Measurement of the production cross section for Z plus b jets in proton-proton collisions at √s=13 TeV

被引：2

作者：

Tumasyan, A. ^{[1
]}

Adam, W. ^{[2
]}

Andrejkovic, J. W. ^{[2
]}

Bergauer, T. ^{[2
]}

Chatterjee, S. ^{[2
]}

Damanakis, K. ^{[2
]}

Dragicevic, M. ^{[2
]}

Del Valle, A. Escalante ^{[2
]}

Fruhwirth, R. ^{[2
,216
]}

Jeitler, M. ^{[2
,216
]}

Krammer, N. ^{[2
]}

Lechner, L. ^{[2
]}

Liko, D. ^{[2
]}

Mikulec, I ^{[2
]}

Paulitsch, P. ^{[2
]}

Pitters, F. M. ^{[2
]}

Schieck, J. ^{[2
,216
]}

Schofbeck, R. ^{[2
]}

Schwarz, D. ^{[2
]}

Templ, S. ^{[2
]}

Waltenberger, W. ^{[2
]}

Wulz, C-E ^{[2
,216
]}

Chekhovsky, V ^{[3
]}

Litomin, A. ^{[3
]}

Makarenko, V ^{[3
]}

Darwish, M. R. ^{[4
,217
]}

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

Janssen, T. ^{[4
]}

Kello, T. ^{[4
,6
]}

Lelek, A. ^{[4
]}

Sfar, H. Rejeb ^{[4
]}

Van Mechelen, P. ^{[4
]}

Van Putte, S. ^{[4
]}

Van Remortel, N. ^{[4
]}

Blekman, F. ^{[5
]}

Bols, E. S. ^{[5
]}

D'Hondt, J. ^{[5
]}

Delcourt, M. ^{[5
]}

El Faham, H. ^{[5
]}

Lowette, S. ^{[5
]}

Moortgat, S. ^{[5
]}

Morton, A. ^{[5
]}

Muller, D. ^{[5
]}

Sahasransu, A. R. ^{[5
]}

Tavernier, S. ^{[5
]}

Van Doninck, W. ^{[5
]}

Beghin, D. ^{[6
]}

Bilin, B. ^{[6
]}

Clerbaux, B. ^{[6
]}

De Lentdecker, G. ^{[6
]}

机构：

[1] Yerevan Phys Inst, Yerevan, Armenia

[2] Inst Hochenergiephys, Vienna, Austria

[3] Inst Nucl Problems, Minsk, BELARUS

[4] Univ Antwerp, Antwerp, Belgium

[5] Vrije Univ Brussel, Brussels, Belgium

[6] Univ Libre Bruxelles, Brussels, Belgium

[7] Univ Ghent, Ghent, Belgium

[8] Catholic Univ Louvain, Louvain La Neuve, Belgium

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

[10] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil

[11] Univ Fed ABC, Univ Estadual Paulista, Sao Paulo, Brazil

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

[13] Univ Sofia, Sofia, Bulgaria

[14] Beihang Univ, Beijing, Peoples R China

[15] Tsinghua Univ, Dept Phys, Beijing, Peoples R China

[16] Inst High Energy Phys, Beijing, Peoples R China

[17] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China

[18] Sun Yat Sen Univ, Guangzhou, Peoples R China

[19] Fudan Univ, Inst Modern Phys, Shanghai, Peoples R China

[20] Fudan Univ, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai, Peoples R China

[21] Zhejiang Univ, Hangzhou, Zhejiang, Peoples R China

[22] Univ Los Andes, Bogota, Colombia

[23] Univ Antioquia, Medellin, Colombia

[24] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia

[25] Univ Split, Fac Sci, Split, Croatia

[26] Inst Rudjer Boskovic, Zagreb, Croatia

[27] Univ Cyprus, Nicosia, Cyprus

[28] Charles Univ Prague, Prague, Czech Republic

[29] Escuela Politec Nacl, Quito, Ecuador

[30] Univ San Francisco Quito, Quito, Ecuador

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

[32] Fayoum Univ, Ctr High Energy Phys CHEP FU, Al Fayyum, Egypt

[33] NICPB, Tallinn, Estonia

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

[35] Helsinki Inst Phys, Helsinki, Finland

[36] Lappeenranta Univ Technol, Lappeenranta, Finland

[37] Univ Paris Saclay, IRFU, CEA, Gif Sur Yvette, France

[38] Ecole Polytech, Lab Leprince Ringuet, Inst Polytech Paris, CNRS IN2P3, Palaiseau, France

[39] Univ Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France

[40] Inst Phys 2 Infinis Lyon IP2I, Villeurbanne, France

[41] Georgian Tech Univ, Tbilisi, Georgia

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

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

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

[45] DESY, Hamburg, Germany

[46] Univ Hamburg, Hamburg, Germany

[47] Karlsruher Inst Technol, Karlsruhe, Germany

[48] NCSR Demokritos, Inst Nucl & Particle Phys INPP, Aghia Paraskevi, Greece

[49] Natl & Kapodistrian Univ Athens, Athens, Greece

[50] Natl Tech Univ Athens, Athens, Greece

来源：

PHYSICAL REVIEW D | 2022年 / 105卷 / 09期

基金：

芬兰科学院; 欧盟地平线“2020”; 俄罗斯基础研究基金会; 欧洲研究理事会; 巴西圣保罗研究基金会;

关键词：

PAIR PRODUCTION;

D O I：

10.1103/PhysRevD.105.092014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The measurement of the cross section for the production of a Z boson, decaying to dielectrons or dimuons, in association with at least one bottom quark jet is performed with proton-proton collision data at p1/4 13 TeV. The data sample corresponds to an integrated luminosity of 137 fb-1, collected by the CMS experiment at the LHC during 2016???2018. The integrated cross sections for Z?? > 1 b jet and Z?? > 2 b jets are reported for the electron, muon, and combined channels. The fiducial cross sections in the combined channel are 6.52 ??? 0.04??stat?? ??? 0.40??syst?? ??? 0.14??theo?? pb for Z?? > 1 b jet and 0.65 ??? 0.03??stat?? ??? 0.07??syst?? ??? 0.02??theo?? pb for Z?? > 2 b jets. The differential cross section distributions are measured as functions of various kinematic observables that are useful for precision tests of perturbative quantum chromodynamics predictions. The ratios of integrated and differential cross sections for Z?? > 2b jets and Z?? > 1 b jet processes are also determined. The value of the integrated cross section ratio measured in the combined channel is 0.100 ??? 0.005??stat?? ??? 0.007??syst?? ??? 0.003??theo??. All measurements are compared with predictions from various event generators.

引用

页数：34

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