Abstract
Motivated by the recent LHC Higgs data and null results in searches for any new physics, we investigate the Higgs couplings and naturalness in the littlest Higgs model with T-parity. By performing the global fit of the latest Higgs data, electroweak precise observables and R b measurements, we find that the scale f can be excluded up to 600 GeV at 2σ confidence level. The expected Higgs coupling measurements at the future collider TLEP will improve this lower limit to above 3 TeV. Besides, the top parnter mass \( {m}_{T_{+}} \) can be excluded up to 880GeV at 2σ confidence level. The future HL-LHC can constrain this mass in the region \( {m}_{T_{+}}<2.2 \) TeV corresponding to the fine-tuning being lager than 1%.
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References
F. Englert and R. Brout, Broken Symmetry and the Mass of Gauge Vector Mesons, Phys. Rev. Lett. 13 (1964) 321 [INSPIRE].
P.W. Higgs, Broken symmetries, massless particles and gauge fields, Phys. Lett. 12 (1964) 132 [INSPIRE].
P.W. Higgs, Broken Symmetries and the Masses of Gauge Bosons, Phys. Rev. Lett. 13 (1964) 508 [INSPIRE].
G.S. Guralnik, C.R. Hagen and T.W.B. Kibble, Global Conservation Laws and Massless Particles, Phys. Rev. Lett. 13 (1964) 585 [INSPIRE].
ATLAS collaboration, Combined search for the Standard Model Higgs boson using up to 4.9 fb −1 of pp collision data at \( \sqrt{s}=7 \) TeV with the ATLAS detector at the LHC, Phys. Lett. B 710 (2012) 49 [arXiv:1202.1408] [INSPIRE].
CMS collaboration, Combined results of searches for the standard model Higgs boson in pp collisions at \( \sqrt{s}=7 \) TeV, Phys. Lett. B 710 (2012) 26 [arXiv:1202.1488] [INSPIRE].
ATLAS collaboration, Coupling properties of the new Higgs-like boson observed with the ATLAS detector at the LHC, ATLAS-CONF-2012-127 (2012).
ATLAS collaboration, Updated coupling measurements of the Higgs boson with the ATLAS detector using up to 25 fb −1 of proton-proton collision data, ATLAS-CONF-2014-009 (2014).
CMS collaboration, Combination of standard model Higgs boson searches and measurements of the properties of the new boson with a mass near 125 GeV, CMS-PAS-HIG-12-045.
CMS collaboration, Precise determination of the mass of the Higgs boson and studies of the compatibility of its couplings with the standard model, CMS-PAS-HIG-14-009.
P.P. Giardino, K. Kannike, I. Masina, M. Raidal and A. Strumia, The universal Higgs fit, JHEP 05 (2014) 046 [arXiv:1303.3570] [INSPIRE].
J. Ellis and T. You, Updated Global Analysis of Higgs Couplings, JHEP 06 (2013) 103 [arXiv:1303.3879] [INSPIRE].
A. Djouadi and G. Moreau, The couplings of the Higgs boson and its CP properties from fits of the signal strengths and their ratios at the 7 + 8 TeV LHC, Eur. Phys. J. C 73 (2013) 2512 [arXiv:1303.6591] [INSPIRE].
A. Falkowski, F. Riva and A. Urbano, Higgs at last, JHEP 11 (2013) 111 [arXiv:1303.1812] [INSPIRE].
T. Alanne, S. Di Chiara and K. Tuominen, LHC Data and Aspects of New Physics, JHEP 01 (2014) 041 [arXiv:1303.3615] [INSPIRE].
C. Englert et al., Precision Measurements of Higgs Couplings: Implications for New Physics Scales, J. Phys. G 41 (2014) 113001 [arXiv:1403.7191] [INSPIRE].
J. Bernon, B. Dumont and S. Kraml, Status of Higgs couplings after Run-1 of the LHC using Lilith 1.0, arXiv:1409.1588 [INSPIRE].
Gfitter Group collaboration, M. Baak et al., The global electroweak fit at NNLO and prospects for the LHC and ILC, Eur. Phys. J. C 74 (2014) 3046 [arXiv:1407.3792] [INSPIRE].
M.V. Marono, Future prospects of Higgs Physics at CMS, arXiv:1409.1711 [INSPIRE].
J. Fan and M. Reece, A New Look at Higgs Constraints on Stops, JHEP 06 (2014) 031 [arXiv:1401.7671] [INSPIRE].
Planck collaboration, P.A.R. Ade et al., Planck 2013 results. XVI. Cosmological parameters, Astron. Astrophys. (2014) [arXiv:1303.5076] [INSPIRE].
A. Strumia and F. Vissani, Neutrino masses and mixings and. . . , hep-ph/0606054 [INSPIRE].
N. Arkani-Hamed, A.G. Cohen, E. Katz and A.E. Nelson, The Littlest Higgs, JHEP 07 (2002) 034 [hep-ph/0206021] [INSPIRE].
S. Chang, A ‘Littlest Higgs’ model with custodial SU(2) symmetry, JHEP 12 (2003) 057 [hep-ph/0306034] [INSPIRE].
T. Han, H.E. Logan, B. McElrath and L.-T. Wang, Phenomenology of the little Higgs model, Phys. Rev. D 67 (2003) 095004 [hep-ph/0301040] [INSPIRE].
M. Schmaltz and D. Tucker-Smith, Little Higgs review, Ann. Rev. Nucl. Part. Sci. 55 (2005) 229 [hep-ph/0502182] [INSPIRE].
H.-C. Cheng and I. Low, TeV symmetry and the little hierarchy problem, JHEP 09 (2003) 051 [hep-ph/0308199] [INSPIRE].
H.-C. Cheng and I. Low, Little hierarchy, little Higgses and a little symmetry, JHEP 08 (2004) 061 [hep-ph/0405243] [INSPIRE].
I. Low, T parity and the littlest Higgs, JHEP 10 (2004) 067 [hep-ph/0409025] [INSPIRE].
J. Hubisz and P. Meade, Phenomenology of the littlest Higgs with T-parity, Phys. Rev. D 71 (2005) 035016 [hep-ph/0411264] [INSPIRE].
ATLAS collaboration, Measurements of the properties of the Higgs-like boson in the four lepton decay channel with the ATLAS detector using 25 fb −1 of proton-proton collision data, ATLAS-CONF-2013-013 (2013).
ATLAS collaboration, Combined coupling measurements of the Higgs-like boson with the ATLAS detector using up to 25 fb −1 of proton-proton collision data, ATLAS-CONF-2013-034 (2013).
ATLAS collaboration, Study of the spin of the new boson with up to 25 fb −1 of ATLAS data, ATLAS-CONF-2013-040 (2013).
CMS collaboration, Combination of standard model Higgs boson searches and measurements of the properties of the new boson with a mass near 125 GeV, CMS-PAS-HIG-13-005.
CMS collaboration, Measurement of the properties of a Higgs boson in the four-lepton final state, Phys. Rev. D 89 (2014) 092007 [arXiv:1312.5353] [INSPIRE].
S. Dawson et al., Working Group Report: Higgs Boson, arXiv:1310.8361 [INSPIRE].
C. Englert et al., Precision Measurements of Higgs Couplings: Implications for New Physics Scales, J. Phys. G 41 (2014) 113001 [arXiv:1403.7191] [INSPIRE].
A. Blondel et al., Report of the ICFA Beam Dynamics Workshop ‘Accelerators for a Higgs Factory: Linear vs. Circular’ (HF2012), arXiv:1302.3318 [INSPIRE].
V.I. Telnov, Higgs factories, PoS(IHEP-LHC)018) [arXiv:1307.3893] [INSPIRE].
A. Kobakhidze, L. Wu and J. Yue, Anomalous Top-Higgs Couplings and Top Polarisation in Single Top and Higgs Associated Production at the LHC, arXiv:1406.1961 [INSPIRE].
J. Cao, C. Han, L. Wu, J.M. Yang and M. Zhang, SUSY induced top quark FCNC decay t → ch after Run I of LHC, Eur. Phys. J. C 74 (2014) 3058 [arXiv:1404.1241] [INSPIRE].
B. Yang, N. Liu and J. Han, Top quark flavor-changing neutral-current decay to a 125 GeV Higgs boson in the littlest Higgs model with T parity, Phys. Rev. D 89 (2014) 034020 [INSPIRE].
F. Simon, Higgs physics at future linear colliders — A case for precise vertexing, PoS(Vertex2013)019 [arXiv:1401.6302] [INSPIRE].
N. Liu, J. Ren and B. Yang, Next-to-leading order QCD corrections to HZW ± production at 14 TeV LHC, Phys. Lett. B 731 (2014) 70 [arXiv:1310.6192] [INSPIRE].
N. Liu, L. Wu, P.W. Wu and J.M. Yang, Complete one-loop effects of SUSY QCD in bbh production at the LHC under current experimental constraints, JHEP 01 (2013) 161 [arXiv:1208.3413] [INSPIRE].
B. Yang, J. Han, S. Zhou and N. Liu, Single Higgs boson production at e + e − colliders in the Littlest Higgs Model with T-parity, J. Phys. G 41 (2014) 075009 [arXiv:1401.0289] [INSPIRE].
S.L. Hu, N. Liu, J. Ren and L. Wu, Revisiting Associated Production of 125 GeV Higgs Boson with a Photon at a Higgs Factory, arXiv:1402.3050 [INSPIRE].
N. Liu, J. Ren, L. Wu, P. Wu and J.M. Yang, Full one-loop electroweak corrections to e + e − → ZHγ at a Higgs factory, JHEP 04 (2014) 189 [arXiv:1311.6971] [INSPIRE].
TLEP Design Study Working Group collaboration, M. Bicer et al., First Look at the Physics Case of TLEP, JHEP 01 (2014) 164 [arXiv:1308.6176] [INSPIRE].
E.L. Berger, S.B. Giddings, H. Wang and H. Zhang, Higgs-flavon mixing and LHC phenomenology in a simplified model of broken flavor symmetry, arXiv:1406.6054 [INSPIRE].
B. Gripaios, T. Müller, M.A. Parker and D. Sutherland, Search Strategies for Top Partners in Composite Higgs models, JHEP 08 (2014) 171 [arXiv:1406.5957] [INSPIRE].
A. Azatov, C. Grojean, A. Paul and E. Salvioni, Taming the off-shell Higgs boson, arXiv:1406.6338 [INSPIRE].
D. Barducci et al., Model Independent Framework for Analysis of Scenarios with Multiple Heavy Extra Quarks, arXiv:1405.0737 [INSPIRE].
J. Berger, J. Hubisz and M. Perelstein, A Fermionic Top Partner: Naturalness and the LHC, JHEP 07 (2012) 016 [arXiv:1205.0013] [INSPIRE].
C. Han, A. Kobakhidze, N. Liu, L. Wu and B. Yang, Constraining Top partner and Naturalness at the LHC and TLEP, arXiv:1405.1498 [INSPIRE].
M. Koratzinos et al., TLEP: A High-Performance Circular e + e − Collider to Study the Higgs Boson, arXiv:1305.6498 [INSPIRE].
TLEP Design Study Working Group collaboration, M. Bicer et al., First Look at the Physics Case of TLEP, JHEP 01 (2014) 164 [arXiv:1308.6176] [INSPIRE].
X.-F. Han, L. Wang, J.M. Yang and J. Zhu, Little Higgs theory confronted with the LHC Higgs data, Phys. Rev. D 87 (2013) 055004 [arXiv:1301.0090] [INSPIRE].
J. Reuter and M. Tonini, Can the 125 GeV Higgs be the Little Higgs?, JHEP 02 (2013) 077 [arXiv:1212.5930] [INSPIRE].
J. Reuter, M. Tonini and M. de Vries, Little Higgs Model Limits from LHC — Input for Snowmass 2013, arXiv:1307.5010 [INSPIRE].
J. Reuter, M. Tonini and M. de Vries, Littlest Higgs with T-parity: Status and Prospects, JHEP 02 (2014) 053 [arXiv:1310.2918] [INSPIRE].
C.-R. Chen, K. Tobe and C.-P. Yuan, Higgs boson production and decay in little Higgs models with T-parity, Phys. Lett. B 640 (2006) 263 [hep-ph/0602211] [INSPIRE].
Particle Data Group collaboration, J. Beringer et al., Review of Particle Physics (RPP), Phys. Rev. D 86 (2012) 010001 [INSPIRE].
J. Hubisz, P. Meade, A. Noble and M. Perelstein, Electroweak precision constraints on the littlest Higgs model with T parity, JHEP 01 (2006) 135 [hep-ph/0506042] [INSPIRE].
M.E. Peskin and T. Takeuchi, Estimation of oblique electroweak corrections, Phys. Rev. D 46 (1992) 381 [INSPIRE].
R. Barbieri, B. Bellazzini, V.S. Rychkov and A. Varagnolo, The Higgs boson from an extended symmetry, Phys. Rev. D 76 (2007) 115008 [arXiv:0706.0432] [INSPIRE].
Z. Han and W. Skiba, Effective theory analysis of precision electroweak data, Phys. Rev. D 71 (2005) 075009 [hep-ph/0412166] [INSPIRE].
B. Yang, X. Wang and J. Han, The study of the contribution of the LHT model to \( Zb\overline{b} \) coupling, Nucl. Phys. B 847 (2011) 1 [arXiv:1103.2506] [INSPIRE].
P. Bechtle, S. Heinemeyer, O. Stål, T. Stefaniak and G. Weiglein, HiggsSignals: Confronting arbitrary Higgs sectors with measurements at the Tevatron and the LHC, Eur. Phys. J. C 74 (2014) 2711 [arXiv:1305.1933] [INSPIRE].
P. Bechtle, O. Brein, S. Heinemeyer, G. Weiglein and K.E. Williams, HiggsBounds: Confronting Arbitrary Higgs Sectors with Exclusion Bounds from LEP and the Tevatron, Comput. Phys. Commun. 181 (2010) 138 [arXiv:0811.4169] [INSPIRE].
P. Bechtle, S. Heinemeyer, O. Stål, T. Stefaniak and G. Weiglein, Probing the Standard Model with Higgs signal rates from the Tevatron, the LHC and a future ILC, arXiv:1403.1582 [INSPIRE].
ATLAS collaboration, Search for heavy top-like quarks decaying to a Higgs boson and a top quark in the lepton plus jets final state in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, ATLAS-CONF-2013-018 (2013).
S. Dawson et al., Working Group Report: Higgs Boson, arXiv:1310.8361 [INSPIRE].
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Yang, B., Mi, G. & Liu, N. Higgs couplings and Naturalness in the littlest Higgs model with T-parity at the LHC and TLEP. J. High Energ. Phys. 2014, 47 (2014). https://doi.org/10.1007/JHEP10(2014)047
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DOI: https://doi.org/10.1007/JHEP10(2014)047