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  1. AU="Prieto, A. Fernández"
  2. AU=Arnaout Omar AU=Arnaout Omar
  3. AU="Holden, Joseph M."
  4. AU="Balcells, Ll"
  5. AU="Ho, Raymond W"
  6. AU="Richardson, Marcy"
  7. AU="Stephanie Fischinger"
  8. AU="Wilkinson, Michelle J"

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  1. Buch ; Online: A FPGA-based architecture for real-time cluster finding in the LHCb silicon pixel detector

    Bassi, G. / Giambastiani, L. / Hennessy, K. / Lazzari, F. / Morello, M. J. / Pajero, T. / Prieto, A. Fernandez / Punzi, G.

    2023  

    Abstract: This article describes a custom VHDL firmware implementation of a two-dimensional cluster-finder architecture for reconstructing hit positions in the new vertex pixel detector (VELO) that is part of the LHCb Upgrade. This firmware has been deployed to ... ...

    Abstract This article describes a custom VHDL firmware implementation of a two-dimensional cluster-finder architecture for reconstructing hit positions in the new vertex pixel detector (VELO) that is part of the LHCb Upgrade. This firmware has been deployed to the existing FPGA cards that perform the readout of the VELO, as a further enhancement of the DAQ system, and will run in real time during physics data taking, reconstructing VELO hits coordinates on-the-fly at the LHC collision rate. This pre-processing allows the first level of the software trigger to accept a 11% higher rate of events, as the ready-made hits coordinates accelerate the track reconstruction and consumes significantly less electrical power. It additionally allows the raw pixel data to be dropped at the readout level, thus saving approximately 14% of the DAQ bandwidth. Detailed simulation studies have shown that the use of this real-time cluster finding does not introduce any appreciable degradation in the tracking performance in comparison to a full-fledged software implementation. This work is part of a wider effort aimed at boosting the real-time processing capability of HEP experiments by delegating intensive tasks to dedicated computing accelerators deployed at the earliest stages of the data acquisition chain.

    Comment: 13 pages, 22 figures. This work has been published on IEEE Transactions on Nuclear Science under a Creative Commons License
    Schlagwörter Physics - Instrumentation and Detectors ; Computer Science - Hardware Architecture ; Computer Science - Computer Vision and Pattern Recognition ; High Energy Physics - Experiment
    Thema/Rubrik (Code) 004
    Erscheinungsdatum 2023-02-08
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel: The HEV Ventilator Proposal

    Buytaert, J. / Abud, A. Abed / Akiba, K. / Bay, A. / Bertella, C. / Bowcock, T. / Byczynski, W. / Coco, V. / Collins, P. / Francisco, O. Augusto De Aguiar / Dikic, N. / Dumps, R. / Durante, P. / Prieto, A. Fern'andez / Lima, V. Franco / Guida, R. / Hennessy, K. / Hutchcroft, D. / Ilic, S. /
    Jevtic, A. / Kapusniak, K. / Cid, E. Lemos / Lindner, J. / Milovanovic, M. / Murray, D. / Nasteva, I. / Neufeld, N. / Pons, X. / Sanders, F. / Schwemmer, R. / Svihra, P.

    Abstract: We propose the design of a ventilator which can be easily manufactured and integrated into the hospital environment to support COVID-19 patients. The unit is designed to support standard ventilator modes of operation, most importantly PRVC (Pressure ... ...

    Abstract We propose the design of a ventilator which can be easily manufactured and integrated into the hospital environment to support COVID-19 patients. The unit is designed to support standard ventilator modes of operation, most importantly PRVC (Pressure Regulated Volume Control) and SIMV-PC (Synchronised Intermittent Mandatory Ventilation) modes. The unit is not yet an approved medical device and is in the concept and prototyping stage. It is presented here to invite fast feedback for development and deployment in the face of the COVID-19 pandemic.
    Schlagwörter covid19
    Verlag ArXiv
    Dokumenttyp Artikel
    Datenquelle COVID19

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  3. Buch ; Online: The HEV Ventilator Proposal

    Buytaert, J. / Abud, A. Abed / Akiba, K. / Bay, A. / Bertella, C. / Bowcock, T. / Byczynski, W. / Coco, V. / Collins, P. / Francisco, O. Augusto De Aguiar / Dikic, N. / Dumps, R. / Durante, P. / Prieto, A. Fernández / Lima, V. Franco / Guida, R. / Hennessy, K. / Hutchcroft, D. / Ilic, S. /
    Jevtic, A. / Kapusniak, K. / Cid, E. Lemos / Lindner, J. / Milovanovic, M. / Murray, D. / Nasteva, I. / Neufeld, N. / Pons, X. / Sanders, F. / Schwemmer, R. / Svihra, P.

    2020  

    Abstract: We propose the design of a ventilator which can be easily manufactured and integrated into the hospital environment to support COVID-19 patients. The unit is designed to support standard ventilator modes of operation, most importantly PRVC (Pressure ... ...

    Abstract We propose the design of a ventilator which can be easily manufactured and integrated into the hospital environment to support COVID-19 patients. The unit is designed to support standard ventilator modes of operation, most importantly PRVC (Pressure Regulated Volume Control) and SIMV-PC (Synchronised Intermittent Mandatory Ventilation) modes. The unit is not yet an approved medical device and is in the concept and prototyping stage. It is presented here to invite fast feedback for development and deployment in the face of the COVID-19 pandemic.

    Comment: 14 pages, 5 figures
    Schlagwörter Physics - Medical Physics ; covid19
    Erscheinungsdatum 2020-04-01
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel: The HEV Ventilator

    Buytaert, J. / Abud, A. Abed / Allport, P. / 'Alvarez, A. Pazos / Akiba, K. / Francisco, O. Augusto de Aguiar / Bay, A. / Bernard, F. / Baron, S. / Bertella, C. / Brunner, J. / Bowcock, T. / Jode, M. Buytaert-De / Byczynski, W. / Carvalho, R. De / Coco, V. / Collins, P. / Collins, R. / Dikic, N. /
    Dousse, N. / Dowd, B. / Dumps, R. / Durante, P. / Fadel, W. / Farry, S. / Prieto, A. Fern'andez / Flynn, G. / Lima, V. Franco / Frei, R. / Torreira, A. Gallas / Guida, R. / Hennessy, K. / Henriques, A. / Hutchcroft, D. / Ilic, S. / Jevtic, A. / Joram, C. / Kapusniak, K. / Cid, E. Lemos / Lindner, J. / Lindner, R. / Milovanovic, M. / Mico, S. / Morant, J. / Morel, M. / Manne, G. / Murray, D. / Nasteva, I. / Neufeld, N. / Neuhold, I. / L'opez, F. Pardo-Sobrino / Trigo, E. P'erez / Jallas, G. Pichel / Pilorz, E. / Piquilloud, L. / Pons, X. / Reiner, D. / Roosens, C. / Rostalski, P. / Schmidt, B. / Saucet, E. / Sanders, F. / Sigaud, C. / Schoettker, P. / Schwemmer, R. / Schindler, H. / Sharma, A. / Svihra, P. / Leemput, J. van / Vignaux, L. / Vasey, F. / Woonton, H. / Wyllie, K.

    Abstract: HEV is a low-cost, versatile, high-quality ventilator, which has been designed in response to the COVID-19 pandemic. The ventilator is intended to be used both in and out of hospital intensive care units, and for both invasive and non-invasive ... ...

    Abstract HEV is a low-cost, versatile, high-quality ventilator, which has been designed in response to the COVID-19 pandemic. The ventilator is intended to be used both in and out of hospital intensive care units, and for both invasive and non-invasive ventilation. The hardware can be complemented with an external turbine for use in regions where compressed air supplies are not reliably available. The standard modes provided include PC-A/C(Pressure Assist Control),PC-A/C-PRVC(Pressure Regulated Volume Control), PC-PSV (Pressure Support Ventilation) and CPAP (Continuous Positive airway pressure). HEV is designed to support remote training and post market surveillance via a web interface and data logging to complement the standard touch screen operation, making it suitable for a wide range of geographical deployment. The HEV design places emphasis on the quality of the pressure curves and the reactivity of the trigger, delivering a global performance which will be applicable to ventilator needs beyond theCOVID-19 pandemic. This article describes the conceptual design and presents the prototype units together with their performance evaluation.
    Schlagwörter covid19
    Verlag ArXiv
    Dokumenttyp Artikel
    Datenquelle COVID19

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  5. Buch ; Online: The HEV Ventilator

    Buytaert, J. / Abud, A. Abed / Allport, P. / Álvarez, A. Pazos / Akiba, K. / Francisco, O. Augusto de Aguiar / Bay, A. / Bernard, F. / Baron, S. / Bertella, C. / Brunner, J. / Bowcock, T. / Jode, M. Buytaert-De / Byczynski, W. / De Carvalho, R. / Coco, V. / Collins, P. / Collins, R. / Dikic, N. /
    Dousse, N. / Dowd, B. / Dumps, R. / Durante, P. / Fadel, W. / Farry, S. / Prieto, A. Fernández / Flynn, G. / Lima, V. Franco / Frei, R. / Torreira, A. Gallas / Guida, R. / Hennessy, K. / Henriques, A. / Hutchcroft, D. / Ilic, S. / Jevtic, A. / Joram, C. / Kapusniak, K. / Cid, E. Lemos / Lindner, J. / Lindner, R. / Milovanovic, M. / Mico, S. / Morant, J. / Morel, M. / Männe, G. / Murray, D. / Nasteva, I. / Neufeld, N. / Neuhold, I. / López, F. Pardo-Sobrino / Trigo, E. Pérez / Jallas, G. Pichel / Pilorz, E. / Piquilloud, L. / Pons, X. / Reiner, D. / Roosens, C. / Rostalski, P. / Schmidt, B. / Saucet, E. / Sanders, F. / Sigaud, C. / Schoettker, P. / Schwemmer, R. / Schindler, H. / Sharma, A. / Svihra, P. / van Leemput, J. / Vignaux, L. / Vasey, F. / Woonton, H. / Wyllie, K.

    2020  

    Abstract: HEV is a low-cost, versatile, high-quality ventilator, which has been designed in response to the COVID-19 pandemic. The ventilator is intended to be used both in and out of hospital intensive care units, and for both invasive and non-invasive ... ...

    Abstract HEV is a low-cost, versatile, high-quality ventilator, which has been designed in response to the COVID-19 pandemic. The ventilator is intended to be used both in and out of hospital intensive care units, and for both invasive and non-invasive ventilation. The hardware can be complemented with an external turbine for use in regions where compressed air supplies are not reliably available. The standard modes provided include PC-A/C(Pressure Assist Control),PC-A/C-PRVC(Pressure Regulated Volume Control), PC-PSV (Pressure Support Ventilation) and CPAP (Continuous Positive airway pressure). HEV is designed to support remote training and post market surveillance via a web interface and data logging to complement the standard touch screen operation, making it suitable for a wide range of geographical deployment. The HEV design places emphasis on the quality of the pressure curves and the reactivity of the trigger, delivering a global performance which will be applicable to ventilator needs beyond theCOVID-19 pandemic. This article describes the conceptual design and presents the prototype units together with their performance evaluation.

    Comment: 34 pages, 18 figures, Extended version of the article submitted to PNAS
    Schlagwörter Physics - Medical Physics ; covid19
    Thema/Rubrik (Code) 690
    Erscheinungsdatum 2020-07-23
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Artikel ; 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 / 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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 / 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    Physical review letters

    2022  Band 128, Heft 8, Seite(n) 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 />
    Sprache Englisch
    Erscheinungsdatum 2022-03-11
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.128.082001
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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

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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 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 / Websdale, D / Weisser, C / Westhenry, B D C / White, D J / Whitehead, M / Wiederhold, A R / Wiedner, D / Wilkinson, G / Wilkinson, M K / 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 / Zou, Q / Zucchelli, S / Zuliani, D / Zunica, G

    Physical review letters

    2022  Band 128, Heft 19, Seite(n) 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.
    Sprache Englisch
    Erscheinungsdatum 2022-03-11
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.128.191803
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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

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Voropaev, N / Waldi, R / Walsh, J / Wang, C / Wang, J / Wang, M / Wang, R / Wang, Y / Wang, Z / Wark, H M / Watson, N K / Weber, S G / Websdale, D / Weisser, C / Westhenry, B D C / White, D J / Whitehead, M / 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, Y / Yang, Z / Yao, Y / Yeomans, L E / Yin, H / Yu, J / Yuan, X / Yushchenko, O / Zarebski, K A / Zavertyaev, M / Zdybal, M / Zenaiev, O / Zeng, M / Zhang, D / Zhang, L / Zhang, S / Zhang, Y / Zhelezov, A / Zheng, Y / Zhou, X / Zhou, Y / Zhu, X / Zhukov, V / Zonneveld, J B / Zucchelli, S / Zuliani, D / Zunica, G

    Physical review letters

    2021  Band 126, Heft 16, Seite(n) 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.
    Sprache Englisch
    Erscheinungsdatum 2021-05-07
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.126.161802
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  9. Artikel ; Online: Observation of the Mass Difference between Neutral Charm-Meson Eigenstates.

    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 / 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 / Barlow, R J / Barsuk, S / Barter, W / Bartolini, M / Baryshnikov, F / Basels, J M / Bassi, G / Batsukh, B / Battig, A / Bay, 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 / Brodski, M / Brodzicka, J / Gonzalo, A Brossa / Brundu, D / Buonaura, A / 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 / 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 / Corti, G / Sobral, C M Costa / Couturier, B / Craik, D C / Crkovská, J / Torres, M Cruz / Currie, R / Da Silva, C L / Dadabaev, S / Dall'Occo, E / Dalseno, J / D'Ambrosio, C / Danilina, A / d'Argent, P / 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 Vries, J A / Dean, C T / Decamp, D / Del Buono, L / Delaney, B / Dembinski, H-P / Dendek, A / Denysenko, V / Derkach, D / Deschamps, O / Desse, F / Dettori, F / Dey, B / Di Canto, A / Di Cicco, A / Di Nezza, P / Didenko, S / Maronas, L Dieste / Dijkstra, H / Dobishuk, V / Donohoe, A M / Dordei, F / Dos Reis, A C / Douglas, L / Dovbnya, A / Downes, A G / Dreimanis, K / 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 / Arribas, J M Fernandez-Tenllado / 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 / Lima, V Franco / Sevilla, M Franco / Frank, M / Franzoso, E / Frau, G / Frei, C / Friday, D A / Fu, J / Fuehring, Q / Funk, W / Gabriel, E / Gaintseva, T / 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 / 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Vorobyev, A / Vorobyev, V / Voropaev, N / Vos, K / Waldi, R / Walsh, J / Wang, C / Wang, J / Wang, M / Wang, R / Wang, Y / Wang, Z / Wark, H M / Watson, N K / Weber, S G / Websdale, D / Weisser, C / Westhenry, B D C / White, D J / Whitehead, M / 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, X / Zhou, Y / Zhu, X / Zhu, Z / Zhukov, V / Zonneveld, J B / Zou, Q / Zucchelli, S / Zuliani, D / Zunica, G

    Physical review letters

    2021  Band 127, Heft 11, Seite(n) 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.
    Sprache Englisch
    Erscheinungsdatum 2021-10-06
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.127.111801
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  10. Buch ; Online: Measurement of the branching fraction of the decay $B_s^0\to K_S^0 K_S^0$

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

    Abstract: A measurement of the branching fraction of the decay $B_s^0 \to K_S^0 K_S^0$ is performed using proton-proton collision data corresponding to an integrated luminosity of 5 $fb^{-1}$ collected by the LHCb experiment between 2011 and 2016. The branching ... ...

    Abstract A measurement of the branching fraction of the decay $B_s^0 \to K_S^0 K_S^0$ is performed using proton-proton collision data corresponding to an integrated luminosity of 5 $fb^{-1}$ collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be BR($B_s^0 \to K_S^0 K_S^0$) = [8.3 $\pm$ 1.6 (stat) $\pm$ 0.9 (syst) $\pm$ 0.8 (norm) $\pm$ 0.3 ($f_s/f_d$)] $\times 10^{-6}$ , where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to uncertainties on the branching fraction of the normalization mode $B^0 \to \phi K_S^0$ and the ratio of hadronization fractions $f_s/f_d$. This is the most precise measurement of this branching fraction to date. Furthermore, a measurement of the branching fraction of the decay $B^0 \to K_S^0 K_S^0$ is performed relative to that of the $B_s^0 \to K_S^0 K_S^0$ channel, and is found to be $\frac{BR(B^0 \to K_S^0 K_S^0)}{BR(B_s^0 \to K_S^0 K_S^0)}$ = [7.5 $\pm$ 3.1 (stat) $\pm$ 0.5 (syst) $\pm$ 0.3 ($f_s/f_d$)] $\times 10^{-2}$.

    Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-030.html
    Schlagwörter High Energy Physics - Experiment
    Thema/Rubrik (Code) 612
    Erscheinungsdatum 2020-02-19
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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