Precision measurement of the Z boson invisible width in pp collisions √s=13 TeV

被引：3

作者：

Tumasyan, A. ^{[1
,203
]}

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
,111
,204
]}

Jeitler, M. ^{[2
,111
,204
]}

Krammer, N. ^{[2
]}

Lechner, L. ^{[2
]}

Liko, D. ^{[2
]}

Mikulec, I. ^{[2
]}

Paulitsch, P. ^{[2
]}

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

Schieck, J. ^{[2
,111
,204
]}

Schofbeck, R. ^{[2
]}

Schwarz, D. ^{[2
]}

Templ, S. ^{[2
]}

Waltenberger, W. ^{[2
]}

Wulz, C. -E. ^{[2
,111
,204
]}

Darwish, M. R. ^{[3
,205
]}

De Wolf, E. A. ^{[3
]}

Janssen, T. ^{[3
]}

Kello, T. ^{[3
,206
]}

Lelek, A. ^{[3
]}

Sfar, H. Rejeb ^{[3
]}

Van Mechelen, P. ^{[3
]}

Van Putte, S. ^{[3
]}

Van Remortel, N. ^{[3
]}

Blekman, F. ^{[4
]}

Bols, E. S. ^{[4
]}

D'Hondt, J. ^{[4
]}

Delcourt, M. ^{[4
]}

El Faham, H. ^{[4
]}

Lowette, S. ^{[4
]}

Moortgat, S. ^{[4
]}

Morton, A. ^{[4
]}

Mueller, D. ^{[4
]}

Sahasransu, A. R. ^{[4
]}

Tavernier, S. ^{[4
]}

Van Doninck, W. ^{[4
]}

Beghin, D. ^{[5
]}

Bilin, B. ^{[5
]}

Clerbaux, B. ^{[5
]}

De Lentdecker, G. ^{[5
]}

Favart, L. ^{[5
]}

Grebenyuk, A. ^{[5
]}

Kalsi, A. K. ^{[5
]}

机构：

[1] Yerevan Phys Inst, Yerevan, Armenia

[2] Inst Hochenergiephys, Vienna, Austria

[3] Univ Antwerp, Antwerp, Belgium

[4] Vrije Univ Brussel, Brussels, Belgium

[5] Univ Libre Bruxelles, Brussels, Belgium

[6] Univ Ghent, Ghent, Belgium

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

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

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

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

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

[12] Univ Sofia, Sofia, Bulgaria

[13] Beihang Univ, Beijing, Peoples R China

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

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

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

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

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

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

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

[21] Univ Los Andes, Bogota, Colombia

[22] Univ Antioquia, Medellin, Colombia

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

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

[25] Inst Rudjer Boskovic, Zagreb, Croatia

[26] Univ Cyprus, Nicosia, Cyprus

[27] Charles Univ Prague, Prague, Czech Republic

[28] Escuela Politec Nacl, Quito, Ecuador

[29] Univ San Francisco Quito, Quito, Ecuador

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

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

[32] NICPB, Tallinn, Estonia

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

[34] Helsinki Inst Phys, Helsinki, Finland

[35] Lappeenranta Lahti Univ Technol, Lappeenranta, Finland

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

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

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

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

[40] Georgian Tech Univ, Tbilisi, Georgia

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

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

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

[44] DESY, Hamburg, Germany

[45] Univ Hamburg, Hamburg, Germany

[46] Karlsruher Inst Technol, Karlsruhe, Germany

[47] NCSR Demokritos, INPP, Aghia Paraskevi, Greece

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

[49] Natl Tech Univ Athens, Athens, Greece

[50] Univ Ioannina, Ioannina, Greece

来源：

PHYSICS LETTERS B | 2023年 / 842卷

关键词：

CMS; Z boson; SINGLE-PHOTON PRODUCTION;

D O I：

10.1016/j.physletb.2022.137563

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A precise measurement of the invisible width of the Z boson produced in proton-proton collisions at a center-of-mass energy of 13 TeV is presented using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36.3 fb-1. The result is obtained from a simultaneous fit to kinematic distributions for two data samples of Z boson plus jets: one dominated by Z boson decays to invisible particles and the other by Z boson decays to muon and electron pairs. The invisible width is measured to be 523 & PLUSMN; 3 (stat) & PLUSMN; 16 (syst) MeV. This result is the first precise measurement of the invisible width of the Z boson at a hadron collider, and is the single most precise direct measurement to date, competitive with the combined result of the direct measurements from the LEP experiments. & COPY; 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.

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