Measurement of the B± production cross-section in pp collisions at √s=7 and 13 TeV

被引：0

作者：

Aaij, R. ^{[42
]}

Adeva, B. ^{[41
]}

Adinolfi, M. ^{[50
]}

Ajaltouni, Z. ^{[5
]}

Akar, S. ^{[61
]}

Albrecht, J. ^{[10
]}

Alessio, F. ^{[42
]}

Alexander, M. ^{[55
]}

Albero, A. Alfonso ^{[40
]}

Ali, S. ^{[45
]}

Alkhazov, G. ^{[33
]}

Cartelle, P. Alvarez ^{[57
]}

Alves, A. A. ^{[61
]}

Amato, S. ^{[2
]}

Amerio, S. ^{[25
]}

Amhis, Y. ^{[7
]}

An, L. ^{[3
]}

Anderlini, L. ^{[19
]}

Andreassi, G. ^{[43
]}

Andreotti, M. ^{[17
,18
]}

Andrews, J. E. ^{[62
]}

Appleby, R. B. ^{[58
]}

Archilli, F. ^{[45
]}

d'Argent, P. ^{[12
]}

Romeu, J. Arnau ^{[6
]}

Artamonov, A. ^{[8
,22
,23
,39
]}

Artuso, M. ^{[63
]}

Aslanides, E. ^{[6
]}

Atzeni, M. ^{[44
]}

Auriemma, G. ^{[28
]}

Baalouch, M. ^{[5
]}

Babuschkin, I. ^{[58
]}

Bachmann, S. ^{[12
]}

Back, J. J. ^{[52
]}

Badalov, A. ^{[40
,85
]}

Baesso, C. ^{[64
]}

Baker, S. ^{[57
]}

Balagura, V. ^{[7
,75
]}

Baldini, W. ^{[17
,18
]}

Baranov, A. ^{[37
]}

Barlow, R. J. ^{[58
]}

Barschel, C. ^{[42
]}

Barsuk, S. ^{[7
]}

Barter, W. ^{[58
]}

Baryshnikov, F. ^{[34
]}

Batozskaya, V. ^{[31
]}

Battista, V. ^{[43
]}

Bay, A. ^{[43
]}

Beaucourt, L. ^{[4
]}

Beddow, J. ^{[55
]}

机构：

[1] CBPF, Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil

[3] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China

[4] Univ Savoie Mont Blanc, CNRS, IN2P3, LAPP, Annecy Le Vieux, France

[5] Univ Blaise Pascal, Clermont Univ, CNRS, IN2P3,LPC, Clermont Ferrand, France

[6] Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France

[7] Univ Paris Sud, CNRS, IN2P3, LAL, Orsay, France

[8] Univ Paris Diderot, Univ Paris 06, CNRS, IN2P3,LPNHE, Paris, France

[9] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany

[10] Tech Univ Dortmund, Fak Phys, Dortmund, Germany

[11] Max Planck Inst Kernphys, Heidelberg, Germany

[12] Heidelberg Univ, Phys Inst, Heidelberg, Germany

[13] Univ Coll Dublin, Sch Phys, Dublin, Ireland

[14] Sez INFN Bari, Bari, Italy

[15] Sez INFN Bologna, Bologna, Italy

[16] Sez INFN Cagliari, Cagliari, Italy

[17] Univ Ferrara, Ferrara, Italy

[18] Ist Nazl Fis Nucl, Ferrara, Italy

[19] Sez INFN Firenze, Florence, Italy

[20] Lab Nazl INFN Frascati, Frascati, Italy

[21] Sez INFN Genova, Genoa, Italy

[22] Univ Milan, Milan, Italy

[23] Ist Nazl Fis Nucl, Milan, Italy

[24] Sez Milano, Milan, Italy

[25] Sez INFN Padova, Padua, Italy

[26] Sez INFN Pisa, Pisa, Italy

[27] Sez INFN Roma Tor Vergata, Rome, Italy

[28] Sez INFN Roma Sapienza, Rome, Italy

[29] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland

[30] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland

[31] Natl Ctr Nucl Res NCBJ, Warsaw, Poland

[32] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania

[33] Petersburg Nucl Phys Inst, Gatchina, Russia

[34] Inst Theoret & Expt Phys, Moscow, Russia

[35] Moscow State Univ SINP MSU, Inst Nucl Phys, Moscow, Russia

[36] Russian Acad Sci INR RAN, Inst Nucl Res, Moscow, Russia

[37] Yandex Sch Data Anal, Moscow, Russia

[38] Budker Inst Nucl Phys SB RAS, Novosibirsk, Russia

[39] Inst High Energy Phys, Protvino, Russia

[40] Univ Barcelona, ICCUB, Barcelona, Spain

[41] Univ Santiago de Compostela, Santiago De Compostela, Spain

[42] European Org Nucl Res CERN, Geneva, Switzerland

[43] Ecole Polytech Fed Lausanne, Inst Phys, Lausanne, Switzerland

[44] Univ Zurich, Phys Inst, Zurich, Switzerland

[45] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands

[46] Vrije Univ Amsterdam, Amsterdam, Netherlands

[47] NSC Kharkiv Inst Phys & Technol NSC KIPT, Kharkov, Ukraine

[48] Natl Acad Sci KINR, Inst Nucl Res, Kiev, Ukraine

[49] Univ Birmingham, Birmingham, W Midlands, England

[50] HH Wills Phys Lab, Bristol, Avon, England

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 12期

关键词：

B physics; Hadron-Hadron scattering (experiments); Particle and resonance production; DECAY;

D O I：

10.1007/JHEP12(2017)026

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：

The production of B +/- mesons is studied in pp collisions at centre-of-mass energies of 7 and 13 TeV, using B-+/- -> J/psi K-+/- decays and data samples corresponding to 1.0 fb(-1) and 0.3 fb(-1), respectively. The production cross-sections summed over both charges and integrated over the transverse momentum range 0 < pT < 40 GeV/c and the rapidity range 2.0 < y < 4.5 are measured to be sigma-(pp -> B-+/- X, root s = 7 TeV) = 43.0 +/- 0.2 +/- 2.5 +/- 1.7 mu b, sigma(pp -> B-+/- X, root s = 13 TeV) = 86.6 +/- 0.5 +/- 5.4 +/- 3.4 mu b, where the first uncertainties are statistical, the second are systematic, and the third are due to the limited knowledge of the B-+/- -> J/psi K-+/- branching fraction. The ratio of the cross-section at 13 TeV to that at 7 TeV is determined to be 2.02 +/- 0.02 (stat) +/- 0.12 (syst). Differential cross-sections are also reported as functions of pi, and y. All results are in agreement with theoretical calculations based on the state-of-art fixed next-to-leading order quantum chromodynamics.

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