Abstract
We compute the top quark right coupling in the aligned two-Higgs-doublet model. In the Standard Model the real part of this coupling is dominated by QCD-gluon-exchange diagram, but the imaginary part, instead, is purely electroweak at one loop. Within this model we show that values for the imaginary part of the coupling up to one order of magnitude larger than the electroweak prediction can be obtained. For the real part of the electroweak contribution we find that it can be of the order of 2 × 10−4. We also present detailed results of the one loop analytical computation.
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References
M. Selvaggi, Perspectives for Top quark physics at High-Luminosity LHC, PoS(TOP2015)054 [arXiv:1512.04807] [INSPIRE].
W. Barletta et al., Working Group Report: Hadron Colliders, arXiv:1310.0290 [INSPIRE].
Particle Data Group collaboration, C. Patrignani et al., Review of Particle Physics, Chin. Phys. C 40 (2016) 100001 [INSPIRE].
G.A. González-Sprinberg, R. Martinez and J. Vidal, Top quark tensor couplings, JHEP 07 (2011) 094 [Erratum ibid. 05 (2013) 117] [arXiv:1105.5601] [INSPIRE].
L. Duarte, G.A. González-Sprinberg and J. Vidal, Top quark anomalous tensor couplings in the two-Higgs-doublet models, JHEP 11 (2013) 114 [arXiv:1308.3652] [INSPIRE].
W. Bernreuther, P. Gonzalez and M. Wiebusch, The Top Quark Decay Vertex in Standard Model Extensions, Eur. Phys. J. C 60 (2009) 197 [arXiv:0812.1643] [INSPIRE].
M. Moreno Llácer, Search for CP violation in single top quark events with the ATLAS detector at LHC, Ph.D. Thesis, Valencia U., IFIC (2014) [INSPIRE].
G.A. González-Sprinberg and J. Vidal, The top quark right coupling in the tbW-vertex, Eur. Phys. J. C 75 (2015) 615 [arXiv:1510.02153] [INSPIRE].
CDF collaboration, F. Abe et al., Observation of top quark production in \( \overline{p}p \) collisions, Phys. Rev. Lett. 74 (1995) 2626 [hep-ex/9503002] [INSPIRE].
D0 collaboration, S. Abachi et al., Observation of the top quark, Phys. Rev. Lett. 74 (1995) 2632 [hep-ex/9503003] [INSPIRE].
C. Deterre, W helicity and constraints on the W tb vertex at the Tevatron, Nuovo Cim. C 035N3 (2012) 125 [arXiv:1203.6802] [INSPIRE].
D0 collaboration, V.M. Abazov et al., Search for anomalous W tb couplings in single top quark production in \( p\overline{p} \) collisions at \( \sqrt{s}=1.96 \) TeV, Phys. Lett. B 708 (2012) 21 [arXiv:1110.4592] [INSPIRE].
D0 collaboration, V.M. Abazov et al., Search for anomalous Wtb couplings in single top quark production, Phys. Rev. Lett. 101 (2008) 221801 [arXiv:0807.1692] [INSPIRE].
W. Bernreuther, Top quark physics at the LHC, J. Phys. G 35 (2008) 083001 [arXiv:0805.1333] [INSPIRE].
F.-P. Schilling, Top Quark Physics at the LHC: A Review of the First Two Years, Int. J. Mod. Phys. A 27 (2012) 1230016 [arXiv:1206.4484] [INSPIRE].
C. Bernardo et al., Studying the W tb vertex structure using recent LHC results, Phys. Rev. D 90 (2014) 113007 [arXiv:1408.7063] [INSPIRE].
R. Hawkings, Top quark physics at the LHC, Compt. Rendus Phys. 16 (2015) 424.
M. Cristinziani and M. Mulders, Top-quark physics at the Large Hadron Collider, arXiv:1606.00327 [INSPIRE].
ATLAS, CMS collaborations, Measurements of new physics in top quark decay at LHC, J. Phys. Conf. Ser. 452 (2013) 012011 [INSPIRE].
ATLAS collaboration, Search for New Physics with Top quarks in ATLAS at 8 TeV (tb, tt, vector-like quarks), in Proceedings, 20th International Conference on Particles and Nuclei (PANIC 14), Hamburg, Germany, 24-29 August 2014, pg. 579-582 [INSPIRE].
D. Bardhan, G. Bhattacharyya, D. Ghosh, M. Patra and S. Raychaudhuri, Detailed analysis of flavor-changing decays of top quarks as a probe of new physics at the LHC, Phys. Rev. D 94 (2016) 015026 [arXiv:1601.04165] [INSPIRE].
W. Bernreuther, D. Heisler and Z.-G. Si, A set of top quark spin correlation and polarization observables for the LHC: Standard Model predictions and new physics contributions, JHEP 12 (2015) 026 [arXiv:1508.05271] [INSPIRE].
J.A. Aguilar-Saavedra and J. Bernabeu, W polarisation beyond helicity fractions in top quark decays, Nucl. Phys. B 840 (2010) 349 [arXiv:1005.5382] [INSPIRE].
J. Drobnak, S. Fajfer and J.F. Kamenik, New physics in t → bW decay at next-to-leading order in QCD, Phys. Rev. D 82 (2010) 114008 [arXiv:1010.2402] [INSPIRE].
S.D. Rindani and P. Sharma, Probing anomalous tbW couplings in single-top production using top polarization at the Large Hadron Collider, JHEP 11 (2011) 082 [arXiv:1107.2597] [INSPIRE].
A. Prasath V, R.M. Godbole and S.D. Rindani, Longitudinal top polarisation measurement and anomalous W tb coupling, Eur. Phys. J. C 75 (2015) 402 [arXiv:1405.1264] [INSPIRE].
Q.-H. Cao, B. Yan, J.-H. Yu and C. Zhang, A General Analysis of Wtb anomalous Couplings, arXiv:1504.03785 [INSPIRE].
Z. Hioki and K. Ohkuma, Full analysis of general non-standard tbW couplings, Phys. Lett. B 752 (2016) 128 [arXiv:1511.03437] [INSPIRE].
R. Gaitan, E.A. Garces, J.H.M. de Oca and R. Martinez, Top quark Chromoelectric and Chromomagnetic Dipole Moments in a Two Higgs Doublet Model with CP-violation, Phys. Rev. D 92 (2015) 094025 [arXiv:1505.04168] [INSPIRE].
J.A. Aguilar-Saavedra, J. Carvalho, N.F. Castro, F. Veloso and A. Onofre, Probing anomalous Wtb couplings in top pair decays, Eur. Phys. J. C 50 (2007) 519 [hep-ph/0605190] [INSPIRE].
J.A. Aguilar-Saavedra, J. Carvalho, N.F. Castro, A. Onofre and F. Veloso, ATLAS sensitivity to Wtb anomalous couplings in top quark decays, Eur. Phys. J. C 53 (2008) 689 [arXiv:0705.3041] [INSPIRE].
G.L. Kane, G.A. Ladinsky and C.P. Yuan, Using the Top Quark for Testing Standard Model Polarization and CP Predictions, Phys. Rev. D 45 (1992) 124 [INSPIRE].
B. Lampe, Forward-backward asymmetry in top quark semileptonic decay, Nucl. Phys. B 454 (1995) 506 [INSPIRE].
F. del Aguila and J.A. Aguilar-Saavedra, Precise determination of the Wtb couplings at CERN LHC, Phys. Rev. D 67 (2003) 014009 [hep-ph/0208171] [INSPIRE].
M. Jezabek, Top quark physics, Nucl. Phys. Proc. Suppl. 37B (1994) 197 [hep-ph/9406411] [INSPIRE].
M. Jezabek and J.H. Kuhn, V-A tests through leptons from polarized top quarks, Phys. Lett. B 329 (1994) 317 [hep-ph/9403366] [INSPIRE].
B. Grzadkowski and Z. Hioki, New hints for testing anomalous top quark interactions at future linear colliders, Phys. Lett. B 476 (2000) 87 [hep-ph/9911505] [INSPIRE].
R.M. Godbole, S.D. Rindani and R.K. Singh, Lepton distribution as a probe of new physics in production and decay of the t quark and its polarization, JHEP 12 (2006) 021 [hep-ph/0605100] [INSPIRE].
T. Stelzer and S. Willenbrock, Spin correlation in top quark production at hadron colliders, Phys. Lett. B 374 (1996) 169 [hep-ph/9512292] [INSPIRE].
G. Mahlon and S.J. Parke, Angular correlations in top quark pair production and decay at hadron colliders, Phys. Rev. D 53 (1996) 4886 [hep-ph/9512264] [INSPIRE].
ATLAS collaboration, Measurement of the W boson polarization in top quark decays with the ATLAS detector, JHEP 06 (2012) 088 [arXiv:1205.2484] [INSPIRE].
B. Grzadkowski and M. Misiak, Anomalous Wtb coupling effects in the weak radiative B-meson decay, Phys. Rev. D 78 (2008) 077501 [Erratum ibid. D 84 (2011) 059903] [arXiv:0802.1413] [INSPIRE].
T.D. Lee, A Theory of Spontaneous T Violation, Phys. Rev. D 8 (1973) 1226 [INSPIRE].
G.C. Branco, P.M. Ferreira, L. Lavoura, M.N. Rebelo, M. Sher and J.P. Silva, Theory and phenomenology of two-Higgs-doublet models, Phys. Rept. 516 (2012) 1 [arXiv:1106.0034] [INSPIRE].
A. Pich and P. Tuzon, Yukawa Alignment in the Two-Higgs-Doublet Model, Phys. Rev. D 80 (2009) 091702 [arXiv:0908.1554] [INSPIRE].
M. Jung, A. Pich and P. Tuzon, Charged-Higgs phenomenology in the Aligned two-Higgs-doublet model, JHEP 11 (2010) 003 [arXiv:1006.0470] [INSPIRE].
M. Jung, X.-Q. Li and A. Pich, Exclusive radiative B-meson decays within the aligned two-Higgs-doublet model, JHEP 10 (2012) 063 [arXiv:1208.1251] [INSPIRE].
ATLAS, CMS collaborations, Charged Higgs boson searches at the LHC, Nucl. Part. Phys. Proc. 260 (2015) 216 [INSPIRE].
A. Celis, V. Ilisie and A. Pich, Towards a general analysis of LHC data within two-Higgs-doublet models, JHEP 12 (2013) 095 [arXiv:1310.7941] [INSPIRE].
W. Buchmüller and D. Wyler, Effective Lagrangian Analysis of New Interactions and Flavor Conservation, Nucl. Phys. B 268 (1986) 621 [INSPIRE].
J.A. Aguilar-Saavedra, A minimal set of top anomalous couplings, Nucl. Phys. B 812 (2009) 181 [arXiv:0811.3842] [INSPIRE].
CDF collaboration, T. Aaltonen et al., Search for a Higgs Boson in the Diphoton Final State in \( p\overline{p} \) Collisions at \( \sqrt{s}=1.96 \) TeV, Phys. Rev. Lett. 108 (2012) 011801 [arXiv:1109.4427] [INSPIRE].
D0 collaboration, V.M. Abazov et al., Search for the standard model and a fermiophobic Higgs boson in diphoton final states, Phys. Rev. Lett. 107 (2011) 151801 [arXiv:1107.4587] [INSPIRE].
LEP, DELPHI, OPAL, ALEPH, L3 collaborations, G. Abbiendi et al., Search for Charged Higgs bosons: Combined Results Using LEP Data, Eur. Phys. J. C 73 (2013) 2463 [arXiv:1301.6065] [INSPIRE].
J.F. Gunion, H.E. Haber, G.L. Kane and S. Dawson, The Higgs Hunter’s Guide, Front. Phys. 80 (2000) 1 [INSPIRE].
CMS collaboration, Search for a low-mass pseudoscalar Higgs boson produced in association with a \( b\overline{b} \) pair in pp collisions at \( \sqrt{s}=8 \) TeV, Phys. Lett. B 758 (2016) 296 [arXiv:1511.03610] [INSPIRE].
A. Celis, V. Ilisie and A. Pich, LHC constraints on two-Higgs doublet models, JHEP 07 (2013) 053 [arXiv:1302.4022] [INSPIRE].
H.E. Haber, G.L. Kane and T. Sterling, The Fermion Mass Scale and Possible Effects of Higgs Bosons on Experimental Observables, Nucl. Phys. B 161 (1979) 493 [INSPIRE].
L.J. Hall and M.B. Wise, Flavor changing Higgs boson couplings, Nucl. Phys. B 187 (1981) 397 [INSPIRE].
J.F. Donoghue and L.F. Li, Properties of Charged Higgs Bosons, Phys. Rev. D 19 (1979) 945 [INSPIRE].
A. Arhrib and A. Jueid, tbW Anomalous Couplings in the Two Higgs Doublet Model, JHEP 08 (2016) 082 [arXiv:1606.05270] [INSPIRE].
T. Aushev et al., Physics at Super B Factory, arXiv:1002.5012 [INSPIRE].
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Ayala, C., González-Sprinberg, G.A., Martinez, R. et al. The top right coupling in the aligned two-Higgs-doublet model. J. High Energ. Phys. 2017, 128 (2017). https://doi.org/10.1007/JHEP03(2017)128
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DOI: https://doi.org/10.1007/JHEP03(2017)128