Measurement of the b- Quark Production Cross Section in 7 and 13 TeV pp Collisions

被引：60

作者：

Aaij, R. ^{[40
]}

Adeva, B. ^{[39
]}

Adinolfi, M. ^{[48
]}

Ajaltouni, Z. ^{[5
]}

Akar, S. ^{[6
]}

Albrecht, J. ^{[10
]}

Alessio, F. ^{[40
]}

Alexander, M. ^{[53
]}

Ali, S. ^{[43
]}

Alkhazov, G. ^{[31
]}

Cartelle, P. Alvarez ^{[55
]}

Alves, A. A., Jr. ^{[59
]}

Amato, S. ^{[2
]}

Amerio, S. ^{[23
]}

Amhis, Y. ^{[7
]}

An, L. ^{[41
]}

Anderlini, L. ^{[18
]}

Andreassi, G. ^{[41
]}

Andreotti, M. ^{[17
,76
]}

Andrews, J. E. ^{[60
]}

Appleby, R. B. ^{[56
]}

Archilli, F. ^{[43
]}

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

Romeu, J. Arnau ^{[6
]}

Artamonov, A. ^{[3
,23
,37
,38
,39
,43
,73
]}

Artuso, M. ^{[61
]}

Aslanides, E. ^{[6
]}

Auriemma, G. ^{[26
]}

Baalouch, M. ^{[5
]}

Babuschkin, I. ^{[56
]}

Bachmann, S. ^{[12
]}

Back, J. J. ^{[50
]}

Badalov, A. ^{[38
]}

Baesso, C. ^{[62
]}

Baker, S. ^{[55
]}

Baldini, W. ^{[17
]}

Barlow, R. J. ^{[56
]}

Barschel, C. ^{[40
]}

Barsuk, S. ^{[7
]}

Barter, W. ^{[40
]}

Baszczyk, M. ^{[27
]}

Batozskaya, V. ^{[29
]}

Batsukh, B. ^{[61
]}

Battista, V. ^{[41
]}

Bay, A. ^{[4
,41
]}

Beaucourt, L. ^{[4
]}

Beddow, J. ^{[53
]}

Bedeschi, F. ^{[24
]}

Bediaga, I. ^{[1
]}

Bel, L. J. ^{[43
]}

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 Mt Blanc, LAPP, CNRS IN2P3, Annecy Le Vieux, France

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

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

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

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

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

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

[11] MPIK, Heidelberg, Germany

[12] Heidelberg Univ, Inst Phys, 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] Sez INFN Ferrara, Ferrara, Italy

[18] Sez INFN Firenze, Florence, Italy

[19] Lab Nazl INFN Frascati, Frascati, Italy

[20] Sez INFN Genova, Genoa, Italy

[21] Sez INFN Milano Bicocca, Milan, Italy

[22] Sez INFN Milano, Milan, Italy

[23] Sez INFN Padova, Padua, Italy

[24] Sez INFN Pisa, Pisa, Italy

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

[26] Sez INFN Roma La Sapienza, Rome, Italy

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

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

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

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

[31] PNPI, Gatchina, Russia

[32] ITEP, Moscow, Russia

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

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

[35] Yandex Sch Data Anal, Moscow, Russia

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

[37] IHEP, Protvino, Russia

[38] Univ Barcelona, ICCUB, Barcelona, Spain

[39] Univ Santiago Compostela, Santiago De Compostela, Spain

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

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

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

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

[44] Vrije Univ Amsterdam, Amsterdam, Netherlands

[45] NSC KIPT, Kharkiv, Ukraine

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

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

[48] Univ Bristol, HH Wills Phys Lab, Bristol, Avon, England

[49] Univ Cambridge, Cavendish Lab, Cambridge, England

[50] Univ Warwick, Dept Phys, Coventry, W Midlands, England

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 118卷 / 05期

关键词：

ROOT-S=7 TEV; DECAYS; RATIO;

D O I：

10.1103/PhysRevLett.118.052002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements of the cross section for producing b quarks in the reaction pp -> b (b) over barX are reported in 7 and 13 TeV collisions at the LHC as a function of the pseudorapidity. in the range 2 < eta < 5 covered by the acceptance of the LHCb experiment. The measurements are done using semileptonic decays of b-flavored hadrons decaying into a ground-state charmed hadron in association with a muon. The cross sections in the covered. range are 72.0 +/- 0.3 +/- 6.8 and 154.3 +/- 1.5 +/- 14.3 +/- mu b for 7 and 13 TeV. The ratio is 2.14 +/- 0.02 +/- 0.13, where the quoted uncertainties are statistical and systematic, respectively. The agreement with theoretical expectation is good at 7 TeV, but differs somewhat at 13 TeV. The measured ratio of cross sections is larger at lower eta than the model prediction.

引用

页数：11

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