonstantinidis, G / Barajas, C A Chavez / Chefdeville, M / Chen, C / Chen, S / Chernov, A / Chobanova, V / Cholak, S / Chrzaszcz, M / Chubykin, A / Chulikov, V / Ciambrone, P / Cicala, M F / Vidal, X Cid / Ciezarek, G / Clarke, P E L / Clemencic, M / Cliff, H V / Closier, J / Cobbledick, J L / Coco, V / Coelho, J A B / Cogan, J / Cogneras, E / Cojocariu, L / Collins, P / Colombo, T / Congedo, L / Contu, A / Cooke, N / Coombs, G / Corredoira, I / Corti, G / Sobral, C M Costa / Couturier, B / Craik, D C / Crkovská, J / Torres, M Cruz / Currie, R / Da Silva, C L / Dadabaev, S / Dai, L / Dall'Occo, E / Dalseno, J / D'Ambrosio, C / Danilina, A / d'Argent, P / Davies, J E / Davis, A / Francisco, O De Aguiar / De Bruyn, K / De Capua, S / De Cian, M / De Miranda, J M / De Paula, L / De Serio, M / De Simone, D / De Simone, P / De Vellis, F / de Vries, J A / Dean, C T / Debernardis, F / Decamp, D / Dedu, V / Del Buono, L / Delaney, B / Dembinski, H-P / Dendek, A / Denysenko, V / Derkach, D / Deschamps, O / Desse, F / Dettori, F / Dey, B / Di Cicco, A / Di Nezza, P / Didenko, S / Maronas, L Dieste / Dijkstra, H / Dobishuk, V / Dong, C / Donohoe, A M / Dordei, F / Dos Reis, A C / Douglas, L / Dovbnya, A / Downes, A G / Dudek, M W / Dufour, L / Duk, V / Durante, P / Durham, J M / Dutta, D / Dziurda, A / Dzyuba, A / Easo, S / Egede, U / Egorychev, V / Eidelman, S / Eisenhardt, S / Ek-In, S / Eklund, L / Ely, S / Ene, A / Epple, E / Escher, S / Eschle, J / Esen, S / Evans, T / Falabella, A / Fan, J / Fan, Y / Fang, B / Farry, S / Fazzini, D / Féo, M / Prieto, A Fernandez / Fernez, A D / Ferrari, F / Lopes, L Ferreira / Rodrigues, F Ferreira / Sole, S Ferreres / Ferrillo, M / Ferro-Luzzi, M / Filippov, S / Fini, R A / Fiorini, M / Firlej, M / Fischer, K M / Fitzgerald, D S / Fitzpatrick, C / Fiutowski, T / Fkiaras, A / Fleuret, F / Fontana, M / Fontanelli, F / Forty, R / Foulds-Holt, D / Lima, V Franco / Sevilla, M Franco / Frank, M / Franzoso, E / Frau, G / Frei, C / Friday, D A / Fu, J / Fuehring, Q / Gabriel, E / Galati, G / Torreira, A Gallas / Galli, D / Gambetta, S / Gan, Y / Gandelman, M / Gandini, P / Gao, Y / Garau, M / Martin, L M Garcia / Moreno, P Garcia / Pardiñas, J García / Plana, B Garcia / Rosales, F A Garcia / Garrido, L / Gaspar, C / Geertsema, R E / Gerick, D / Gerken, L L / Gersabeck, E / Gersabeck, M / Gershon, T / Gerstel, D / Giambastiani, L / Gibson, V / Giemza, H K / Gilman, A L / Giovannetti, M / Gioventù, A / Gironell, P Gironella / Giubega, L / Giugliano, C / Gizdov, K / Gkougkousis, E L / Gligorov, V V / Göbel, C / Golobardes, E / Golubkov, D / Golutvin, A / Gomes, A / Fernandez, S Gomez / Abrantes, F Goncalves / Goncerz, M / Gong, G / Gorbounov, P / Gorelov, I V / Gotti, C / Govorkova, E / Grabowski, J P / Grammatico, T / Cardoso, L A Granado / Graugés, E / Graverini, E / Graziani, G / Grecu, A / Greeven, L M / Grieser, N A / Grillo, L / Gromov, S / Cazon, B R Gruberg / Gu, C / Guarise, M / Guittiere, M / Günther, P A / Gushchin, E / Guth, A / Guz, Y / Gys, T / Hadavizadeh, T / Haefeli, G / Haen, C / Haimberger, J / Halewood-Leagas, T / Hamilton, P M / Hammerich, J P / Han, Q / Han, X / Hancock, T H / Hansen, E B / Hansmann-Menzemer, S / Harnew, N / Harrison, T / Hasse, C / Hatch, M / He, J / Hecker, M / Heijhoff, K / Heinicke, K / Hennequin, A M / Hennessy, K / Henry, L / Heuel, J / Hicheur, A / Hill, D / Hilton, M / Hollitt, S E / Hou, R / Hou, Y / Hu, J / Hu, W / Hu, X / Huang, W / Huang, X / Hulsbergen, W / Hunter, R J / Hushchyn, M / Hutchcroft, D / Hynds, D / Ibis, P / Idzik, M / Ilin, D / Ilten, P / Inglessi, A / Ishteev, A / Ivshin, K / Jacobsson, R / Jage, H / Jakobsen, S / Jans, E / Jashal, B K / Jawahery, A / Jevtic, V / Jiang, F / John, M / Johnson, D / Jones, C R / Jones, T P / Jost, B / Jurik, N / Kadavath, S H Kalavan / Kandybei, S / Kang, Y / Karacson, M / Karpov, M / Keizer, F / Keller, D M / Kenzie, M / Ketel, T / Khanji, B / Kharisova, A / Kholodenko, S / Kirn, T / Kirsebom, V S / Kitouni, O / Klaver, S / Kleijne, N / Klimaszewski, K / Kmiec, M R / Koliiev, S / Kondybayeva, A / Konoplyannikov, A / Kopciewicz, P / Kopecna, R / Koppenburg, P / Korolev, M / Kostiuk, I / Kot, O / Kotriakhova, S / Kravchenko, P / Kravchuk, L / Krawczyk, R D / Kreps, M / Kress, F / Kretzschmar, S / Krokovny, P / Krupa, W / Krzemien, W / Kucharczyk, M / Kudryavtsev, V / Kuindersma, H S / Kunde, G J / Kvaratskheliya, T / Lacarrere, D / Lafferty, G / Lai, A / Lampis, A / Lancierini, D / Lane, J J / Lane, R / Lanfranchi, G / Langenbruch, C / Langer, J / Lantwin, O / Latham, T / Lazzari, F / Le Gac, R / Lee, S H / Lefèvre, R / Leflat, A / Legotin, S / Leroy, O / Lesiak, T / Leverington, B / Li, H / Li, P / Li, S / Li, Y / Li, Z / Liang, X / Lin, T / Lindner, R / Lisovskyi, V / Litvinov, R / Liu, G / Liu, H / Liu, Q / Liu, S / Salvia, A Lobo / Loi, A / Castro, J Lomba / Longstaff, I / Lopes, J H / Solino, S Lopez / Lovell, G H / Lu, Y / Lucarelli, C / Lucchesi, D / Luchuk, S / Martinez, M Lucio / Lukashenko, V / Luo, Y / Lupato, A / Luppi, E / Lupton, O / Lusiani, A / Lyu, X / Ma, L / Ma, R / Maccolini, S / Machefert, F / Maciuc, F / Macko, V / Mackowiak, P / Maddrell-Mander, S / Madejczyk, O / Mohan, L R Madhan / Maev, O / Maevskiy, A / Maisuzenko, D / Majewski, M W / Malczewski, J J / Malde, S / Malecki, B / Malinin, A / Maltsev, T / Malygina, H / Manca, G / Mancinelli, G / Manuzzi, D / Marangotto, D / Maratas, J / Marchand, J F / Marconi, U / Mariani, S / Benito, C Marin / Marinangeli, M / Marks, J / Marshall, A M / Marshall, P J / Martelli, G / Martellotti, G / Martinazzoli, L / Martinelli, M / Santos, D Martinez / Vidal, F Martinez / Massafferri, A / Materok, M / Matev, R / Mathad, A / Matiunin, V / Matteuzzi, C / Mattioli, K R / Mauri, A / Maurice, E / Mauricio, J / Mazurek, M / McCann, M / Mcconnell, L / Mcgrath, T H / Mchugh, N T / McNab, A / McNulty, R / Mead, J V / Meadows, B / Meier, G / Meinert, N / Melnychuk, D / Meloni, S / Merk, M / Merli, A / Garcia, L Meyer / Mikhasenko, M / Milanes, D A / Millard, E / Milovanovic, M / Minard, M-N / Minotti, A / Minzoni, L / Mitchell, S E / Mitreska, B / Mitzel, D S / Mödden, A / Mohammed, R A / Moise, R D / Mokhnenko, S / Mombächer, T / Monroy, I A / Monteil, S / Morandin, M / Morello, G / Morello, M J / Moron, J / Morris, A B / Morris, A G / Mountain, R / Mu, H / Muheim, F / Mulder, M / Müller, D / Müller, K / Murphy, C H / Murray, D / Muzzetto, P / Naik, P / Nakada, T / Nandakumar, R / Nanut, T / Nasteva, I / Needham, M / Neri, I / Neri, N / Neubert, S / Neufeld, N / Newcombe, R / Niel, E M / Nieswand, S / Nikitin, N / Nolte, N S / Normand, C / Nunez, C / Oblakowska-Mucha, A / Obraztsov, V / Oeser, T / O'Hanlon, D P / Okamura, S / Oldeman, R / Oliva, F / Olivares, M E / Onderwater, C J G / O'Neil, R H / Goicochea, J M Otalora / Ovsiannikova, T / Owen, P / Oyanguren, A / Padeken, K O / Pagare, B / Pais, P R / Pajero, T / Palano, A / Palutan, M / Pan, Y / Panshin, G / Papanestis, A / Pappagallo, M / Pappalardo, L L / Pappenheimer, C / Parker, W / Parkes, C / Passalacqua, B / Passaleva, G / Pastore, A / Patel, M / Patrignani, C / Pawley, C J / Pearce, A / Pellegrino, A / Altarelli, M Pepe / Perazzini, S / Pereima, D / Castro, A Pereiro / Perret, P / Petric, M / Petridis, K / Petrolini, A / Petrov, A / Petrucci, S / Petruzzo, M / Pham, T T H / Philippov, A / Pica, L / Piccini, M / Pietrzyk, B / Pietrzyk, G / Pili, M / Pinci, D / Pisani, F / Pizzichemi, M / K, Resmi P / Placinta, V / Plews, J / Casasus, M Plo / Polci, F / Lener, M Poli / Poliakova, M / Poluektov, A / Polukhina, N / Polyakov, I / Polycarpo, E / Ponce, S / Popov, D / Popov, S / Poslavskii, S / Prasanth, K / Promberger, L / Prouve, C / Pugatch, V / Puill, V / Pullen, H / Punzi, G / Qi, H / Qian, W / Qin, J / Qin, N / Quagliani, R / Quintana, B / Raab, N V / Trejo, R I Rabadan / Rachwal, B / Rademacker, J H / Rama, M / Pernas, M Ramos / Rangel, M S / Ratnikov, F / Raven, G / Reboud, M / Redi, F / Reiss, F / Alepuz, C Remon / Ren, Z / Renaudin, V / Ribatti, R / Ricciardi, S / Rinnert, K / Robbe, P / Robertson, G / Rodrigues, A B / Rodrigues, E / Lopez, J A Rodriguez / Rodriguez, E R R Rodriguez / Rollings, A / Roloff, P / Romanovskiy, V / Lamas, M Romero / Vidal, A Romero / Roth, J D / Rotondo, M / Rudolph, M S / Ruf, T / Fernandez, R A Ruiz / Vidal, J Ruiz / Ryzhikov, A / Ryzka, J / Silva, J J Saborido / Sagidova, N / Sahoo, N / Saitta, B / Salomoni, M / Gras, C Sanchez / Santacesaria, R / Rios, C Santamarina / Santimaria, M / Santovetti, E / Saranin, D / Sarpis, G / Sarpis, M / Sarti, A / Satriano, C / Satta, A / Saur, M / Savrina, D / Sazak, H / Smead, L G Scantlebury / Scarabotto, A / Schael, S / Scherl, S / Schiller, M / Schindler, H / Schmelling, M / Schmidt, B / Schmitt, S / Schneider, O / Schopper, A / Schubiger, M / Schulte, S / Schune, M H / Schwemmer, R / Sciascia, B / Sellam, S / Semennikov, A / Soares, M Senghi / Sergi, A / Serra, N / Sestini, L / Seuthe, A / Shang, Y / Shangase, D M / Shapkin, M / Shchemerov, I / Shchutska, L / Shears, T / Shekhtman, L / Shen, Z / Shevchenko, V / Shields, E B / Shimizu, Y / Shmanin, E / Shupperd, J D / Siddi, B G / Coutinho, R Silva / Simi, G / Simone, S / Skidmore, N / Skwarnicki, T / Slater, M W / Slazyk, I / Smallwood, J C / Smeaton, J G / Smetkina, A / Smith, E / Smith, M / Snoch, A / Soares, M / Lavra, L Soares / Sokoloff, M D / Soler, F J P / Solovev, A / Solovyev, I / De Almeida, F L Souza / De Paula, B Souza / Spaan, B / Norella, E Spadaro / Spradlin, P / Stagni, F / Stahl, M / Stahl, S / Stanislaus, S / Steinkamp, O / Stenyakin, O / Stevens, H / Stone, S / Straticiuc, M / Strekalina, D / Suljik, F / Sun, J / Sun, L / Sun, Y / Svihra, P / Swallow, P N / Swientek, K / Szabelski, A / Szumlak, T / Szymanski, M / Taneja, S / Tanner, A R / Tat, M D / Terentev, A / Teubert, F / Thomas, E / Thompson, D J D / Thomson, K A / Tisserand, V / T'Jampens, S / Tobin, M / Tomassetti, L / Tong, X / Machado, D Torres / Tou, D Y / Trifonova, E / Trippl, C / Tuci, G / Tully, A / Tuning, N / Ukleja, A / Unverzagt, D J / Ursov, E / Usachov, A / Ustyuzhanin, A / Uwer, U / Vagner, A / Vagnoni, V / Valassi, A / Valenti, G / Canudas, N Valls / van Beuzekom, M / Van Dijk, M / Van Hecke, H / van Herwijnen, E / Van Hulse, C B / van Veghel, M / Gomez, R Vazquez / Regueiro, P Vazquez / Sierra, C Vázquez / Vecchi, S / Velthuis, J J / Veltri, M / Venkateswaran, A / Veronesi, M / Vesterinen, M / Vieira, D / Diaz, M Vieites / Viemann, H / Vilasis-Cardona, X / Figueras, E Vilella / Villa, A / Vincent, P / Volle, F C / Bruch, D Vom / Vorobyev, A / Vorobyev, V / Voropaev, N / Vos, K / Waldi, R / Walsh, J / Wang, C / Wang, J / Wang, M / Wang, R / Wang, Y / Wang, Z / Ward, J A / Watson, N K / Weber, S G / Websdale, D / Weisser, C / Westhenry, B D C / White, D J / Whitehead, M / Wiederhold, A R / Wiedner, D / Wilkinson, G / Wilkinson, M / Williams, I / Williams, M / Williams, M R J / Wilson, F F / Wislicki, W / Witek, M / Witola, L / Wormser, G / Wotton, S A / Wu, H / Wyllie, K / Xiang, Z / Xiao, D / Xie, Y / Xu, A / Xu, J / Xu, L / Xu, M / Xu, Q / Xu, Z / Yang, D / Yang, S / Yang, Y / Yang, Z / Yao, Y / Yeomans, L E / Yin, H / Yu, J / Yuan, X / Yushchenko, O / Zaffaroni, E / Zavertyaev, M / Zdybal, M / Zenaiev, O / Zeng, M / Zhang, D / Zhang, L / Zhang, S / Zhang, Y / Zharkova, A / Zhelezov, A / Zheng, Y / Zhou, T / Zhou, X / Zhou, Y / Zhovkovska, V / Zhu, X / Zhu, Z / Zhukov, V / Zonneveld, J B / Zou, Q / Zucchelli, S / Zuliani, D / Zunica, G

    Physical review letters

    2022  Volume 128, Issue 8, Page(s) 82001

    Abstract: Events containing a Z boson and a charm jet are studied for the first time in the forward region of proton-proton collisions. The data sample used corresponds to an integrated luminosity of 6  fb^{-1} collected at a center-of-mass energy of 13 TeV with ... ...

    Abstract Events containing a Z boson and a charm jet are studied for the first time in the forward region of proton-proton collisions. The data sample used corresponds to an integrated luminosity of 6  fb^{-1} collected at a center-of-mass energy of 13 TeV with the LHCb detector. In events with a Z boson and a jet, the fraction of charm jets is determined in intervals of Z-boson rapidity in the range 2.0<y(Z)<4.5. A sizable enhancement is observed in the forwardmost y(Z) interval, which could be indicative of a valencelike intrinsic-charm component in the proton wave function.<br />
    Language English
    Publishing date 2022-03-11
    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.128.082001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Observation of the Decay Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ}.

    Aaij, R / Abdelmotteleb, A S W / Beteta, C Abellán / Abudinén, F / Ackernley, T / Adeva, B / Adinolfi, M / Afsharnia, H / Agapopoulou, C / Aidala, C A / Aiola, S / Ajaltouni, Z / Akar, S / Albrecht, J / Alessio, F / Alexander, M / Albero, A Alfonso / Aliouche, Z / Alkhazov, G /
    Cartelle, P Alvarez / Amato, S / Amey, J L / Amhis, Y / An, L / Anderlini, L / Andersson, M / Andreianov, A / Andreotti, M / Archilli, F / Artamonov, A / Artuso, M / Arzymatov, K / Aslanides, E / Atzeni, M / Audurier, B / Bachmann, S / Bachmayer, M / Back, J J / Rodriguez, P Baladron / Balagura, V / Baldini, W / Baptista de Souza Leite, J / Barbetti, M / Barlow, R J / Barsuk, S / Barter, W / Bartolini, M / Baryshnikov, F / Basels, J M / Bashir, S / Bassi, G / Batsukh, B / Battig, A / Bay, A / Beck, A / Becker, M / Bedeschi, F / Bediaga, I / Beiter, A / Belavin, V / Belin, S / Bellee, V / Belous, K / Belov, I / Belyaev, I / Bencivenni, G / Ben-Haim, E / Berezhnoy, A / Bernet, R / Berninghoff, D / Bernstein, H C / Bertella, C / Bertolin, A / Betancourt, C / Betti, F / Bezshyiko, Ia / Bhasin, S / Bhom, J / Bian, L / Bieker, M S / Biesuz, N V / Bifani, S / Billoir, P / Biolchini, A / Birch, M / Bishop, F C R / Bitadze, A / Bizzeti, A / Bjørn, M / Blago, M P / Blake, T / Blanc, F / Blusk, S / Bobulska, D / Boelhauve, J A / Garcia, O Boente / Boettcher, T / Boldyrev, A / Bondar, A / Bondar, N / Borghi, S / Borisyak, M / Borsato, M / Borsuk, J T / Bouchiba, S A / Bowcock, T J V / Boyer, A / Bozzi, C / Bradley, M J / Braun, S / Rodriguez, A Brea / Brodzicka, J / Gonzalo, A Brossa / Brundu, D / Buonaura, A / Buonincontri, L / Burke, A T / Burr, C / Bursche, A / Butkevich, A / Butter, J S / Buytaert, J / Byczynski, W / Cadeddu, S / Cai, H / Calabrese, R / Calefice, L / Cali, S / Calladine, R / Calvi, M / Gomez, M Calvo / Magalhaes, P Camargo / Campana, P / Quezada, A F Campoverde / Capelli, S / Capriotti, L / Carbone, A / Carboni, G / Cardinale, R / Cardini, A / Carli, I / Carniti, P / Carus, L / Akiba, K Carvalho / Vidal, A Casais / Caspary, R / Casse, G / Cattaneo, M / Cavallero, G / Celani, S / Cerasoli, J / Cervenkov, D / Chadwick, A J / Chapman, M G / Charles, M / Charpentier, Ph / Barajas, C A Chavez / Chefdeville, M / Chen, C / Chen, S / Chernov, A / Chobanova, V / Cholak, S / Chrzaszcz, M / Chubykin, A / Chulikov, V / Ciambrone, P / Cicala, M F / Vidal, X Cid / Ciezarek, G / Clarke, P E L / Clemencic, M / Cliff, H V / Closier, J / Cobbledick, J L / Coco, V / Coelho, J A B / Cogan, J / Cogneras, E / Cojocariu, L / Collins, P / Colombo, T / Congedo, L / Contu, A / Cooke, N / Coombs, G / Corredoira, I / Corti, G / Sobral, C M Costa / Couturier, B / Craik, D C / Crkovská, J / Torres, M Cruz / Currie, R / Da Silva, C L / Dadabaev, S / Dai, L / Dall'Occo, E / Dalseno, J / D'Ambrosio, C / Danilina, A / d'Argent, P / Dashkina, A / Davies, J E / Davis, A / Francisco, O De Aguiar / De Bruyn, K / De Capua, S / De Cian, M / Da Graca, U De Freitas Carneiro / De Lucia, E / De Miranda, J M / De Paula, L / De Serio, M / De Simone, D / De Simone, P / De Vellis, F / de Vries, J A / Dean, C T / Debernardis, F / Decamp, D / Dedu, V / Del Buono, L / Delaney, B / Dembinski, H-P / Denysenko, V / Derkach, D / Deschamps, O / Dettori, F / Dey, B / Di Cicco, A / Di Nezza, P / Didenko, S / Maronas, L Dieste / Dijkstra, H / Dobishuk, V / Dong, C / Donohoe, A M / Dordei, F / Dos Reis, A C / Douglas, L / Dovbnya, A / Downes, A G / Dudek, M W / Dufour, L / Duk, V / Durante, P / Durham, J M / Dutta, D / Dziurda, A / Dzyuba, A / Easo, S / Egede, U / Egorychev, V / Eidelman, S / Eisenhardt, S / Ek-In, S / Eklund, L / Ely, S / Ene, A / Epple, E / Escher, S / Eschle, J / Esen, S / Evans, T / Falcao, L N / Fan, Y / Fang, B / Farry, S / Fazzini, D / Féo, M / Prieto, A Fernandez / Fernez, A D / Ferrari, F / Lopes, L Ferreira / Rodrigues, F Ferreira / Sole, S Ferreres / Ferrillo, M / Ferro-Luzzi, M / Filippov, S / Fini, R A / Fiorini, M / Firlej, M / Fischer, K M / Fitzgerald, D S / Fitzpatrick, C / Fiutowski, T / Fkiaras, A / Fleuret, F / Fontana, M / Fontanelli, F / Forty, R / Foulds-Holt, D / Lima, V Franco / Sevilla, M Franco / Frank, M / Franzoso, E / Frau, G / Frei, C / Friday, D A / Fu, J / Fuehring, Q / Gabriel, E / Galati, G / Torreira, A Gallas / 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    Physical review letters

    2022  Volume 128, Issue 19, Page(s) 191803

    Abstract: The first observation of the semileptonic b-baryon decay Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ}, with a significance of 6.1σ, is reported using a data sample corresponding to 3  fb^{-1} of integrated luminosity, collected by the LHCb experiment at center- ... ...

    Abstract The first observation of the semileptonic b-baryon decay Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ}, with a significance of 6.1σ, is reported using a data sample corresponding to 3  fb^{-1} of integrated luminosity, collected by the LHCb experiment at center-of-mass energies of 7 and 8 TeV at the LHC. The τ^{-} lepton is reconstructed in the hadronic decay to three charged pions. The ratio K=B(Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ})/B(Λ_{b}^{0}→Λ_{c}^{+}π^{-}π^{+}π^{-}) is measured to be 2.46±0.27±0.40, where the first uncertainty is statistical and the second systematic. The branching fraction B(Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ})=(1.50±0.16±0.25±0.23)% is obtained, where the third uncertainty is from the external branching fraction of the normalization channel Λ_{b}^{0}→Λ_{c}^{+}π^{-}π^{+}π^{-}. The ratio of semileptonic branching fractions R(Λ_{c}^{+})≡B(Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ})/B(Λ_{b}^{0}→Λ_{c}^{+}μ^{-}ν[over ¯]_{μ}) is derived to be 0.242±0.026±0.040±0.059, where the external branching fraction uncertainty from the channel Λ_{b}^{0}→Λ_{c}^{+}μ^{-}ν[over ¯]_{μ} contributes to the last term. This result is in agreement with the standard model prediction.
    Language English
    Publishing date 2022-03-11
    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.128.191803
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Book ; Online: Search for $B_c^+\to\pi^+\mu^+\mu^-$ decays and measurement of the branching fraction ratio ${\cal B}(B_c^+\to\psi(2S)\pi^+)/{\cal B}(B_c^+\to J/\psi \pi^+)$

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    2023  

    Abstract: The first search for nonresonant $B_c^+\to\pi^+\mu^+\mu^-$ decays is reported. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. No evidence ... ...

    Abstract The first search for nonresonant $B_c^+\to\pi^+\mu^+\mu^-$ decays is reported. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. No evidence for an excess of signal events over background is observed and an upper limit is set on the branching fraction ratio ${\cal B}(B_c^+\to\pi^+\mu^+\mu^-)/{\cal B}(B_c^+\to J/\psi \pi^+) < 2.1\times 10^{-4}$ at $90\%$ confidence level. Additionally, an updated measurement of the ratio of the $B_c^+\to\psi(2S)\pi^+$ and $B_c^+\to J/\psi \pi^+$ branching fractions is reported. The ratio ${\cal B}(B_c^+\to\psi(2S)\pi^+)/{\cal B}(B_c^+\to J/\psi \pi^+)$ is measured to be $0.254\pm 0.018 \pm 0.003 \pm 0.005$, where the first uncertainty is statistical, the second systematic, and the third is due to the uncertainties on the branching fractions of the leptonic $J/\psi$ and $\psi(2S)$ decays. This measurement is the most precise to date and is consistent with previous LHCb results.

    Comment: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-037.html (LHCb public pages)
    Keywords High Energy Physics - Experiment
    Subject code 612
    Publishing date 2023-12-19
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Angular Analysis of the B^{+}→K^{*+}μ^{+}μ^{-} Decay.

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    Physical review letters

    2021  Volume 126, Issue 16, Page(s) 161802

    Abstract: We present an angular analysis of the B^{+}→K^{*+}(→K_{S}^{0}π^{+})μ^{+}μ^{-} decay using 9  fb^{-1} of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of ... ...

    Abstract We present an angular analysis of the B^{+}→K^{*+}(→K_{S}^{0}π^{+})μ^{+}μ^{-} decay using 9  fb^{-1} of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B^{0}→K^{*0}μ^{+}μ^{-} decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.
    Language English
    Publishing date 2021-05-07
    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.126.161802
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Observation of the Mass Difference between Neutral Charm-Meson Eigenstates.

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    Physical review letters

    2021  Volume 127, Issue 11, Page(s) 111801

    Abstract: A measurement of mixing and CP violation in neutral charm mesons is performed using data reconstructed in proton-proton collisions collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of 5.4  fb^{-1}. A total of ... ...

    Abstract A measurement of mixing and CP violation in neutral charm mesons is performed using data reconstructed in proton-proton collisions collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of 5.4  fb^{-1}. A total of 30.6 million D^{0}→K_{S}^{0}π^{+}π^{-} decays are analyzed using a method optimized for the measurement of the mass difference between neutral charm-meson eigenstates. Allowing for CP violation in mixing and in the interference between mixing and decay, the mass and decay-width differences are measured to be x_{CP}=[3.97±0.46(stat)±0.29(syst)]×10^{-3} and y_{CP}=[4.59±1.20(stat)±0.85(syst)]×10^{-3}, respectively. The CP-violating parameters are measured as Δx=[-0.27±0.18(stat)±0.01(syst)]×10^{-3} and Δy=[0.20±0.36(stat)±0.13(syst)]×10^{-3}. This is the first observation of a nonzero mass difference in the D^{0} meson system, with a significance exceeding seven standard deviations. The data are consistent with CP symmetry and improve existing constraints on the associated parameters.
    Language English
    Publishing date 2021-10-06
    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.127.111801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Book ; Online: Precise measurement of the $f_s/f_d$ ratio of fragmentation fractions and of $B^0_s$ decay branching fractions

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    2021  

    Abstract: The ratio of the $B^0_s$ and $B^0$ fragmentation fractions, $f_s/f_d$, in proton-proton collisions at the LHC, is obtained as a function of $B$-meson transverse momentum and collision centre-of-mass energy from the combined analysis of different $B$- ... ...

    Abstract The ratio of the $B^0_s$ and $B^0$ fragmentation fractions, $f_s/f_d$, in proton-proton collisions at the LHC, is obtained as a function of $B$-meson transverse momentum and collision centre-of-mass energy from the combined analysis of different $B$-decay channels measured by the LHCb experiment. The results are described by a linear function of the meson transverse momentum, or with a function inspired by Tsallis statistics. Precise measurements of the branching fractions of the $B^0_s \to J/\psi \phi$ and $B^0_s \to D^-_s \pi^+$ decays are performed, reducing their uncertainty by about a factor of two with respect to previous world averages. Numerous $B^0_s$ decay branching fractions, measured at the LHCb experiment, are also updated using the new values of $f_s/f_d$ and branching fractions of normalisation channels. These results reduce a major source of systematic uncertainty in several searches for new physics performed through measurements of $B^0_s$ branching fractions.

    Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-046.html (LHCb public pages)
    Keywords High Energy Physics - Experiment
    Subject code 612
    Publishing date 2021-03-11
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Book ; Online: Study of $B^0_s \rightarrow J/\psi\pi^+\pi^-K^+K^-$ decays

    LHCb collaboration / Aaij, R. / Beteta, C. Abellán / Ackernley, T. / Adeva, B. / Adinolfi, M. / Afsharnia, H. / Aidala, C. A. / Aiola, S. / Ajaltouni, Z. / Akar, S. / Albrecht, J. / Alessio, F. / Alexander, M. / Albero, A. Alfonso / Aliouche, Z. / Alkhazov, G. / Cartelle, P. Alvarez / Amato, S. /
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    2020  

    Abstract: The decays $B^0_s \rightarrow J/\psi \pi^+\pi^- K^+ K^-$ are studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13TeV. The ... ...

    Abstract The decays $B^0_s \rightarrow J/\psi \pi^+\pi^- K^+ K^-$ are studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13TeV. The decays $B^0_s \rightarrow J/\psi K^{\ast0} \bar{K}^{\ast0}$ and $B^0_s \rightarrow \chi_{c1}(3872)K^+K^-$, where the $K^+K^-$ pair does not originate from a $\phi$ meson, are observed for the first time. Precise measurements of the ratios of branching fractions between intermediate $\chi_{c1}(3872)\phi$, $J/\psi K^{\ast0}\bar{K}^{\ast0}$, $\psi(2S)\phi$ and $\chi_{c1}(3872)K^+K^-$ states are reported. A structure, denoted as $X(4740)$, is observed in the $J/\psi\phi$ mass spectrum and, assuming a Breit-Wigner parameterisation, its mass and width are determined to be \begin{eqnarray*} m_{X(4740)} & = & 4741 \pm 6 \pm 6\,{\mathrm{MeV}}/c^2 \,, \\ \Gamma_{X(4740)} & = & 53 \pm 15 \pm 11\,{\mathrm{MeV}} \,, \end{eqnarray*} where the first uncertainty is statistical and the second is systematic. In addition, the most precise single measurement of the mass of the $B^0_s$ meson is performed and gives a value of $$ m_{B^0_s} = 5366.98 \pm 0.07 \pm 0.13\,{\mathrm{MeV}}/c^2\,. $$

    Comment: 32 pages, 10 figures; All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-035.html (LHCb public pages)"
    Keywords High Energy Physics - Experiment
    Subject code 612 ; 539
    Publishing date 2020-11-03
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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