Measurement of the mass difference between top and antitop quarks

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 01 Jun 2012Embargo end date: 01 Jan 2012 Italy, United Kingdom, Germany, Spain, Italy, Italy, Italy, Italy, Germany, Italy, Spain, Italy, United States, Italy, Belgium, Italy, United Kingdom, Italy, United Kingdom, Italy, Italy, Italy, Italy, United States, Portugal, United Kingdom, Italy, Italy, Italy, Switzerland, Italy, Italy, United Kingdom, United Kingdom, Belgium, Italy, Italy, France, France, Greece, Belgium, Italy, Italy, United Kingdom, Italy, Italy, Italy, Spain, Turkey, Croatia, Brazil, France English Publisher:American Physical Society (APS)Journal:Physical Review D, volume 87 (issn: 1550-7998, eissn: 1550-2368,

Copyright policy )Funded by:SNSF | Search for the Higgs boso..., EC | TAUKITFORNEWPHYSICS, SNSF | High pT Physics with CMS ...

Authors: Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; +193 Authors

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Eroe, J.; Fabjan, C.; Friedl, M.; Fruehwirth, R.; Ghete, V. M.; Hammer, J.; Hoermann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Krammer, M.; Liko, D.; Mikulec, I.; Pernicka, M.; Rahbaran, B.; Rohringer, C.; Rohringer, H.; Schoefbeck, R.; Strauss, J.; Taurok, A.; Teischinger, F.; Wagner, P.; Waltenberger, W.; Walzel, G.; Widl, E.; Wulz, C.; -E.; Mossolov, V.; Shumeiko, N.; Gonzalez, J. Suarez; Bansal, S.; Cerny, K.; Cornelis, T.; De Wolf, E. A.; Janssen, X.; Luyckx, S.; Maes, T.; Mucibello, L.; Ochesanu; S.; Roland, B.; Rougny, R.; Selvaggi, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Van Spilbeeck, A.; Blekman, F.; Blyweert, S.; D'Hondt, J.; Suarez, R. Gonzalez; Kalogeropoulos, A.; Maes, M.; Olbrechts, A.; Van Doninck, W.; Van Mulders, P.; Van Onsem, G. P.; Villella, I.; Charaf, O.; Clerbaux, B.; De Lentdecker, G.; Dero, V.; Gay, A. P. R.; Hreus, T.; Leonard, A.; Marage, P. E.; Reis, T.; Thomas; L.; Vander Velde, C.; Vanlaer, P.; Adler, V.; Beernaert, K.; Cimmino, A.; Costantini, S.; Garcia, G.; Grunewald, M.; Klein, B.; Lellouch, J.; Marinov, A.; Mccartin, J.; Rios, A.; A. Ocampo; Ryckbosch, D.; Strobbe, N.; Thyssen, F.; Tytgat; M.; Vanelderen, L.; Verwilligen, P.; Walsh, S.; Yazgan, E.; Zaganidis, N.; Basegmez, S.; Bruno, G.; Ceard, L.; Delaere, C.; du Pree, T.; Favart, D.; Forthomme, L.; Giammanco, A.; Hollar, J.; Lemaitre, V.; Liao, J.; Militaru; O.; Nuttens, C.; Pagano, D.; Pin, A.; Piotrzkowski, K.; Schul, N.; Beliy, N.; Caebergs, T.; Daubie, E.; Hammad, G.; H.; Alves, G. A.; Correa Martins Junior, M.; De Jesus Damiao; D.; Martins, T.; Pol, M. E.; Souza, M. H. G.; Alda Junior; W. L.; Carvalho, W.; Custodio, A.; Da Costa, E. M.; De; Oliveira Martins, C.; Fonseca De Souza, S.; Matos Figueiredo, D.; Mundim, L.; Nogima, H.; Oguri, V.; Prado Da Silva, W. L.; Santoro, A.; Silva Do Amaral, S. M.; Soares Jorge, L.; Sznajder, A.; Anjos, T. S.; Bernardes, C. A.; Dias, F. A.; Tomei, T. R. Fernandez Perez; Gregores, E. M.; Lagana, C.; Marinho, F.; Mercadante, P. G.; Novaes, S. F.; Padula, Sandra; S.; Genchev, V.; Iaydjiev, P.; Piperov, S.; Rodozov, M.; Stoykova, S.; Sultanov, G.; Tcholakov, V.; Trayanov, R.; Vutova, M.; Dimitrov, A.; Hadjiiska, R.; Kozhuharov, V.; Litov, L.; Pavlov, B.; Petkov, P.; Bian, J. G.; Chen, G. M.; Chen, H. S.; Jiang, C. H.; Liang, D.; Liang, S.; Meng; X.; Tao, J.; Wang, J.; Wang, J.; Wang, X.; Wang, Z.; Xiao, H.; Xu, M.; Zang, J.; Zhang, Z.; Asawatangtrakuldee; C.; Ban, Y.; Guo, S.; Guo, Y.; Li, W.; Liu, S.; Mao; Y.; Qian, S. J.;

doi: 10.1103/physrevd.87.052013 , 10.1007/jhep06(2012)109 , 10.48550/arxiv.1204.2807

arXiv: 1204.2807

Measurement of the mass difference between top and antitop quarks

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Abstract

Abstract A measurement of the mass difference between the top and the antitop quark (Δm t = m t − $ {m_{{\overline t }}} $ ) is performed using events with a muon or an electron and at least four jets in the final state. The analysis is based on data collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.96±0.11 fb−1, and yields the value of Δm t = −0.44±0.46 (stat.)±0.27 (syst.) GeV. This result is consistent with equality of particle and antiparticle masses required by CPT invariance, and provides a significantly improved precision relative to existing measurements.

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Italy, United Kingdom, Germany, Spain, Italy, Italy, Italy, Italy, Germany, Italy, Spain, Italy, United States, Italy, Belgium, Italy, United Kingdom, Italy, United Kingdom, Italy, Italy, Italy, Italy, United States, Portugal, United Kingdom, Italy, Italy, Italy, Switzerland, Italy, Italy, United Kingdom, United Kingdom, Belgium, Italy, Italy, France, France, Greece, Belgium, Italy, Italy, United Kingdom, Italy, Italy, Italy, Spain, Turkey, Croatia, Brazil, France

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Alabama Agricultural and Mechanical University
United States
Chinese Academy of Sciences
China (People's Republic of)
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Czech Republic
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Keywords

550, PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], info:eu-repo/classification/ddc/530, proton antiproton collision, Fisica delle particelle, p p: interaction, Hadron-Hadron Scattering; Nuclear and High Energy Physics, high energy collider; LHC; CMS; top quark, CDF FERMILAB, CMS, Physics, CPT VIOLATION; top antitop; CDF, ddc:530, collisions, 001, lepton: charge, CERN LHC Coll, Physique des particules élémentaires, PARTICLE PHYSICS, top: pair production, FERMILAB TEVATRON COLLIDER, data analysis method, COLLISIONS, Nuclear and High Energy Physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physique, chimie, mathématiques & sciences de la terre, proton antiproton collisions; FERMILAB TEVATRON COLLIDER; Top quark properties, final state: ((n)jet lepton), Hadron-Hadron Scattering;, FOS: Physical sciences, Hadron-hadron scattering, 530, HADRON-HADRON SCATTERING; LHC; CMS; HEP, Physical, chemical, mathematical & earth Sciences, top quark mass, mass difference: (top anti-top): measured, invariance: CPT, ddc:500.2, experimental result, Hadron-Hadron Scattering, CPT VIOLATION; PHYSICS; MODEL; QCD, Physique, Top quark properties, 500, Física, LARGE HADRON COLLIDER, top: ma, anti-top: ma, 500.2, ddc: ddc:500.2, ddc: ddc:530

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