Measurement of the mass of the top quark in decays with a J/ψ meson in pp collisions 8 Tev

被引：6

作者：

Khachatryan, V. ^{[1
]}

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

Tumasyan, A. ^{[1
]}

Adam, W. ^{[2
]}

Asilar, E. ^{[2
]}

Bergauer, T. ^{[2
]}

Brandstetter, J. ^{[2
]}

Brondolin, E. ^{[2
]}

Dragicevic, M. ^{[2
]}

Eroe, J. ^{[2
]}

Flechl, M. ^{[2
]}

Friedl, M. ^{[2
]}

Fruehwirth, R. ^{[2
,196
]}

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

Hartl, C. ^{[2
]}

Hoermann, N. ^{[2
]}

Hrubec, J. ^{[2
]}

Jeitler, M. ^{[2
,196
]}

Koenig, A. ^{[2
]}

Kraetschmer, I. ^{[2
]}

Liko, D. ^{[2
]}

Matsushita, T. ^{[2
]}

Mikulec, I. ^{[2
]}

Rabady, D. ^{[2
]}

Rad, N. ^{[2
]}

Rahbaran, B. ^{[2
]}

Rohringer, H. ^{[2
]}

Schieck, J. ^{[2
,196
]}

Strauss, J. ^{[2
]}

Treberer-Treberspurg, W. ^{[2
]}

Waltenberger, W. ^{[2
]}

Wulz, C. -E. ^{[2
,196
]}

Mossolov, V. ^{[3
]}

Shumeiko, N. ^{[3
]}

Gonzalez, J. Suarez ^{[3
]}

Alderweireldt, S. ^{[4
]}

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

Janssen, X. ^{[4
]}

Lauwers, J. ^{[4
]}

Van De Klundert, M. ^{[4
]}

Van Haevermaet, H. ^{[4
]}

Van Mechelen, P. ^{[4
]}

Van Remortel, N. ^{[4
]}

Van Spilbeeck, A. ^{[4
]}

Abu Zeid, S. ^{[5
]}

Blekman, F. ^{[5
]}

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

Daci, N. ^{[5
]}

De Bruyn, I. ^{[5
]}

Deroover, K. ^{[5
]}

机构：

[1] Yerevan Phys Inst, Yerevan, Armenia

[2] OeAW, Inst Hochenergiephys, Vienna, Austria

[3] Natl Ctr Particle & High Energy Phys, 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, Belgium

[9] Univ Mons, Mons, Belgium

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

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

[12] Univ Estadual Paulista, Sao Paulo, Brazil

[13] Univ Fed ABC, Sao Paulo, Brazil

[14] Inst Nucl Energy Res, Sofia, Bulgaria

[15] Univ Sofia, Sofia, Bulgaria

[16] Beihang Univ, Beijing, Peoples R China

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

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

[19] Univ Los Andes, Bogota, Colombia

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

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

[22] Inst Rudjer Boskov, Zagreb, Croatia

[23] Univ Cyprus, Nicosia, Cyprus

[24] Charles Univ Prague, Prague, Czech Republic

[25] Univ San Francisco Quito, Quito, Ecuador

[26] Acad Sci Res & Technol, Egyptian Network High Energy Phys, Cairo, Egypt

[27] NICPB, Tallinn, Estonia

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

[29] Helsinki Inst Phys, Helsinki, Finland

[30] Lappeenranta Univ Technol, Lappeenranta, Finland

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

[32] CNRS, IN2P3, Ecole Polytech, Lab Leprince Ringuet, Paris, France

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

[34] CNRS, IN2P3, Inst Natl Phys Nucl & Phys Particules, Ctr Calcul, Villeurbanne, France

[35] Univ Claude Bernard Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, Villeurbanne, France

[36] Georgian Tech Univ, Tbilisi, Georgia

[37] Tbilisi State Univ, Tbilisi, Georgia

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

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

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

[41] Deutsch Elekt Synchrotron, Hamburg, Germany

[42] Univ Hamburg, Hamburg, Germany

[43] Inst Expt Kernphys, Karlsruhe, Germany

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

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

[46] Univ Ioannina, Ioannina, Greece

[47] Eotvos Lorand Univ, MTA ELTE Lendulet CMS Particle & Nucl Phys Grp, Budapest, Hungary

[48] Wigner Res Ctr Phys, Budapest, Hungary

[49] Inst Nucl Res ATOMKI, Debrecen, Hungary

[50] Univ Debrecen, Debrecen, Hungary

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 12期

基金：

芬兰科学院; 美国国家科学基金会; 奥地利科学基金会; 欧洲研究理事会; 巴西圣保罗研究基金会;

关键词：

Hadron-Hadron scattering (experiments); Top physics; LHC;

D O I：

10.1007/JHEP12(2016)123

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：

A first measurement of the top quark mass in the decay channel t -> (W -> l nu)(b -> J/psi + X -> mu(+) + mu(-) + X) is presented. The analysis uses events selected from the proton-proton collisions recorded by the CMS detector at the LHC at a center-of-mass energy of 8TeV. The data correspond to an integrated luminosity of 19.7 fb(-1), with 666 t (t) over bar and single top quark candidate events containing a reconstructed J/psi candidate decaying into an oppositely-charged muon pair. The mass of the (J/psi + l) system, where l is an electron or a muon from W boson decay, is used to extract a top quark mass of 173.5 +/- 3.0 (stat) +/- 0.9 (syst) GeV.

引用

页数：39

共 50 条

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Adomeit, S.
Adye, T.
Affolder, A. A.
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Ahlen, S. P.
Ahmadov, F.
Aielli, G.
Akerstedt, H.
Akesson, T. P. A.
Akimov, A. V.
Alberghi, G. L.
Albert, J.
Albrand, S.
Alconada Verzini, M. J.
Aleksa, M.
Aleksandrov, I. N.
Alexa, C.
Alexander, G.
Alexopoulos, T.
Alhroob, M.
Ali, B.
Aliev, M.
Alimonti, G.
Alison, J.
Alkire, S. P.
Allbrooke, B. M. M.
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Allport, P. P.
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