Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in in pp collisions at √s=13 TeV

被引：0

作者：

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

Tumasyan, A. ^{[1
]}

Adam, W. ^{[2
]}

Ambrogi, F. ^{[2
]}

Bergauer, T. ^{[2
]}

Brandstetter, J. ^{[2
]}

Dragicevic, M. ^{[2
]}

Eroe, J. ^{[2
]}

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

Flechl, M. ^{[2
]}

Fruehwirth, R. ^{[2
,214
]}

Jeitler, M. ^{[2
,214
]}

Krammer, N. ^{[2
]}

Kraetschmer, I ^{[2
]}

Liko, D. ^{[2
]}

Madlener, T. ^{[2
]}

Mikulec, I ^{[2
]}

Rad, N. ^{[2
]}

Schieck, J. ^{[2
,214
]}

Schoefbeck, R. ^{[2
]}

Spanring, M. ^{[2
]}

Spitzbart, D. ^{[2
]}

Waltenberger, W. ^{[2
]}

Wulz, C-E ^{[2
,214
]}

Zarucki, M. ^{[2
]}

Drugakov, V ^{[3
]}

Mossolov, V ^{[3
]}

Gonzalez, J. Suarez ^{[3
]}

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

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

Di Croce, D. ^{[4
]}

Janssen, X. ^{[4
]}

Lelek, A. ^{[4
]}

Pieters, M. ^{[4
]}

Sfar, H. Rejeb ^{[4
]}

Van Haevermaet, H. ^{[4
]}

Van Mechelen, P. ^{[4
]}

Van Putte, S. ^{[4
]}

Van Remortel, N. ^{[4
]}

Blekman, F. ^{[5
]}

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

Chhibra, S. S. ^{[5
]}

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

De Clercq, J. ^{[5
]}

Lontkovskyi, D. ^{[5
]}

Lowette, S. ^{[5
]}

Marchesini, I ^{[5
]}

Moortgat, S. ^{[5
]}

Python, Q. ^{[5
]}

Skovpen, K. ^{[5
]}

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 Estadual Paulista, Sao Paulo, Brazil

[12] Univ Fed ABC, Sao Paulo, Brazil

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

[14] Univ Sofia, Sofia, Bulgaria

[15] Beihang Univ, Beijing, Peoples R China

[16] Tsinghua Univ, Dept Phys, 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] Zhejiang Univ, Hangzhou, Peoples R China

[20] Univ Los Andes, Bogota, Colombia

[21] Univ Antioquia, Medellin, Colombia

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

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

[24] Inst Rudjer Boskovic, Zagreb, Croatia

[25] Univ Cyprus, Nicosia, Cyprus

[26] Charles Univ Prague, Prague, Czech Republic

[27] Escuela Politec Nacl, Quito, Ecuador

[28] Univ San Francisco Quito, Quito, Ecuador

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

[30] NICPB, Tallinn, Estonia

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

[32] Helsinki Inst Phys, Helsinki, Finland

[33] Lappeenranta Univ Technol, Lappeenranta, Finland

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

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

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

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

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

[39] Georgian Tech Univ, Tbilisi, Georgia

[40] Tbilisi State 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, Inst Nucl & Particle Phys 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：

JOURNAL OF HIGH ENERGY PHYSICS | 2020年 / 06期

基金：

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

关键词：

Hadron-Hadron scattering (experiments); Top physics; CHARGE ASYMMETRY; PAIR PRODUCTION; COUPLINGS;

D O I：

10.1007/JHEP06(2020)146

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：

The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric ((d) over cap (t)) and chromomagnetic ((mu) over capt) moments have been measured using LHC pp collisions at a center-of-mass energy of 13TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb(-1) The linearized variable A(FB)((1)) is used to approximate the asymmetry. Candidate t (t) over bar events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t (t) over bar final states. The values found for the parameters are A(FB)((1)) = 0.048(-0.087)(+0.095)(stat)(-0.029)(+0.020) (syst), (mu) over cap (t) = 0.024(-0.009)(+0.013) (stat)(-0.011)(+0.016) (syst), and a limit is placed on the magnitude of vertical bar(d) over cap (t)vertical bar < 0.03 at 95% confidence level.

引用

页数：56

共 50 条

[1] Anomalous Wtb coupling and forward-backward asymmetry of top quark production at the Tevatron
Kolodziej, K.
[J]. PHYSICS LETTERS B, 2012, 710 (4-5) : 671 - 675
[2] Forward-backward asymmetry of top quark pair production
Cao, Qing-Hong
McKeen, David
Rosner, Jonathan L.
Shaughnessy, Gabe
Wagner, Carlos E. M.
[J]. PHYSICAL REVIEW D, 2010, 81 (11):
[3] Forward-Backward Asymmetry in Top-Quark Production in p(p)over-bar Collisions at √s=1.96 TeV
Aaltonen, T.
Adelman, J.
Akimoto, T.
Albrow, M. G.
Gonzalez, B. Alvarez
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Apresyan, A.
Arisawa, T.
Artikov, A.
Ashmanskas, W.
Attal, A.
Aurisano, A.
Azfar, F.
Azzurri, P.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Bartsch, V.
Bauer, G.
Beauchemin, P. -H.
Bedeschi, F.
Bednar, P.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Beringer, J.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Blair, R. E.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Boisvert, V.
Bolla, G.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
[J]. PHYSICAL REVIEW LETTERS, 2008, 101 (20)
[4] Top quark forward-backward asymmetry
Cheung, Kingman
Keung, Wai-Yee
Yuan, Tzu-Chiang
[J]. PHYSICS LETTERS B, 2009, 682 (03) : 287 - 290
[5] Measurement of the forward-backward charge asymmetry in top-quark pair production
Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
Adams, T.
Aguilo, E.
Ahn, S. H.
Ahsan, M.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Alverson, G.
Alves, G. A.
Anastasoaie, M.
Ancu, L. S.
Andeen, T.
Anderson, S.
Andrieu, B.
Anzelc, M. S.
Arnoud, Y.
Arov, M.
Arthaud, M.
Askew, A.
Asman, B.
Jesus, A. C. S. Assis
Atramentov, O.
Autermann, C.
Avila, C.
Ay, C.
Badaud, F.
Baden, A.
Bagby, L.
Baldin, B.
Bandurin, D. V.
Banerjee, S.
Banerjee, P.
Barberis, E.
Barfuss, A. -F.
Bargassa, P.
Baringer, P.
Barreto, J.
Bartlett, J. F.
Bassler, U.
Bauer, D.
Beale, S.
Bean, A.
Begalli, M.
Begel, M.
Belanger-Champagne, C.
[J]. PHYSICAL REVIEW LETTERS, 2008, 100 (14)
[6] Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \sqrt{s} $$\end{document} = 13 TeV
A. M. Sirunyan
A. Tumasyan
W. Adam
F. Ambrogi
T. Bergauer
M. Dragicevic
J. Erö
A. Escalante Del Valle
M. Flechl
R. Frühwirth
M. Jeitler
N. Krammer
I. Krätschmer
D. Liko
T. Madlener
I. Mikulec
N. Rad
J. Schieck
R. Schöfbeck
M. Spanring
W. Waltenberger
C.-E. Wulz
M. Zarucki
V. Drugakov
V. Mossolov
J. Suarez Gonzalez
M. R. Darwish
E. A. De Wolf
D. Di Croce
X. Janssen
A. Lelek
M. Pieters
H. Rejeb Sfar
H. Van Haevermaet
P. Van Mechelen
S. Van Putte
N. Van Remortel
F. Blekman
E. S. Bols
S. S. Chhibra
J. D’Hondt
J. De Clercq
D. Lontkovskyi
S. Lowette
I. Marchesini
S. Moortgat
Q. Python
S. Tavernier
W. Van Doninck
P. Van Mulders
[J]. Journal of High Energy Physics, 2020 (6)
[7] Improving the top quark forward-backward asymmetry measurement at the LHC
Bai, Yang
Han, Zhenyu
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2012, (02):
[8] Improving the top quark forward-backward asymmetry measurement at the LHC
Yang Bai
Zhenyu Han
[J]. Journal of High Energy Physics, 2012
[9] Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at √s=7 TeV with the ATLAS detector
Aad, G.
Abbott, B.
Abdallah, J.
Khalek, S. Abdel
Abdinov, O.
Aben, R.
Abi, B.
Abolins, M.
Abouzedi, O. S.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaiti, Y.
Acharya, B. S.
Adamczyk, L.
Adams, D. L.
Adelman, J.
Adomeit, S.
Adye, T.
Agatonovic-Jovin, T.
Aguiar-Saavedra, J. A.
Agustoni, M.
Ahlen, S. P.
Ahmadov, F.
Aielli, G.
Akerstedt, H.
Akesson, T. P. A.
Akimoto, G.
Akimov, A. V.
Aberghi, G. L.
Albert, J.
Albrand, S.
Alconada Verzini, M. J.
Aleksa, M.
Aleksandrov, I. N.
Alexa, C.
Alexander, G.
Alexandre, G.
Alexopoulos, T.
Alhroob, M.
Alimonti, G.
Alio, L.
Alison, J.
Allbrooke, B. M. M.
Allison, L. J.
Allport, P. P.
Almond, J.
Aloisio, A.
Alonso, A.
Alonso, F.
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2015, (09):
[10] Forward-backward asymmetry in top quark-antiquark production
Abazov, V. M.
Abbott, B.
Acharya, B. S.
Adams, M.
Adams, T.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Alverson, G.
Alves, G. A.
Aoki, M.
Arov, M.
Askew, A.
Asman, B.
Atramentov, O.
Avila, C.
BackusMayes, J.
Badaud, F.
Bagby, L.
Baldin, B.
Bandurin, D. V.
Banerjee, S.
Barberis, E.
Baringer, P.
Barreto, J.
Bartlett, J. F.
Bassler, U.
Bazterra, V.
Beale, S.
Bean, A.
Begalli, M.
Begel, M.
Belanger-Champagne, C.
Bellantoni, L.
Beri, S. B.
Bernardi, G.
Bernhard, R.
Bertram, I.
Besancon, M.
Beuselinck, R.
Bezzubov, V. A.
Bhat, P. C.
Bhatnagar, V.
Blazey, G.
Blessing, S.
Bloom, K.
Boehnlein, A.
Boline, D.
Boos, E. E.
Borissov, G.
[J]. PHYSICAL REVIEW D, 2011, 84 (11):

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