Measurements of ψ(2S) and X(3872) → J/ψπ + π - production in pp collisions at √s=8 Tev with the ATLAS detector

被引:0
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作者
Aaboud, M. [187 ,188 ]
Aad, G. [120 ,121 ]
Abbott, B. [152 ]
Abdallah, J. [11 ]
Abdinov, O. [15 ]
Abeloos, B. [156 ]
Aben, R. [145 ,146 ]
AbouZeid, O. S. [191 ]
Abraham, N. L. [211 ]
Abramowicz, H. [215 ]
Abreu, H. [214 ]
Abreu, R. [155 ]
Abulaiti, Y. [206 ,207 ]
Acharya, B. S. [231 ,232 ,252 ]
Adachi, S. [217 ,218 ]
Adamczyk, L. [60 ]
Adams, D. L. [39 ]
Adelman, J. [147 ]
Adomeit, S. [136 ]
Adye, T. [178 ]
Affolder, A. A. [106 ]
Agatonovic-Jovin, T. [17 ]
Agricola, J. [80 ]
Aguilar-Saavedra, J. A. [167 ,172 ,173 ]
Ahlen, S. P. [33 ]
Ahmadov, F. [15 ,95 ]
Aielli, G. [181 ,182 ]
Akerstedt, H. [206 ,207 ]
Akesson, T. P. A. [116 ]
Akimov, A. V. [132 ]
Alberghi, G. L. [30 ,31 ]
Albert, J. [242 ]
Albrand, S. [81 ]
Alconada Verzini, M. J. [101 ,102 ]
Aleksa, M. [46 ]
Aleksandrov, I. N. [95 ]
Alexa, C. [40 ]
Alexander, G. [215 ]
Alexopoulos, T. [13 ]
Alhroob, M. [152 ]
Ali, B. [175 ]
Aliev, M. [104 ,105 ]
Alimonti, G. [127 ]
Alison, J. [47 ]
Alkire, S. P. [56 ]
Allbrooke, B. M. M. [211 ]
Allen, B. W. [155 ]
Allport, P. P. [24 ]
Aloisio, A. [18 ,66 ,91 ,141 ,142 ,164 ,218 ]
Alonso, A. [57 ,101 ]
机构
[1] Univ Adelaide, Dept Phys, Adelaide, SA, Australia
[2] SUNY Albany, Dept Phys, Albany, NY 12222 USA
[3] Univ Alberta, Dept Phys, Edmonton, AB, Canada
[4] Ankara Univ, Dept Phys, Ankara, Turkey
[5] Istanbul Aydin Univ, Istanbul, Turkey
[6] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey
[7] CNRS, IN2P3, LAPP, Annecy Le Vieux, France
[8] Univ Savoie Mont Blanc, Annecy Le Vieux, France
[9] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA
[10] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
[11] Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA
[12] Univ Athens, Dept Phys, Athens, Greece
[13] Natl Tech Univ Athens, Dept Phys, Zografos, Greece
[14] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA
[15] Azerbaijan Acad Sci, Inst Phys, Baku, Azerbaijan
[16] Barcelona Inst Sci & Technol, Inst Fis Altes Energies, Barcelona, Spain
[17] Univ Belgrade, Inst Phys, Barcelona, Spain
[18] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[19] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA
[20] Univ Calif Berkeley, Berkeley, CA 94720 USA
[21] Humboldt Univ, Dept Phys, Berlin, Germany
[22] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland
[23] Univ Bern, High Energy Phys Lab, Bern, Switzerland
[24] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[25] Bogazici Univ, Dept Phys, Istanbul, Turkey
[26] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey
[27] Istanbul Bilgi Univ, Fac Engn & Nat Sci, Istanbul, Turkey
[28] Bahcesehir Univ, Fac Engn & Nat Sci, Istanbul, Turkey
[29] Univ Antonio Narino, Ctr Invest, Bogota, Colombia
[30] Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy
[31] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy
[32] Univ Bonn, Inst Phys, Bonn, Germany
[33] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA
[34] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA
[35] Univ Fed Rio de Janeiro, COPPE EE IF, Rio De Janeiro, Brazil
[36] Univ Fed Juiz de Fora, Elect Circuits Dept, Juiz De Fora, Brazil
[37] Fed Univ Sao Joao del Rei UFSJ, Sao Joao Del Rei, Brazil
[38] Univ Sao Paulo, Inst Fis, Sao Paulo, Brazil
[39] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[40] Natl Inst Phys & Nucl Engn, Bucharest, Romania
[41] Dept Phys, Natl Inst Res & Dev Isotop & Mol Technol, Cluj Napoca, Romania
[42] West Univ Timisoara, Timisoara, Romania
[43] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[44] Univ Cambridge, Cavendish Lab, Cambridge, England
[45] Carleton Univ, Dept Phys, Ottawa, ON, Canada
[46] CERN, Geneva, Switzerland
[47] Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA
[48] Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile
[49] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile
[50] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
来源
关键词
B physics; Hadron-Hadron scattering (experiments); DECAY; STATE;
D O I
10.1007/JHEP01(2017)117
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Differential cross sections are presented for the prompt and non-prompt production of the hidden-charm states X(3872) and psi(2S), in the decay mode J/psi pi (+) pi (-), measured using 11.4 fb(-1) of pp collisions at root s = 8 Tev by the ATLAS detector at the LHC. The ratio of cross-sections X(3872)/psi(2S) is also given, separately for prompt and non-prompt components, as well as the non-prompt fractions of X(3872) and psi(2S). Assuming independent single effective lifetimes for non-prompt X(3872) and psi(2S) production gives separating short- and long-lived contributions, assuming that the short-lived component is due to B (c) decays, gives R (B) = (3.57 +/- 0.33(stat) +/- 0.11(sys)) x 10(-2), with the fraction of non-prompt X(3872) produced via B (c) decays for p (T)(X(3872)) > 10 GeV being (25 +/- 13(stat) +/- 2(sys) +/- 5(spin))%. The distributions of the dipion invariant mass in the X(3872) and psi(2S) decays are also measured and compared to theoretical predictions.
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