Measurement of the inclusive Z cross section via decays to tau pairs in pp collisions at √s=7 TeV

被引：0

作者：

Chatrchyan, S. ^{[1
]}

Khachatryan, V. ^{[1
]}

Sirunyan, A. M. ^{[1
]}

Tumasyan, A. ^{[1
]}

Adam, W. ^{[2
]}

Bergauer, T. ^{[2
]}

Dragicevic, M. ^{[2
]}

Eroe, J. ^{[2
]}

Fabjan, C. ^{[2
]}

Friedl, M. ^{[2
]}

Fruehwirth, R. ^{[2
]}

Ghete, V. M. ^{[2
]}

Hammer, J. ^{[2
,115
]}

Haensel, S. ^{[2
]}

Hoch, M. ^{[2
]}

Hoermann, N. ^{[2
]}

Hrubec, J. ^{[2
]}

Jeitler, M. ^{[2
]}

Kasieczka, G. ^{[2
]}

Kiesenhofer, W. ^{[2
]}

Krammer, M. ^{[2
]}

Liko, D. ^{[2
]}

Mikulec, I. ^{[2
]}

Pernicka, M. ^{[2
]}

Rohringer, H. ^{[2
]}

Schoefbeck, R. ^{[2
]}

Strauss, J. ^{[2
]}

Teischinger, F. ^{[2
]}

Wagner, P. ^{[2
]}

Waltenberger, W. ^{[2
]}

Walzel, G. ^{[2
]}

Widl, E. ^{[2
]}

Wulz, C. -E. ^{[2
]}

Mossolov, V. ^{[3
]}

Shumeiko, N. ^{[3
]}

Gonzalez, J. Suarez ^{[3
]}

Benucci, L. ^{[4
]}

De Wolf, E. A. ^{[4
]}

Janssen, X. ^{[4
]}

Maes, T. ^{[4
]}

Mucibello, L. ^{[4
]}

Ochesanu, S. ^{[4
]}

Roland, B. ^{[4
]}

Rougny, R. ^{[4
]}

Selvaggi, M. ^{[4
]}

Van Haevermaet, H. ^{[4
]}

Van Mechelen, P. ^{[4
]}

Van Remortel, N. ^{[4
]}

Blekman, F. ^{[5
]}

Blyweert, S. ^{[5
]}

机构：

[1] Yerevan Phys Inst, Yerevan 375036, Armenia

[2] OeAW, Inst Hochenergiephys, Vienna, Austria

[3] Natl Ctr Particle & High Energy Phys, Minsk, BELARUS

[4] Univ Antwerp, B-2020 Antwerp, Belgium

[5] Vrije Univ Brussel, Brussels, Belgium

[6] Univ Libre Bruxelles, Brussels, Belgium

[7] Univ Ghent, B-9000 Ghent, Belgium

[8] Catholic Univ Louvain, B-1348 Louvain, Belgium

[9] Univ Mons, B-7000 Mons, Belgium

[10] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[11] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil

[12] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil

[13] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria

[14] Univ Sofia, BU-1126 Sofia, Bulgaria

[15] Inst High Energy Phys, Beijing 100039, Peoples R China

[16] Peking Univ, State Key Lab Nucl Phys & Tech, Beijing 100871, Peoples R China

[17] Univ Los Andes, Bogota, Colombia

[18] Tech Univ Split, Split, Croatia

[19] Univ Split, Split, Croatia

[20] Rudjer Boskovic Inst, Zagreb, Croatia

[21] Univ Cyprus, Nicosia, Cyprus

[22] Charles Univ Prague, Prague, Czech Republic

[23] Egyptian Network High Energy Phys, Acad Sci Res & Technol Arab Republ Egypt, Cairo, Egypt

[24] NICPB, Tallinn, Estonia

[25] Univ Helsinki, Dept Phys, Helsinki, Finland

[26] Helsinki Inst Phys, Helsinki, Finland

[27] Lappeenranta Univ Technol, Lappeenranta, Finland

[28] CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, Annecy Le Vieux, France

[29] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France

[30] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[31] Univ Haute Alsace Mulhouse, Univ Strasbourg, Inst Pluridisciplinaire Hubert Curien, CNRS,IN2P3, Strasbourg, France

[32] IN2P3, Ctr Calcul, Villeurbanne, France

[33] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France

[34] Tbilisi State Univ, Inst High Energy Phys & Informatizat, GE-380086 Tbilisi, Georgia

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

[36] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany

[37] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany

[38] DESY, Hamburg, Germany

[39] Univ Hamburg, Hamburg, Germany

[40] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany

[41] Inst Nucl Phys Demokritos, Aghia Paraskevi, Greece

[42] Univ Athens, Athens, Greece

[43] Univ Ioannina, GR-45110 Ioannina, Greece

[44] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary

[45] Inst Nucl Res ATOMKI, Debrecen, Hungary

[46] Univ Debrecen, Debrecen, Hungary

[47] Panjab Univ, Chandigarh 160014, India

[48] Univ Delhi, Delhi 110007, India

[49] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India

[50] Tata Inst Fundamental Res EHEP, Bombay, Maharashtra, India

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2011年 / 08期

基金：

芬兰科学院; 巴西圣保罗研究基金会;

关键词：

Hadron-Hadron Scattering;

D O I：

10.1007/JHEP08(2011)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：

The first measurement of inclusive Z > tau(+) tau(-) production in pp collisions at the LHC is presented, in the final states mu+hadrons, e+hadrons, e-mu, and mu+mu. The data sample corresponds to an integrated luminosity of 36 pb(-1) collected with the CMS detector. The measured cross section is sigma (pp -> ZX) x B (Z -> tau(+)tau(-)) = 1.00 +/- 0.05 (stat.)+/- 0.08 (syst.) +/- 0.04 (lumi.) nb, which is in good agreement with the next-to-next-to-leading order QCD prediction and improves on previous measurements in the Z -> e(+)e(-) and mu(+)mu(-) channels. The reconstruction efficiency for hadronic T decays is determined with a precision of 7%.

引用

页数：32

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