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Phys Rev Lett. 2018 Aug 03;121(5):052002. doi: 10.1103/PhysRevLett.121.052002.

Measurement of the Lifetime of the Doubly Charmed Baryon Ξ_{cc}^{++}.

Physical review letters

R Aaij, B Adeva, M Adinolfi, C A Aidala, Z Ajaltouni, S Akar, P Albicocco, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, S Ali, G Alkhazov, P Alvarez Cartelle, A A Alves, S Amato, S Amerio, Y Amhis, L An, L Anderlini, G Andreassi, M Andreotti, J E Andrews, R B Appleby, F Archilli, P d'Argent, J Arnau Romeu, A Artamonov, M Artuso, K Arzymatov, E Aslanides, M Atzeni, B Audurier, S Bachmann, J J Back, S Baker, V Balagura, W Baldini, A Baranov, R J Barlow, S Barsuk, W Barter, F Baryshnikov, V Batozskaya, B Batsukh, V Battista, A Bay, J Beddow, F Bedeschi, I Bediaga, A Beiter, L J Bel, N Beliy, V Bellee, N Belloli, K Belous, I Belyaev, E Ben-Haim, G Bencivenni, S Benson, S Beranek, A Berezhnoy, R Bernet, D Berninghoff, E Bertholet, A Bertolin, C Betancourt, F Betti, M O Bettler, M van Beuzekom, Ia Bezshyiko, S Bhasin, J Bhom, L Bian, S Bifani, P Billoir, A Birnkraut, A Bizzeti, M Bjørn, M P Blago, T Blake, F Blanc, S Blusk, D Bobulska, V Bocci, O Boente Garcia, T Boettcher, A Bondar, N Bondar, S Borghi, M Borisyak, M Borsato, F Bossu, M Boubdir, T J V Bowcock, C Bozzi, S Braun, M Brodski, J Brodzicka, A Brossa Gonzalo, D Brundu, E Buchanan, A Buonaura, C Burr, A Bursche, J Buytaert, W Byczynski, S Cadeddu, H Cai, R Calabrese, R Calladine, M Calvi, M Calvo Gomez, A Camboni, P Campana, D H Campora Perez, L Capriotti, A Carbone, G Carboni, R Cardinale, A Cardini, P Carniti, L Carson, K Carvalho Akiba, G Casse, L Cassina, M Cattaneo, G Cavallero, R Cenci, D Chamont, M G Chapman, M Charles, Ph Charpentier, G Chatzikonstantinidis, M Chefdeville, V Chekalina, C Chen, S Chen, S-G Chitic, V Chobanova, M Chrzaszcz, A Chubykin, P Ciambrone, X Cid Vidal, G Ciezarek, P E L Clarke, M Clemencic, H V Cliff, J Closier, V Coco, J A B Coelho, J Cogan, E Cogneras, L Cojocariu, P Collins, T Colombo, A Comerma-Montells, A Contu, G Coombs, S Coquereau, G Corti, M Corvo, C M Costa Sobral, B Couturier, G A Cowan, D C Craik, A Crocombe, M Cruz Torres, R Currie, C D'Ambrosio, F Da Cunha Marinho, C L Da Silva, E Dall'Occo, J Dalseno, A Danilina, A Davis, O De Aguiar Francisco, K De Bruyn, S De Capua, M De Cian, J M De Miranda, L De Paula, M De Serio, P De Simone, C T Dean, D Decamp, L Del Buono, B Delaney, H-P Dembinski, M Demmer, A Dendek, D Derkach, O Deschamps, F Desse, F Dettori, B Dey, A Di Canto, P Di Nezza, S Didenko, H Dijkstra, F Dordei, M Dorigo, A Dosil Suárez, L Douglas, A Dovbnya, K Dreimanis, L Dufour, G Dujany, P Durante, J M Durham, D Dutta, R Dzhelyadin, M Dziewiecki, A Dziurda, A Dzyuba, S Easo, U Egede, V Egorychev, S Eidelman, S Eisenhardt, U Eitschberger, R Ekelhof, L Eklund, S Ely, A Ene, S Escher, S Esen, T Evans, A Falabella, N Farley, S Farry, D Fazzini, L Federici, P Fernandez Declara, A Fernandez Prieto, F Ferrari, L Ferreira Lopes, F Ferreira Rodrigues, M Ferro-Luzzi, S Filippov, R A Fini, M Fiorini, M Firlej, C Fitzpatrick, T Fiutowski, F Fleuret, M Fontana, F Fontanelli, R Forty, V Franco Lima, M Frank, C Frei, J Fu, W Funk, C Färber, M Féo Pereira Rivello Carvalho, E Gabriel, A Gallas Torreira, D Galli, S Gallorini, S Gambetta, Y Gan, M Gandelman, P Gandini, Y Gao, L M Garcia Martin, B Garcia Plana, J García Pardiñas, J Garra Tico, L Garrido, D Gascon, C Gaspar, L Gavardi, G Gazzoni, D Gerick, E Gersabeck, M Gersabeck, T Gershon, D Gerstel, Ph Ghez, S Gianì, V Gibson, O G Girard, L Giubega, K Gizdov, V V Gligorov, D Golubkov, A Golutvin, A Gomes, I V Gorelov, C Gotti, E Govorkova, J P Grabowski, R Graciani Diaz, L A Granado Cardoso, E Graugés, E Graverini, G Graziani, A Grecu, R Greim, P Griffith, L Grillo, L Gruber, B R Gruberg Cazon, O Grünberg, C Gu, E Gushchin, Yu Guz, T Gys, C Göbel, T Hadavizadeh, C Hadjivasiliou, G Haefeli, C Haen, S C Haines, B Hamilton, X Han, T H Hancock, S Hansmann-Menzemer, N Harnew, S T Harnew, T Harrison, C Hasse, M Hatch, J He, M Hecker, K Heinicke, A Heister, K Hennessy, L Henry, E van Herwijnen, M Heß, A Hicheur, R Hidalgo Charman, D Hill, M Hilton, P H Hopchev, W Hu, W Huang, Z C Huard, W Hulsbergen, T Humair, M Hushchyn, D Hutchcroft, D Hynds, P Ibis, M Idzik, P Ilten, K Ivshin, R Jacobsson, J Jalocha, E Jans, A Jawahery, F Jiang, M John, D Johnson, C R Jones, C Joram, B Jost, N Jurik, S Kandybei, M Karacson, J M Kariuki, S Karodia, N Kazeev, M Kecke, F Keizer, M Kelsey, M Kenzie, T Ketel, E Khairullin, B Khanji, C Khurewathanakul, K E Kim, T Kirn, S Klaver, K Klimaszewski, T Klimkovich, S Koliiev, M Kolpin, R Kopecna, P Koppenburg, I Kostiuk, S Kotriakhova, M Kozeiha, L Kravchuk, M Kreps, F Kress, P Krokovny, W Krupa, W Krzemien, W Kucewicz, M Kucharczyk, V Kudryavtsev, A K Kuonen, T Kvaratskheliya, D Lacarrere, G Lafferty, A Lai, D Lancierini, G Lanfranchi, C Langenbruch, T Latham, C Lazzeroni, R Le Gac, A Leflat, J Lefrançois, R Lefèvre, F Lemaitre, O Leroy, T Lesiak, B Leverington, P-R Li, T Li, Z Li, X Liang, T Likhomanenko, R Lindner, F Lionetto, V Lisovskyi, X Liu, D Loh, A Loi, I Longstaff, J H Lopes, G H Lovell, D Lucchesi, M Lucio Martinez, A Lupato, E Luppi, O Lupton, A Lusiani, X Lyu, F Machefert, F Maciuc, V Macko, P Mackowiak, S Maddrell-Mander, O Maev, K Maguire, D Maisuzenko, M W Majewski, S Malde, B Malecki, A Malinin, T Maltsev, G Manca, G Mancinelli, D Marangotto, J Maratas, J F Marchand, U Marconi, C Marin Benito, M Marinangeli, P Marino, J Marks, P J Marshall, G Martellotti, M Martin, M Martinelli, D Martinez Santos, F Martinez Vidal, A Massafferri, M Materok, R Matev, A Mathad, Z Mathe, C Matteuzzi, A Mauri, E Maurice, B Maurin, A Mazurov, M McCann, A McNab, R McNulty, J V Mead, B Meadows, C Meaux, F Meier, N Meinert, D Melnychuk, M Merk, A Merli, E Michielin, D A Milanes, E Millard, M-N Minard, L Minzoni, D S Mitzel, A Mogini, J Molina Rodriguez, T Mombächer, I A Monroy, S Monteil, M Morandin, G Morello, M J Morello, O Morgunova, J Moron, A B Morris, R Mountain, F Muheim, M Mulder, C H Murphy, D Murray, A Mödden, D Müller, J Müller, K Müller, V Müller, P Naik, T Nakada, R Nandakumar, A Nandi, T Nanut, I Nasteva, M Needham, N Neri, S Neubert, N Neufeld, M Neuner, T D Nguyen, C Nguyen-Mau, S Nieswand, R Niet, N Nikitin, A Nogay, D P O'Hanlon, A Oblakowska-Mucha, V Obraztsov, S Ogilvy, R Oldeman, C J G Onderwater, A Ossowska, J M Otalora Goicochea, P Owen, A Oyanguren, P R Pais, T Pajero, A Palano, M Palutan, G Panshin, A Papanestis, M Pappagallo, L L Pappalardo, W Parker, C Parkes, G Passaleva, A Pastore, M Patel, C Patrignani, A Pearce, A Pellegrino, G Penso, M Pepe Altarelli, S Perazzini, D Pereima, P Perret, L Pescatore, K Petridis, A Petrolini, A Petrov, S Petrucci, M Petruzzo, B Pietrzyk, G Pietrzyk, M Pikies, M Pili, D Pinci, J Pinzino, F Pisani, A Piucci, V Placinta, S Playfer, J Plews, M Plo Casasus, F Polci, M Poli Lener, A Poluektov, N Polukhina, I Polyakov, E Polycarpo, G J Pomery, S Ponce, A Popov, D Popov, S Poslavskii, C Potterat, E Price, J Prisciandaro, C Prouve, V Pugatch, A Puig Navarro, H Pullen, G Punzi, W Qian, J Qin, R Quagliani, B Quintana, B Rachwal, J H Rademacker, M Rama, M Ramos Pernas, M S Rangel, F Ratnikov, G Raven, M Ravonel Salzgeber, M Reboud, F Redi, S Reichert, A C Dos Reis, F Reiss, C Remon Alepuz, Z Ren, V Renaudin, S Ricciardi, S Richards, K Rinnert, P Robbe, A Robert, A B Rodrigues, E Rodrigues, J A Rodriguez Lopez, M Roehrken, A Rogozhnikov, S Roiser, A Rollings, V Romanovskiy, A Romero Vidal, M Rotondo, M S Rudolph, T Ruf, J Ruiz Vidal, J J Saborido Silva, N Sagidova, B Saitta, V Salustino Guimaraes, C Sanchez Gras, C Sanchez Mayordomo, B Sanmartin Sedes, R Santacesaria, C Santamarina Rios, M Santimaria, E Santovetti, G Sarpis, A Sarti, C Satriano, A Satta, M Saur, D Savrina, S Schael, M Schellenberg, M Schiller, H Schindler, M Schmelling, T Schmelzer, B Schmidt, O Schneider, A Schopper, H F Schreiner, M Schubiger, M H Schune, R Schwemmer, B Sciascia, A Sciubba, A Semennikov, E S Sepulveda, A Sergi, N Serra, J Serrano, L Sestini, A Seuthe, P Seyfert, M Shapkin, Y Shcheglov, T Shears, L Shekhtman, V Shevchenko, E Shmanin, B G Siddi, R Silva Coutinho, L Silva de Oliveira, G Simi, S Simone, N Skidmore, T Skwarnicki, J G Smeaton, E Smith, I T Smith, M Smith, M Soares, L Soares Lavra, M D Sokoloff, F J P Soler, B Souza De Paula, B Spaan, P Spradlin, F Stagni, M Stahl, S Stahl, P Stefko, S Stefkova, O Steinkamp, S Stemmle, O Stenyakin, M Stepanova, H Stevens, S Stone, B Storaci, S Stracka, M E Stramaglia, M Straticiuc, U Straumann, S Strokov, J Sun, L Sun, K Swientek, V Syropoulos, T Szumlak, M Szymanski, S T'Jampens, Z Tang, A Tayduganov, T Tekampe, G Tellarini, F Teubert, E Thomas, J van Tilburg, M J Tilley, V Tisserand, S Tolk, L Tomassetti, D Tonelli, D Y Tou, R Tourinho Jadallah Aoude, E Tournefier, M Traill, M T Tran, A Trisovic, A Tsaregorodtsev, G Tuci, A Tully, N Tuning, A Ukleja, A Usachov, A Ustyuzhanin, U Uwer, C Vacca, A Vagner, V Vagnoni, A Valassi, S Valat, G Valenti, R Vazquez Gomez, P Vazquez Regueiro, S Vecchi, M van Veghel, J J Velthuis, M Veltri, G Veneziano, A Venkateswaran, T A Verlage, M Vernet, M Veronesi, N V Veronika, M Vesterinen, J V Viana Barbosa, D Vieira, M Vieites Diaz, H Viemann, X Vilasis-Cardona, A Vitkovskiy, M Vitti, V Volkov, A Vollhardt, B Voneki, A Vorobyev, V Vorobyev, J A de Vries, C Vázquez Sierra, R Waldi, J Walsh, J Wang, M Wang, Y Wang, Z Wang, D R Ward, H M Wark, N K Watson, D Websdale, A Weiden, C Weisser, M Whitehead, J Wicht, G Wilkinson, M Wilkinson, I Williams, M R J Williams, M Williams, T Williams, F F Wilson, J Wimberley, M Winn, J Wishahi, W Wislicki, M Witek, G Wormser, S A Wotton, K Wyllie, D Xiao, Y Xie, A Xu, M Xu, Q Xu, Z Xu, Z Xu, Z Yang, Z Yang, Y Yao, L E Yeomans, H Yin, J Yu, X Yuan, O Yushchenko, K A Zarebski, M Zavertyaev, D Zhang, L Zhang, W C Zhang, Y Zhang, A Zhelezov, Y Zheng, X Zhu, V Zhukov, J B Zonneveld, S Zucchelli,

Affiliations

  1. Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands.
  2. Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
  3. H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom.
  4. University of Michigan, Ann Arbor, USA [associated with Syracuse University, Syracuse, New York, USA].
  5. Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.
  6. University of Cincinnati, Cincinnati, Ohio, USA.
  7. INFN Laboratori Nazionali di Frascati, Frascati, Italy.
  8. Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
  9. European Organization for Nuclear Research (CERN), Geneva, Switzerland.
  10. School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
  11. ICCUB, Universitat de Barcelona, Barcelona, Spain.
  12. Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia.
  13. Imperial College London, London, United Kingdom.
  14. Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
  15. INFN Sezione di Padova, Padova, Italy.
  16. LAL, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay, France.
  17. Center for High Energy Physics, Tsinghua University, Beijing, China.
  18. INFN Sezione di Firenze, Firenze, Italy.
  19. Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
  20. INFN Sezione di Ferrara, Ferrara, Italy.
  21. University of Maryland, College Park, Maryland, USA.
  22. School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
  23. Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
  24. Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France.
  25. Institute for High Energy Physics (IHEP), Protvino, Russia.
  26. Syracuse University, Syracuse, New York, USA.
  27. Yandex School of Data Analysis, Moscow, Russia.
  28. Physik-Institut, Universität Zürich, Zürich, Switzerland.
  29. INFN Sezione di Cagliari, Monserrato, Italy.
  30. Department of Physics, University of Warwick, Coventry, United Kingdom.
  31. Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia.
  32. National Center for Nuclear Research (NCBJ), Warsaw, Poland.
  33. INFN Sezione di Pisa, Pisa, Italy.
  34. Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil.
  35. University of Chinese Academy of Sciences, Beijing, China [associated with Center for High Energy Physics, Tsinghua University, Beijing, China].
  36. INFN Sezione di Milano-Bicocca, Milano, Italy.
  37. LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France.
  38. I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany.
  39. Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia.
  40. INFN Sezione di Bologna, Bologna, Italy.
  41. Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
  42. Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland.
  43. School of Physics and Technology, Wuhan University, Wuhan, China [associated with Center for High Energy Physics, Tsinghua University, Beijing, China].
  44. University of Birmingham, Birmingham, United Kingdom.
  45. Department of Physics, University of Oxford, Oxford, United Kingdom.
  46. INFN Sezione di Roma La Sapienza, Roma, Italy.
  47. Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
  48. Budker Institute of Nuclear Physics (SB RAS), Novosibirsk, Russia.
  49. Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
  50. INFN Sezione di Roma Tor Vergata, Roma, Italy.
  51. INFN Sezione di Genova, Genova, Italy.
  52. School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
  53. Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France.
  54. Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
  55. Los Alamos National Laboratory (LANL), Los Alamos, New Mexico, USA [associated with Syracuse University, Syracuse, New York, USA].
  56. INFN Sezione di Bari, Bari, Italy.
  57. Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany.
  58. AGH - University of Science and Technology, Faculty of Physics and Applied Computer Science, Kraków, Poland.
  59. Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China [associated with Center for High Energy Physics, Tsinghua University, Beijing, China].
  60. National University of Science and Technology "MISIS", Moscow, Russia [associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia].
  61. NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine.
  62. STFC Rutherford Appleton Laboratory, Didcot, United Kingdom.
  63. Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS), Moscow, Russia.
  64. INFN Sezione di Milano, Milano, Italy.
  65. Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Valencia, Spain [associated with ICCUB, Universitat de Barcelona, Barcelona, Spain].
  66. Institut für Physik, Universität Rostock, Rostock, Germany [associated with Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany].
  67. Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil [associated with Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil].
  68. Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, Netherlands.
  69. Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine.
  70. National Research Centre Kurchatov Institute, Moscow, Russia [associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia].
  71. School of Physics, University College Dublin, Dublin, Ireland.
  72. Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia [associated with LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France].
  73. Van Swinderen Institute, University of Groningen, Groningen, Netherlands [associated with Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands].
  74. National Research Tomsk Polytechnic University, Tomsk, Russia [associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia].

PMID: 30118314 DOI: 10.1103/PhysRevLett.121.052002

Abstract

The first measurement of the lifetime of the doubly charmed baryon Ξ_{cc}^{++} is presented, with the signal reconstructed in the final state Λ_{c}^{+}K^{-}π^{+}π^{+}. The data sample used corresponds to an integrated luminosity of 1.7  fb^{-1}, collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy of 13 TeV. The Ξ_{cc}^{++} lifetime is measured to be 0.256_{-0.022}^{+0.024}(stat)±0.014(syst)  ps.

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