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Phys Rev Lett. 2020 Oct 09;125(15):152001. doi: 10.1103/PhysRevLett.125.152001.

Observation of the B_{s}^{0}→X(3872)ϕ Decay.

Physical review letters

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Lyon, R A Manzoni, M T Meinhard, F Micheli, F Nessi-Tedaldi, F Pauss, V Perovic, G Perrin, L Perrozzi, S Pigazzini, M G Ratti, M Reichmann, C Reissel, T Reitenspiess, B Ristic, D Ruini, D A Sanz Becerra, M Schönenberger, L Shchutska, V Stampf, M L Vesterbacka Olsson, R Wallny, D H Zhu, C Amsler, C Botta, D Brzhechko, M F Canelli, A De Cosa, R Del Burgo, J K Heikkilä, M Huwiler, A Jofrehei, B Kilminster, S Leontsinis, A Macchiolo, P Meiring, V M Mikuni, U Molinatti, I Neutelings, G Rauco, A Reimers, P Robmann, K Schweiger, Y Takahashi, S Wertz, C Adloff, C M Kuo, W Lin, A Roy, T Sarkar, S S Yu, L Ceard, P Chang, Y Chao, K F Chen, P H Chen, W-S Hou, Y Y Li, R-S Lu, E Paganis, A Psallidas, A Steen, E Yazgan, B Asavapibhop, C Asawatangtrakuldee, N Srimanobhas, F Boran, S Damarseckin, Z S Demiroglu, F Dolek, C Dozen, I Dumanoglu, E Eskut, G Gokbulut, Y Guler, E Gurpinar Guler, I Hos, C Isik, E E Kangal, O Kara, A Kayis Topaksu, U Kiminsu, G Onengut, K Ozdemir, A Polatoz, A E Simsek, B Tali, U G Tok, S Turkcapar, I S Zorbakir, C Zorbilmez, B Isildak, G Karapinar, K Ocalan, M Yalvac, I O Atakisi, E Gülmez, M Kaya, O Kaya, Ö Özçelik, S Tekten, E A Yetkin, A Cakir, K Cankocak, Y Komurcu, S Sen, F Aydogmus Sen, S Cerci, B Kaynak, S Ozkorucuklu, D Sunar Cerci, B Grynyov, L Levchuk, E Bhal, S Bologna, J J Brooke, E Clement, D Cussans, H Flacher, J Goldstein, G P Heath, H F Heath, L Kreczko, B Krikler, S Paramesvaran, T Sakuma, S Seif El Nasr-Storey, V J Smith, J Taylor, A Titterton, K W Bell, A Belyaev, C Brew, R M Brown, D J A Cockerill, K V Ellis, K Harder, S Harper, J Linacre, K Manolopoulos, D M Newbold, E Olaiya, D Petyt, T Reis, T Schuh, C H Shepherd-Themistocleous, A Thea, I R Tomalin, T Williams, R Bainbridge, P Bloch, S Bonomally, J Borg, S Breeze, O Buchmuller, A Bundock, V Cepaitis, G S Chahal, D Colling, P Dauncey, G Davies, M Della Negra, P Everaerts, G Fedi, G Hall, G Iles, J Langford, L Lyons, A-M Magnan, S Malik, A Martelli, V Milosevic, J Nash, V Palladino, M Pesaresi, D M Raymond, A Richards, A Rose, E Scott, C Seez, A Shtipliyski, M Stoye, A Tapper, K Uchida, T Virdee, N Wardle, S N Webb, D Winterbottom, A G Zecchinelli, S C Zenz, J E Cole, P R Hobson, A Khan, P Kyberd, C K Mackay, I D Reid, L Teodorescu, S Zahid, A Brinkerhoff, K Call, B Caraway, J Dittmann, K Hatakeyama, A R Kanuganti, C Madrid, B McMaster, N Pastika, S Sawant, C Smith, R Bartek, A Dominguez, R Uniyal, A M Vargas Hernandez, A Buccilli, O Charaf, S I Cooper, S V Gleyzer, C Henderson, P Rumerio, C West, A Akpinar, A Albert, D Arcaro, C Cosby, Z Demiragli, D Gastler, C Richardson, J Rohlf, K Salyer, D Sperka, D Spitzbart, I Suarez, S Yuan, D Zou, G Benelli, B Burkle, X Coubez, D Cutts, Y T Duh, M Hadley, U Heintz, J M Hogan, K H M Kwok, E Laird, G Landsberg, K T Lau, J Lee, M Narain, S Sagir, R Syarif, E Usai, W Y Wong, D Yu, W Zhang, R Band, C Brainerd, R Breedon, M Calderon De La Barca Sanchez, M Chertok, J Conway, R Conway, P T Cox, R Erbacher, C Flores, G Funk, F Jensen, W Ko, O Kukral, R Lander, M Mulhearn, D Pellett, J Pilot, M Shi, D Taylor, K Tos, M Tripathi, Y Yao, F Zhang, M Bachtis, R Cousins, A Dasgupta, A Florent, D Hamilton, J Hauser, M Ignatenko, T Lam, N Mccoll, W A Nash, S Regnard, D Saltzberg, C Schnaible, B Stone, V Valuev, K Burt, Y Chen, R Clare, J W Gary, S M A Ghiasi Shirazi, G Hanson, G Karapostoli, O R Long, N Manganelli, M Olmedo Negrete, M I Paneva, W Si, S Wimpenny, Y Zhang, J G Branson, P Chang, S Cittolin, S Cooperstein, N Deelen, M Derdzinski, J Duarte, R Gerosa, D Gilbert, B Hashemi, D Klein, V Krutelyov, J Letts, M Masciovecchio, S May, S Padhi, M Pieri, V Sharma, M Tadel, F Würthwein, A Yagil, N Amin, C Campagnari, M Citron, A Dorsett, V Dutta, J Incandela, B Marsh, H Mei, A Ovcharova, H Qu, M Quinnan, J Richman, U Sarica, D Stuart, S Wang, D Anderson, A Bornheim, O Cerri, I Dutta, J M Lawhorn, N Lu, J Mao, H B Newman, T Q Nguyen, J Pata, M Spiropulu, J R Vlimant, S Xie, Z Zhang, R Y Zhu, J Alison, M B Andrews, T Ferguson, T Mudholkar, M Paulini, M Sun, I Vorobiev, J P Cumalat, W T Ford, E MacDonald, T Mulholland, R Patel, A Perloff, K Stenson, K A Ulmer, S R Wagner, J Alexander, Y Cheng, J Chu, D J Cranshaw, A Datta, A Frankenthal, K Mcdermott, J Monroy, J R Patterson, D Quach, A Ryd, W Sun, S M Tan, Z Tao, J Thom, P Wittich, M Zientek, S Abdullin, M Albrow, M Alyari, G Apollinari, A Apresyan, A Apyan, S Banerjee, L A T Bauerdick, A Beretvas, D Berry, J Berryhill, P C Bhat, K Burkett, J N Butler, A Canepa, G B Cerati, H W K Cheung, F Chlebana, M Cremonesi, V D Elvira, J Freeman, Z Gecse, E Gottschalk, L Gray, D Green, S Grünendahl, O Gutsche, R M Harris, S Hasegawa, R Heller, T C Herwig, J Hirschauer, B Jayatilaka, S Jindariani, M Johnson, U Joshi, P Klabbers, T Klijnsma, B Klima, M J Kortelainen, S Lammel, D Lincoln, R Lipton, M Liu, T Liu, J Lykken, K Maeshima, D Mason, P McBride, P Merkel, S Mrenna, S Nahn, V O'Dell, V Papadimitriou, K Pedro, C Pena, O Prokofyev, F Ravera, A Reinsvold Hall, L Ristori, B Schneider, E Sexton-Kennedy, N Smith, A Soha, W J Spalding, L Spiegel, S Stoynev, J Strait, L Taylor, S Tkaczyk, N V Tran, L Uplegger, E W Vaandering, M Wang, H A Weber, A Woodard, D Acosta, P Avery, D Bourilkov, L Cadamuro, V Cherepanov, F Errico, R D Field, D Guerrero, B M Joshi, M Kim, J Konigsberg, A Korytov, K H Lo, K Matchev, N Menendez, G Mitselmakher, D Rosenzweig, K Shi, J Wang, S Wang, X Zuo, Y R Joshi, T Adams, A Askew, D Diaz, R Habibullah, S Hagopian, V Hagopian, K F Johnson, R Khurana, T Kolberg, G Martinez, H Prosper, C Schiber, R Yohay, J Zhang, M M Baarmand, S Butalla, T Elkafrawy, M Hohlmann, D Noonan, M Rahmani, M Saunders, F Yumiceva, M R Adams, L Apanasevich, H Becerril Gonzalez, R Cavanaugh, X Chen, S Dittmer, O Evdokimov, C E Gerber, D A Hangal, D J Hofman, C Mills, G Oh, T Roy, M B Tonjes, N Varelas, J Viinikainen, X Wang, Z Wu, M Alhusseini, B Bilki, K Dilsiz, S Durgut, R P Gandrajula, M Haytmyradov, V Khristenko, O K Köseyan, J-P Merlo, A Mestvirishvili, A Moeller, J Nachtman, H Ogul, Y Onel, F Ozok, A Penzo, C Snyder, E Tiras, J Wetzel, K Yi, O Amram, B Blumenfeld, L Corcodilos, M Eminizer, A V Gritsan, S Kyriacou, P Maksimovic, C Mantilla, J Roskes, M Swartz, T Á Vámi, C Baldenegro Barrera, P Baringer, A Bean, A Bylinkin, T Isidori, S Khalil, J King, G Krintiras, A Kropivnitskaya, C Lindsey, N Minafra, M Murray, C Rogan, C Royon, S Sanders, E Schmitz, J D Tapia Takaki, Q Wang, J Williams, G Wilson, S Duric, A Ivanov, K Kaadze, D Kim, Y Maravin, D R Mendis, T Mitchell, A Modak, A Mohammadi, F Rebassoo, D Wright, E Adams, A Baden, O Baron, A Belloni, S C Eno, Y Feng, N J Hadley, S Jabeen, G Y Jeng, R G Kellogg, T Koeth, A C Mignerey, S Nabili, M Seidel, A Skuja, S C Tonwar, L Wang, K Wong, D Abercrombie, B Allen, R Bi, S Brandt, W Busza, I A Cali, Y Chen, M D'Alfonso, G Gomez Ceballos, M Goncharov, P Harris, D Hsu, M Hu, M Klute, D Kovalskyi, J Krupa, Y-J Lee, P D Luckey, B Maier, A C Marini, C Mcginn, C Mironov, S Narayanan, X Niu, C Paus, D Rankin, C Roland, G Roland, Z Shi, G S F Stephans, K Sumorok, K Tatar, D Velicanu, J Wang, T W Wang, Z Wang, B Wyslouch, R M Chatterjee, A Evans, S Guts, P Hansen, J Hiltbrand, Sh Jain, M Krohn, Y Kubota, Z Lesko, J Mans, M Revering, R Rusack, R Saradhy, N Schroeder, N Strobbe, M A Wadud, J G Acosta, S Oliveros, K Bloom, S Chauhan, D R Claes, C Fangmeier, L Finco, F Golf, J R González Fernández, I Kravchenko, J E Siado, G R Snow, B Stieger, W Tabb, G Agarwal, C Harrington, L Hay, I Iashvili, A Kharchilava, C McLean, D Nguyen, A Parker, J Pekkanen, S Rappoccio, B Roozbahani, G Alverson, E Barberis, C Freer, Y Haddad, A Hortiangtham, G Madigan, B Marzocchi, D M Morse, V Nguyen, T Orimoto, L Skinnari, A Tishelman-Charny, T Wamorkar, B Wang, A Wisecarver, D Wood, S Bhattacharya, J Bueghly, Z Chen, A Gilbert, T Gunter, K A Hahn, N Odell, M H Schmitt, K Sung, M Velasco, R Bucci, N Dev, R Goldouzian, M Hildreth, K Hurtado Anampa, C Jessop, D J Karmgard, K Lannon, W Li, N Loukas, N Marinelli, I Mcalister, F Meng, K Mohrman, Y Musienko, R Ruchti, P Siddireddy, S Taroni, M Wayne, A Wightman, M Wolf, L Zygala, J Alimena, B Bylsma, B Cardwell, L S Durkin, B Francis, C Hill, A Lefeld, B L Winer, B R Yates, G Dezoort, P Elmer, B Greenberg, N Haubrich, S Higginbotham, A Kalogeropoulos, G Kopp, S Kwan, D Lange, M T Lucchini, J Luo, D Marlow, K Mei, I Ojalvo, J Olsen, C Palmer, P Piroué, D Stickland, C Tully, S Malik, S Norberg, V E Barnes, R Chawla, S Das, L Gutay, M Jones, A W Jung, B Mahakud, G Negro, N Neumeister, C C Peng, S Piperov, H Qiu, J F Schulte, N Trevisani, F Wang, R Xiao, W Xie, T Cheng, J Dolen, N Parashar, M Stojanovic, A Baty, S Dildick, K M Ecklund, S Freed, F J M Geurts, M Kilpatrick, A Kumar, W Li, B P Padley, R Redjimi, J Roberts, J Rorie, W Shi, A G Stahl Leiton, A Zhang, A Bodek, P de Barbaro, R Demina, J L Dulemba, C Fallon, T Ferbel, M Galanti, A Garcia-Bellido, O Hindrichs, A Khukhunaishvili, E Ranken, R Taus, B Chiarito, J P Chou, A Gandrakota, Y Gershtein, E Halkiadakis, A Hart, M Heindl, E Hughes, S Kaplan, O Karacheban, I Laflotte, A Lath, R Montalvo, K Nash, M Osherson, S Salur, S Schnetzer, S Somalwar, R Stone, S A Thayil, S Thomas, H Wang, H Acharya, A G Delannoy, S Spanier, O Bouhali, M Dalchenko, A Delgado, R Eusebi, J Gilmore, T Huang, T Kamon, H Kim, S Luo, S Malhotra, R Mueller, D Overton, L Perniè, D Rathjens, A Safonov, J Sturdy, N Akchurin, J Damgov, V Hegde, S Kunori, K Lamichhane, S W Lee, T Mengke, S Muthumuni, T Peltola, S Undleeb, I Volobouev, Z Wang, A Whitbeck, E Appelt, S Greene, A Gurrola, R Janjam, W Johns, C Maguire, A Melo, H Ni, K Padeken, F Romeo, P Sheldon, S Tuo, J Velkovska, M Verweij, L Ang, M W Arenton, B Cox, G Cummings, J Hakala, R Hirosky, M Joyce, A Ledovskoy, C Neu, B Tannenwald, Y Wang, E Wolfe, F Xia, P E Karchin, N Poudyal, P Thapa, K Black, T Bose, J Buchanan, C Caillol, S Dasu, I De Bruyn, C Galloni, H He, M Herndon, A Hervé, U Hussain, A Lanaro, A Loeliger, R Loveless, J Madhusudanan Sreekala, A Mallampalli, D Pinna, T Ruggles, A Savin, V Shang, V Sharma, W H Smith, D Teague, S Trembath-Reichert, W Vetens,

Affiliations

  1. Yerevan Physics Institute, Yerevan, Armenia.
  2. Institut für Hochenergiephysik, Wien, Austria.
  3. Institute for Nuclear Problems, Minsk, Belarus.
  4. Universiteit Antwerpen, Antwerpen, Belgium.
  5. Vrije Universiteit Brussel, Brussel, Belgium.
  6. Université Libre de Bruxelles, Bruxelles, Belgium.
  7. Ghent University, Ghent, Belgium.
  8. Université Catholique de Louvain, Louvain-la-Neuve, Belgium.
  9. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil.
  10. Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.
  11. Universidade Estadual Paulista, São Paulo, Brazil.
  12. Universidade Federal do ABC, São Paulo, Brazil.
  13. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria.
  14. University of Sofia, Sofia, Bulgaria.
  15. Beihang University, Beijing, China.
  16. Department of Physics, Tsinghua University, Beijing, China.
  17. Institute of High Energy Physics, Beijing, China.
  18. State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China.
  19. Sun Yat-Sen University, Guangzhou, China.
  20. Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)-Fudan University, Shanghai, China.
  21. Zhejiang University, Hangzhou, China.
  22. Universidad de Los Andes, Bogota, Colombia.
  23. Universidad de Antioquia, Medellin, Colombia.
  24. University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, Croatia.
  25. University of Split, Faculty of Science, Split, Croatia.
  26. Institute Rudjer Boskovic, Zagreb, Croatia.
  27. University of Cyprus, Nicosia, Cyprus.
  28. Charles University, Prague, Czech Republic.
  29. Escuela Politecnica Nacional, Quito, Ecuador.
  30. Universidad San Francisco de Quito, Quito, Ecuador.
  31. Academy of Scientific Research and Technology of the Arab Republic of Egypt, Egyptian Network of High Energy Physics, Cairo, Egypt.
  32. Center for High Energy Physics (CHEP-FU), Fayoum University, El-Fayoum, Egypt.
  33. National Institute of Chemical Physics and Biophysics, Tallinn, Estonia.
  34. Department of Physics, University of Helsinki, Helsinki, Finland.
  35. Helsinki Institute of Physics, Helsinki, Finland.
  36. Lappeenranta University of Technology, Lappeenranta, Finland.
  37. IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France.
  38. Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, France.
  39. Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France.
  40. Université de Lyon, Université Claude Bernard Lyon 1, CNRS-IN2P3, Institut de Physique Nucléaire de Lyon, Villeurbanne, France.
  41. Georgian Technical University, Tbilisi, Georgia.
  42. RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany.
  43. RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany.
  44. RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany.
  45. Deutsches Elektronen-Synchrotron, Hamburg, Germany.
  46. University of Hamburg, Hamburg, Germany.
  47. Karlsruher Institut fuer Technologie, Karlsruhe, Germany.
  48. Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi, Greece.
  49. National and Kapodistrian University of Athens, Athens, Greece.
  50. National Technical University of Athens, Athens, Greece.
  51. University of Ioánnina, Ioánnina, Greece.
  52. MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary.
  53. Wigner Research Centre for Physics, Budapest, Hungary.
  54. Institute of Nuclear Research ATOMKI, Debrecen, Hungary.
  55. Institute of Physics, University of Debrecen, Debrecen, Hungary.
  56. Eszterhazy Karoly University, Karoly Robert Campus, Gyongyos, Hungary.
  57. Indian Institute of Science (IISc), Bangalore, India.
  58. National Institute of Science Education and Research, HBNI, Bhubaneswar, India.
  59. Panjab University, Chandigarh, India.
  60. University of Delhi, Delhi, India.
  61. Saha Institute of Nuclear Physics, HBNI, Kolkata,India.
  62. Indian Institute of Technology Madras, Madras, India.
  63. Bhabha Atomic Research Centre, Mumbai, India.
  64. Tata Institute of Fundamental Research-A, Mumbai, India.
  65. Tata Institute of Fundamental Research-B, Mumbai, India.
  66. Indian Institute of Science Education and Research (IISER), Pune, India.
  67. Isfahan University of Technology, Isfahan, Iran.
  68. Institute for Research in Fundamental Sciences (IPM), Tehran, Iran.
  69. University College Dublin, Dublin, Ireland.
  70. INFN Sezione di Bari.
  71. Università di Bari.
  72. Politecnico di Bari.
  73. INFN Sezione di Bologna, Bologna, Italy.
  74. Università di Bologna, Bologna, Italy.
  75. INFN Sezione di Catania, Catania, Italy.
  76. Università di Catania, Catania, Italy.
  77. INFN Sezione di Firenze, Firenze, Italy.
  78. Università di Firenze, Firenze, Italy.
  79. INFN Laboratori Nazionali di Frascati, Frascati, Italy.
  80. INFN Sezione di Genova, Genova, Italy.
  81. Università di Genova, Genova, Italy.
  82. INFN Sezione di Milano-Bicocca, Milano, Italy.
  83. Università di Milano-Bicocca, Milano, Italy.
  84. INFN Sezione di Napoli, Napoli, Italy.
  85. Università della Basilicata, Potenza, Italy.
  86. Università di Napoli 'Federico II', Napoli, Italy.
  87. Università G. Marconi, Roma, Italy.
  88. INFN Sezione di Padova, Padova, Italy.
  89. Università di Padova, Padova, Italy.
  90. INFN Sezione di Pavia.
  91. Università di Pavia.
  92. INFN Sezione di Perugia, Perugia, Italy.
  93. Università di Perugia, Perugia, Italy.
  94. INFN Sezione di Pisa, Pisa, Italy.
  95. Scuola Normale Superiore di Pisa, Pisa, Italy.
  96. Università di Pisa, Pisa, Italy.
  97. INFN Sezione di Roma, Rome, Italy.
  98. Sapienza Università di Roma, Rome, Italy.
  99. INFN Sezione di Torino, Torino, Italy.
  100. Università di Torino, Torino, Italy.
  101. Università del Piemonte Orientale, Novara, Italy.
  102. INFN Sezione di Trieste, Trieste, Italy.
  103. Università di Trieste, Trieste, Italy.
  104. Kyungpook National University, Daegu, Korea.
  105. Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea.
  106. Hanyang University, Seoul, Korea.
  107. Korea University, Seoul, Korea.
  108. Kyung Hee University, Department of Physics, Seoul, Republic of Korea.
  109. Sejong University, Seoul, Korea.
  110. Seoul National University, Seoul, Korea.
  111. University of Seoul, Seoul, Korea.
  112. Yonsei University, Department of Physics, Seoul, Korea.
  113. Sungkyunkwan University, Suwon, Korea.
  114. Riga Technical University, Riga, Latvia.
  115. Vilnius University, Vilnius, Lithuania.
  116. National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia.
  117. Universidad de Sonora (UNISON), Hermosillo, Mexico.
  118. Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico.
  119. Universidad Iberoamericana, Mexico City, Mexico.
  120. Benemerita Universidad Autonoma de Puebla, Puebla, Mexico.
  121. Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico.
  122. University of Montenegro, Podgorica, Montenegro.
  123. University of Auckland, Auckland, New Zealand.
  124. University of Canterbury, Christchurch, New Zealand.
  125. National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan.
  126. AGH University of Science and Technology Faculty of Computer Science, Electronics and Telecommunications, Krakow, Poland.
  127. National Centre for Nuclear Research, Swierk, Poland.
  128. Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland.
  129. Laboratório de Instrumentação e Física Experimental de Partículas, Lisboa, Portugal.
  130. Joint Institute for Nuclear Research, Dubna, Russia.
  131. Petersburg Nuclear Physics Institute, Gatchina (St. Petersburg), Russia.
  132. Institute for Nuclear Research, Moscow, Russia.
  133. Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of NRC 'Kurchatov Institute', Moscow, Russia.
  134. Moscow Institute of Physics and Technology, Moscow, Russia.
  135. National Research Nuclear University 'Moscow Engineering Physics Institute' (MEPhI), Moscow, Russia.
  136. P.N. Lebedev Physical Institute, Moscow, Russia.
  137. Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia.
  138. Novosibirsk State University (NSU), Novosibirsk, Russia.
  139. Institute for High Energy Physics of National Research Centre 'Kurchatov Institute', Protvino, Russia.
  140. National Research Tomsk Polytechnic University, Tomsk, Russia.
  141. Tomsk State University, Tomsk, Russia.
  142. University of Belgrade: Faculty of Physics and VINCA Institute of Nuclear Sciences, Serbia.
  143. Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.
  144. Universidad Autónoma de Madrid, Madrid, Spain.
  145. Universidad de Oviedo, Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA), Oviedo, Spain.
  146. Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain.
  147. University of Colombo, Colombo, Sri Lanka.
  148. University of Ruhuna, Department of Physics, Matara, Sri Lanka.
  149. CERN, European Organization for Nuclear Research, Geneva, Switzerland.
  150. Paul Scherrer Institut, Villigen, Switzerland.
  151. ETH Zurich-Institute for Particle Physics and Astrophysics (IPA), Zurich, Switzerland.
  152. Universität Zürich, Zurich, Switzerland.
  153. National Central University, Chung-Li, Taiwan.
  154. National Taiwan University (NTU), Taipei, Taiwan.
  155. Chulalongkorn University, Faculty of Science, Department of Physics, Bangkok, Thailand.
  156. Çukurova University, Physics Department, Science and Art Faculty, Adana, Turkey.
  157. Middle East Technical University, Physics Department, Ankara, Turkey.
  158. Bogazici University, Istanbul, Turkey.
  159. Istanbul Technical University, Istanbul, Turkey.
  160. Istanbul University, Istanbul, Turkey.
  161. Institute for Scintillation Materials of National Academy of Science of Ukraine, Kharkov, Ukraine.
  162. National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine.
  163. University of Bristol, Bristol, United Kingdom.
  164. Rutherford Appleton Laboratory, Didcot, United Kingdom.
  165. Imperial College, London, United Kingdom.
  166. Brunel University, Uxbridge, United Kingdom.
  167. Baylor University, Waco, Texas, USA.
  168. Catholic University of America, Washington, DC, USA.
  169. The University of Alabama, Tuscaloosa, Alabama, USA.
  170. Boston University, Boston, Massachusetts, USA.
  171. Brown University, Providence, Rhode Island, USA.
  172. University of California, Davis, Davis, California, USA.
  173. University of California, Los Angeles, California, USA.
  174. University of California, Riverside, Riverside, California, USA.
  175. University of California, San Diego, La Jolla, California, USA.
  176. University of California, Santa Barbara-Department of Physics, Santa Barbara, California, USA.
  177. California Institute of Technology, Pasadena, California, USA.
  178. Carnegie Mellon University, Pittsburgh, Pennsylvania, USA.
  179. University of Colorado Boulder, Boulder, Colorado, USA.
  180. Cornell University, Ithaca, New York, USA.
  181. Fermi National Accelerator Laboratory, Batavia, Illinois, USA.
  182. University of Florida, Gainesville, Florida, USA.
  183. Florida International University, Miami, Florida, USA.
  184. Florida State University, Tallahassee, Florida, USA.
  185. Florida Institute of Technology, Melbourne, Florida, USA.
  186. University of Illinois at Chicago (UIC), Chicago, Illinois, USA.
  187. The University of Iowa, Iowa City, Iowa, USA.
  188. Johns Hopkins University, Baltimore, Maryland, USA.
  189. The University of Kansas, Lawrence, Kansas, USA.
  190. Kansas State University, Manhattan, Kansas, USA.
  191. Lawrence Livermore National Laboratory, Livermore, California, USA.
  192. University of Maryland, College Park, Maryland, USA.
  193. Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
  194. University of Minnesota, Minneapolis, Minnesota, USA.
  195. University of Mississippi, Oxford, Mississippi, USA.
  196. University of Nebraska-Lincoln, Lincoln, Nebraska, USA.
  197. State University of New York at Buffalo, Buffalo, New York, USA.
  198. Northeastern University, Boston, Massachusetts, USA.
  199. Northwestern University, Evanston, Illinois, USA.
  200. University of Notre Dame, Notre Dame, Indiana, USA.
  201. The Ohio State University, Columbus, Ohio, USA.
  202. Princeton University, Princeton, New Jersey, USA.
  203. University of Puerto Rico, Mayaguez, Puerto Rico, USA.
  204. Purdue University, West Lafayette, Indiana, USA.
  205. Purdue University Northwest, Hammond, Indiana, USA.
  206. Rice University, Houston, Texas, USA.
  207. University of Rochester, Rochester, New York, USA.
  208. Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA.
  209. University of Tennessee, Knoxville, Tennessee, USA.
  210. Texas A&M University, College Station, Texas, USA.
  211. Texas Tech University, Lubbock, Texas, USA.
  212. Vanderbilt University, Nashville, Tennessee, USA.
  213. University of Virginia, Charlottesville, Virginia, USA.
  214. Wayne State University, Detroit, Michigan, USA.
  215. University of Wisconsin-Madison, Madison, WI, Wisconsin, USA.

PMID: 33095627 DOI: 10.1103/PhysRevLett.125.152001

Abstract

Using a data sample of proton-proton collisions at sqrt[s]=13  TeV, corresponding to an integrated luminosity of 140  fb^{-1} collected by the CMS experiment in 2016-2018, the B_{s}^{0}→X(3872)ϕ decay is observed. Decays into J/ψπ^{+}π^{-} and K^{+}K^{-} are used to reconstruct, respectively, the X(3872) and ϕ. The ratio of the product of branching fractions B[B_{s}^{0}→X(3872)ϕ]B[X(3872)→J/ψπ^{+}π^{-}] to the product B[B_{s}^{0}→ψ(2S)ϕ]B[ψ(2S)→J/ψπ^{+}π^{-}] is measured to be [2.21±0.29(stat)±0.17(syst)]%. The ratio B[B_{s}^{0}→X(3872)ϕ]/B[B^{0}→X(3872)K^{0}] is found to be consistent with one, while the ratio B[B_{s}^{0}→X(3872)ϕ]/B[B^{+}→X(3872)K^{+}] is two times smaller. This suggests a difference in the production dynamics of the X(3872) in B^{0} and B_{s}^{0} meson decays compared to B^{+}. The reported observation may shed new light on the nature of the X(3872) particle.

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