Measurement of the Effective Weak Mixing Angle in pp[over ¯]→Z/γ^{*}→ℓ^{+}ℓ^{-} Events

. 2018 Jun 15 ; 120 (24) : 241802.

Status PubMed-not-MEDLINE Jazyk angličtina Země Spojené státy americké Médium print

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/pmid29956986

We present a measurement of the effective weak mixing angle parameter sin^{2}θ_{eff}^{ℓ} in pp[over ¯]→Z/γ^{*}→μ^{+}μ^{-} events at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at the Fermilab Tevatron Collider and corresponding to 8.6 fb^{-1} of integrated luminosity. The measured value of sin^{2}θ_{eff}^{ℓ}[μμ]=0.23016±0.00064 is further combined with the result from the D0 measurement in pp[over ¯]→Z/γ^{*}→e^{+}e^{-} events, resulting in sin^{2}θ_{eff}^{ℓ}[comb]=0.23095±0.00040. This combined result is the most precise measurement from a single experiment at a hadron collider and is the most precise determination using the coupling of the Z/γ^{*} to light quarks.

2 Physikalisches Institut Georg August Universität Göttingen 37073 Göttingen Germany

3 Physikalisches Institut A RWTH Aachen University 52056 Aachen Germany

Brookhaven National Laboratory Upton New York 11973 USA

Brown University Providence Rhode Island 02912 USA

CEA Saclay Irfu SPP F 91191 Gif Sur Yvette Cedex France

Charles University Faculty of Mathematics and Physics Center for Particle Physics 116 36 Prague 1 Czech Republic

CINVESTAV Mexico City 07360 Mexico

CPPM Aix Marseille Université CNRS IN2P3 F 13288 Marseille Cedex 09 France

Czech Technical University Prague 116 36 Prague 6 Czech Republic

Delhi University Delhi 110 007 India

Fermi National Accelerator Laboratory Batavia Illinois 60510 USA

Florida State University Tallahassee Florida 32306 USA

Imperial College London London SW7 2AZ United Kingdom

Indiana University Bloomington Indiana 47405 USA

Institució Catalana de Recerca i Estudis Avançats Spain

Institut für Physik Universität Mainz 55099 Mainz Germany

Institute for High Energy Physics Protvino Moscow region 142281 Russia

Institute for Theoretical and Experimental Physics Moscow 117259 Russia

Institute of Physics Academy of Sciences of the Czech Republic 182 21 Prague Czech Republic

Iowa State University Ames Iowa 50011 USA

IPHC Université de Strasbourg CNRS IN2P3 F 67037 Strasbourg France

IPNL Université Lyon 1 CNRS IN2P3 F 69622 Villeurbanne Cedex France and Université de Lyon F 69361 Lyon CEDEX 07 France

Joint Institute for Nuclear Research Dubna 141980 Russia

Korea Detector Laboratory Korea University Seoul 02841 Korea

LAFEX Centro Brasileiro de Pesquisas Físicas Rio de Janeiro Rio de Janeiro 22290 Brazil

LAL Univ Paris Sud CNRS IN2P3 Université Paris Saclay F 91898 Orsay Cedex France

Lancaster University Lancaster LA1 4YB United Kingdom

Langston University Langston Oklahoma 73050 USA

Louisiana Tech University Ruston Louisiana 71272 USA

LPC Université Blaise Pascal CNRS IN2P3 Clermont F 63178 Aubière Cedex France

LPNHE Universités Paris 6 and 7 CNRS IN2P3 F 75005 Paris France

LPSC Université Joseph Fourier Grenoble 1 CNRS IN2P3 Institut National Polytechnique de Grenoble F 38026 Grenoble Cedex France

Ludwig Maximilians Universität München 80539 München Germany

Michigan State University East Lansing Michigan 48824 USA

Moscow State University Moscow 119991 Russia

Nikhef Science Park 1098 XG Amsterdam Netherlands

Northeastern University Boston Massachusetts 02115 USA

Northern Illinois University DeKalb Illinois 60115 USA

Northwestern University Evanston Illinois 60208 USA

Oklahoma State University Stillwater Oklahoma 74078 USA

Oregon State University Corvallis Oregon 97331 USA

Panjab University Chandigarh 160014 India

Petersburg Nuclear Physics Institute St Petersburg 188300 Russia

Physikalisches Institut Universität Freiburg 79085 Freiburg Germany

Princeton University Princeton New Jersey 08544 USA

Purdue University Calumet Hammond Indiana 46323 USA

Radboud University Nijmegen 6525 AJ Nijmegen Netherlands

Rice University Houston Texas 77005 USA

Rutgers University Piscataway New Jersey 08855 USA

Southern Methodist University Dallas Texas 75275 USA

State University of New York Buffalo New York 14260 USA

State University of New York Stony Brook New York 11794 USA

Taras Shevchenko National University of Kyiv Kiev 01601 Ukraine

Tata Institute of Fundamental Research Mumbai 400 005 India

The University of Manchester Manchester M13 9PL United Kingdom

Universidad de los Andes Bogotá 111711 Colombia

Universidad San Francisco de Quito Quito 170157 Ecuador

Universidade do Estado do Rio de Janeiro Rio de Janeiro Rio de Janeiro 20550 Brazil

Universidade Federal do ABC Santo André São Paulo 09210 Brazil

University College Dublin Dublin 4 Ireland

University of Arizona Tucson Arizona 85721 USA

University of California Riverside Riverside California 92521 USA

University of Illinois at Chicago Chicago Illinois 60607 USA

University of Kansas Lawrence Kansas 66045 USA

University of Michigan Ann Arbor Michigan 48109 USA

University of Mississippi University Mississippi 38677 USA

University of Nebraska Lincoln Nebraska 68588 USA

University of Notre Dame Notre Dame Indiana 46556 USA

University of Oklahoma Norman Oklahoma 73019 USA

University of Rochester Rochester New York 14627 USA

University of Science and Technology of China Hefei 230026 People's Republic of China

University of Texas Arlington Texas 76019 USA

University of Virginia Charlottesville Virginia 22904 USA

University of Washington Seattle Washington 98195 USA

Uppsala University 751 05 Uppsala Sweden

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