Measurement of forward Z → e+e- production at √s=8 TeV

被引：0

作者：

Aaij, R. ^{[42
]}

Adeva, B. ^{[38
]}

Adinolfi, M. ^{[47
]}

Affolder, A. ^{[53
]}

Ajaltouni, Z. ^{[5
]}

Akar, S. ^{[6
]}

Albrecht, J. ^{[9
]}

Alessio, F. ^{[39
]}

Alexander, M. ^{[52
]}

Ali, S. ^{[42
]}

Alkhazov, G. ^{[30
]}

Alvarez Cartelle, P. ^{[54
]}

Alves, A. A., Jr. ^{[58
]}

Amato, S. ^{[2
]}

Amerio, S. ^{[22
]}

Amhis, Y. ^{[7
]}

An, L. ^{[3
]}

Anderlini, L. ^{[17
,76
]}

Anderson, J. ^{[41
]}

Andreotti, M. ^{[16
,75
]}

Andrews, J. E. ^{[59
]}

Appleby, R. B. ^{[55
]}

Aquines Gutierrez, O. ^{[10
]}

Archilli, F. ^{[39
]}

Artamonov, A. ^{[36
]}

Artuso, M. ^{[60
]}

Aslanides, E. ^{[6
]}

Auriemma, G. ^{[25
,83
]}

Baalouch, M. ^{[5
]}

Bachmann, S. ^{[11
]}

Back, J. J. ^{[49
]}

Badalov, A. ^{[37
]}

Baesso, C. ^{[61
]}

Baldini, W. ^{[16
,39
]}

Barlow, R. J. ^{[55
]}

Barschel, C. ^{[39
]}

Barsuk, S. ^{[7
]}

Barter, W. ^{[39
]}

Batozskaya, V. ^{[28
]}

Battista, V. ^{[40
]}

Bay, A. ^{[40
]}

Beaucourt, L. ^{[4
]}

Beddow, J. ^{[52
]}

Bedeschi, F. ^{[23
]}

Bediaga, I.

Belyaev, I. ^{[31
]}

Ben-Haim, E. ^{[8
]}

Bencivenni, G. ^{[18
]}

Benson, S. ^{[39
]}

Benton, J. ^{[47
]}

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 100084, Peoples R China

[4] Univ Savoie Mt 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, CPPM, IN2P3, Marseille, France

[7] Univ Paris 11, CNRS, IN2P3, LAL, Orsay, France

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

[9] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany

[10] MPIK, Heidelberg, Germany

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

[12] Univ Coll Dublin, Sch Phys, Dublin 2, Ireland

[13] Sez INFN Bari, Bari, Italy

[14] Sez INFN Bologna, Bologna, Italy

[15] Sez INFN Cagliari, Cagliari, Italy

[16] Sez INFN Ferrara, Ferrara, Italy

[17] Sez INFN Firenze, Florence, Italy

[18] Lab Nazl INFN Frascati, Frascati, Italy

[19] Sez INFN Genova, Genoa, Italy

[20] Sez INFN Milano Bicocca, Milan, Italy

[21] Sez INFN Milano, Milan, Italy

[22] Sez INFN Padova, Padua, Italy

[23] Sez INFN Pisa, Pisa, Italy

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

[25] Sez INFN Roma Sapienza, Rome, Italy

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

[27] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland

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

[29] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest 077125, Romania

[30] PNPI, Gatchina, Russia

[31] ITEP, Moscow, Russia

[32] Moscow MV Lomonosov State Univ, SINP, Inst Nucl Phys, Moscow, Russia

[33] Russian Acad Sci, RAN, INR, Moscow, Russia

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

[35] Novosibirsk State Univ, Novosibirsk 630090, Russia

[36] IHEP, Protvino, Russia

[37] Univ Barcelona, Barcelona, Spain

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

[39] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland

[40] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

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

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

[43] Vrije Univ Amsterdam, Amsterdam, Netherlands

[44] NSC KIPT, Kharkiv, Ukraine

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

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

[47] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[48] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[49] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[50] Rutherford Appleton Lab, STFC, Didcot OX11 0QX, Oxon, England

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2015年 / 05期

基金：

美国国家科学基金会;

关键词：

Electroweak interaction; QCD; Forward physics; Hadron-Hadron Scattering; proton-proton scattering; PARTON DISTRIBUTIONS;

D O I：

10.1007/JHEP05(2015)109

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：

A measurement of the cross-section for Z-boson production in the forward region of pp collisions at 8 TeV centre-of-mass energy is presented. The measurement is based on a sample of Z -> e(+)e(-) decays reconstructed using the LHCb detector, corresponding to an integrated luminosity of 2.0 fb(-1). The acceptance is defined by the requirements 2.0 < eta < 4.5 and p(T) > 20 GeV for the pseudorapidities and transverse momenta of the leptons. Their invariant mass is required to lie in the range 60-120 GeV. The cross-section is determined to be sigma(pp -> Z -> e(+)e(-)) = 93.81 +/- 0.41(stat) +/- 1.48(syst) +/- 1.14(lumi) pb, where the first uncertainty is statistical and the second reflects all systematic effects apart from that arising from the luminosity, which is given as the third uncertainty. Differential cross-sections are presented as functions of the Z-boson rapidity and of the angular variable phi*, which is related to the Z-boson transverse momentum.

引用

页码：1 / 21

页数：21

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