Abstract
While current ATLAS and CMS measurements exclude a light charged Higgs (m H ± < 160 GeV) for most of the parameter region in the context of the MSSM scenarios, these bounds are significantly weakened in the Type II 2HDM once the exotic decay channel into a lighter neutral Higgs, H ± → AW/HW, is open. In this study, we examine the possibility of a light charged Higgs produced in top decay via single top or top pair production, which is the most prominent production channel for a light charged Higgs at the LHC. We consider the subsequent decay H ± → AW/HW, which can reach a sizable branching fraction at low tan β once it is kinematically permitted. With a detailed collider analysis, we obtain exclusion and discovery bounds for the 14 TeV LHC assuming the existence of a 70 GeV neutral scalar. Assuming BR(H ± → AW/HW) = 100% and BR(A/H → ττ) = 8.6%, the 95% exclusion limits on BR(t → H + b) are about 0.2% and 0.03% for single top and top pair production respectively, with an integrated luminosity of 300 fb−1. The discovery reaches are about 3 times higher. In the context of the Type II 2HDM, discovery is possible at both large tan β > 17 for 155 GeV < m H ± < 165 GeV, and small tan β < 6 over the entire mass range. Exclusion is possible in the entire tan β versus \( {m}_{H^{\pm }} \) plane except for charged Higgs masses close to the top threshold. The exotic decay channel H ± → AW/HW is therefore complementary to the conventional H ± → τν channel.
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References
ATLAS collaboration, Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC, Phys. Lett. B 716 (2013) 1 [arXiv:1207.7214] [INSPIRE].
CMS collaboration, Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC, Phys. Lett. B 716 (2012) 30 [arXiv:1207.7235] [INSPIRE].
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).
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 (2013).
ATLAS collaboration, Evidence for the spin-0 nature of the Higgs boson using ATLAS data, Phys. Lett. B 726 (2013) 120 [arXiv:1307.1432] [INSPIRE].
H.P. Nilles, Supersymmetry, Supergravity and Particle Physics, Phys. Rept. 110 (1984) 1 [INSPIRE].
H.E. Haber and G.L. Kane, The Search for Supersymmetry: Probing Physics Beyond the Standard Model, Phys. Rept. 117 (1985) 75 [INSPIRE].
R. Barbieri, Looking Beyond the Standard Model: The Supersymmetric Option, Riv. Nuovo Cim. 11N4 (1988) 1 [INSPIRE].
J.R. Ellis, J.F. Gunion, H.E. Haber, L. Roszkowski and F. Zwirner, Higgs Bosons in a Nonminimal Supersymmetric Model, Phys. Rev. D 39 (1989) 844 [INSPIRE].
M. Drees, Supersymmetric Models with Extended Higgs Sector, Int. J. Mod. Phys. A 4 (1989) 3635 [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].
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].
CMS collaboration, Search for a Higgs Boson in the Mass Range from 145 to 1000 GeV Decaying to a Pair of W or Z Bosons, arXiv:1504.00936 [INSPIRE].
ATLAS collaboration, Search for charged Higgs bosons in the τ +jets final state with pp collision data recorded at \( \sqrt{s}=8 \) TeV with the ATLAS experiment, ATLAS-CONF-2013-090 (2013).
CMS collaboration, Search for charged Higgs bosons with the H+ to tau nu decay channel in the fully hadronic final state at \( \sqrt{s}=8 \) TeV, CMS-PAS-HIG-14-020 (2014).
ATLAS collaboration, Search for a light charged Higgs boson in the decay channel \( {H}^{+}\to c\overline{s} \) in \( t\overline{t} \) events using pp collisions at \( \sqrt{s}=7 \) TeV with the ATLAS detector, Eur. Phys. J. C 73 (2013) 2465 [arXiv:1302.3694] [INSPIRE].
CMS collaboration, Search for H+ to cs-bar decay, CMS-PAS-HIG-13-035 (2014).
CMS collaboration, Search for neutral MSSM Higgs bosons decaying to a pair of tau leptons in pp collisions, JHEP 10 (2014) 160 [arXiv:1408.3316] [INSPIRE].
ATLAS collaboration, Search for neutral Higgs bosons of the minimal supersymmetric standard model in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, JHEP 11 (2014) 056 [arXiv:1409.6064] [INSPIRE].
D. Curtin et al., Exotic decays of the 125 GeV Higgs boson, Phys. Rev. D 90 (2014) 075004 [arXiv:1312.4992] [INSPIRE].
E. Brownson et al., Heavy Higgs Scalars at Future Hadron Colliders (A Snowmass Whitepaper), arXiv:1308.6334 [INSPIRE].
B. Coleppa, F. Kling and S. Su, Exotic Decays Of A Heavy Neutral Higgs Through HZ/AZ Channel, JHEP 09 (2014) 161 [arXiv:1404.1922] [INSPIRE].
B. Coleppa, F. Kling and S. Su, Charged Higgs search via AW ± /HW ± channel, JHEP 12 (2014) 148 [arXiv:1408.4119] [INSPIRE].
T. Li and S. Su, Exotic Higgs Decay via Charged Higgs, arXiv:1504.04381 [INSPIRE].
G.C. Dorsch, S.J. Huber, K. Mimasu and J.M. No, Echoes of the Electroweak Phase Transition: Discovering a second Higgs doublet through A 0 → ZH 0, Phys. Rev. Lett. 113 (2014) 211802 [arXiv:1405.5537] [INSPIRE].
N. Chen, C. Du, Y. Fang and L.-C. Lü, LHC Searches for The Heavy Higgs Boson via Two B Jets plus Diphoton, Phys. Rev. D 89 (2014) 115006 [arXiv:1312.7212] [INSPIRE].
N. Chen, J. Li, Y. Liu and Z. Liu, LHC searches for the CP-odd Higgs by the jet substructure analysis, Phys. Rev. D 91 (2015) 075002 [arXiv:1410.4447] [INSPIRE].
R. Enberg, W. Klemm, S. Moretti, S. Munir and G. Wouda, Charged Higgs boson in the W ± Higgs channel at the Large Hadron Collider, Nucl. Phys. B 893 (2015) 420 [arXiv:1412.5814] [INSPIRE].
CMS collaboration, Search for a pseudoscalar boson A decaying into a Z and an h boson in the llbb final state, CMS-PAS-HIG-14-011 (2014).
ATLAS collaboration, Search for a CP-odd Higgs boson decaying to Zh in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, Phys. Lett. B 744 (2015) 163 [arXiv:1502.04478] [INSPIRE].
CMS collaboration, 2HDM scenario, H to hh and A to Zh, CMS-PAS-HIG-13-025 (2013).
F. Mahmoudi and O. Stal, Flavor constraints on the two-Higgs-doublet model with general Yukawa couplings, Phys. Rev. D 81 (2010) 035016 [arXiv:0907.1791] [INSPIRE].
M. Misiak et al., Updated NNLO QCD predictions for the weak radiative B-meson decays, Phys. Rev. Lett. 114 (2015) 221801 [arXiv:1503.01789] [INSPIRE].
B. Coleppa, F. Kling and S. Su, Constraining Type II 2HDM in Light of LHC Higgs Searches, JHEP 01 (2014) 161 [arXiv:1305.0002] [INSPIRE].
C.D. Froggatt, R.G. Moorhouse and I.G. Knowles, Leading radiative corrections in two scalar doublet models, Phys. Rev. D 45 (1992) 2471 [INSPIRE].
C.D. Froggatt, R.G. Moorhouse and I.G. Knowles, Two scalar doublet models with softly broken symmetries, Nucl. Phys. B 386 (1992) 63 [INSPIRE].
A. Pomarol and R. Vega, Constraints on CP-violation in the Higgs sector from the rho parameter, Nucl. Phys. B 413 (1994) 3 [hep-ph/9305272] [INSPIRE].
A. Wahab El Kaffas, P. Osland and O.M. Ogreid, Constraining the Two-Higgs-Doublet-Model parameter space, Phys. Rev. D 76 (2007) 095001 [arXiv:0706.2997] [INSPIRE].
H.E. Haber and D. O’Neil, Basis-independent methods for the two-Higgs-doublet model III: The CP-conserving limit, custodial symmetry and the oblique parameters S, T, U, Phys. Rev. D 83 (2011) 055017 [arXiv:1011.6188] [INSPIRE].
T. Han, T. Li, S. Su and L.-T. Wang, Non-Decoupling MSSM Higgs Sector and Light Superpartners, JHEP 11 (2013) 053 [arXiv:1306.3229] [INSPIRE].
D. Eriksson, J. Rathsman and O. Stal, 2HDMC: Two-Higgs-Doublet Model Calculator Physics and Manual, Comput. Phys. Commun. 181 (2010) 189 [arXiv:0902.0851] [INSPIRE].
J.F. Gunion, H.E. Haber, G.L. Kane and S. Dawson, The Higgs Hunter’s Guide, Front. Phys. 80 (2000) 1 [INSPIRE].
LHC Higgs Cross section Working Group collaboration, J.R. Andersen et al., Handbook of LHC Higgs Cross sections: 3. Higgs Properties, arXiv:1307.1347 [INSPIRE].
N.D. Christensen, T. Han, Z. Liu and S. Su, Low-Mass Higgs Bosons in the NMSSM and Their LHC Implications, JHEP 08 (2013) 019 [arXiv:1303.2113] [INSPIRE].
M. Drees, M. Guchait and D.P. Roy, Signature of charged to neutral Higgs boson decay at the LHC in SUSY models, Phys. Lett. B 471 (1999) 39 [hep-ph/9909266] [INSPIRE].
Particle Data Group collaboration, J. Beringer et al., Review of Particle Physics (RPP), Phys. Rev. D 86 (2012) 010001 [INSPIRE].
R. Guedes, S. Moretti and R. Santos, Charged Higgs bosons in single top production at the LHC, JHEP 10 (2012) 119 [arXiv:1207.4071] [INSPIRE].
M. Hashemi, Single Top Events as a Source of Light Charged Higgs in the Fully Hadronic Final State at LHC, JHEP 05 (2013) 112 [arXiv:1305.2096] [INSPIRE].
M. Hashemi, Observability of Light Charged Higgs Decay to Muon in Top Quark Pair Events at LHC, Eur. Phys. J. C 72 (2012) 1994 [arXiv:1109.5356] [INSPIRE].
D. Das, L. Mitzka and W. Porod, Discovery of Charged Higgs through γγ final states, arXiv:1408.17 c04 [INSPIRE].
N. Kidonakis, Differential and total cross sections for top pair and single top production, arXiv:1205.3453 [INSPIRE].
J. Alwall, M. Herquet, F. Maltoni, O. Mattelaer and T. Stelzer, MadGraph 5: Going Beyond, JHEP 06 (2011) 128 [arXiv:1106.0522] [INSPIRE].
J. Alwall et al., The automated computation of tree-level and next-to-leading order differential cross sections and their matching to parton shower simulations, JHEP 07 (2014) 079 [arXiv:1405.0301] [INSPIRE].
T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 Physics and Manual, JHEP 05 (2006) 026 [hep-ph/0603175] [INSPIRE].
DELPHES 3 collaboration, J. de Favereau et al., DELPHES 3: a modular framework for fast simulation of a generic collider experiment, JHEP 02 (2014) 057 [arXiv:1307.6346] [INSPIRE].
A. Avetisyan et al., Methods and Results for Standard Model Event Generation at \( \sqrt{s}=14 \) TeV, 33 TeV and 100 TeV Proton Colliders: A Snowmass Whitepaper, arXiv:1308.1636 [INSPIRE].
L. Moneta et al., The RooStats Project, PoS(ACAT2010)057 [arXiv:1009.1003] [INSPIRE].
RooStats Team collaboration, G. Schott, RooStats for Searches, arXiv:1203.1547 [INSPIRE].
http://www-ekp.physik.uni-karlsruhe.de/~ott/theta/theta-auto/.
ATLAS collaboration, Measurement of the t-channel single top-quark production cross section in pp collisions at \( \sqrt{s}=7 \) TeV with the ATLAS detector, Phys. Lett. B 717 (2013) 330 [arXiv:1205.3130] [INSPIRE].
F. Kling, T. Plehn and M. Takeuchi, Tagging single Tops, Phys. Rev. D 86 (2012) 094029 [arXiv:1207.4787] [INSPIRE].
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Kling, F., Pyarelal, A. & Su, S. Light charged Higgs bosons to AW/HW via top decay. J. High Energ. Phys. 2015, 51 (2015). https://doi.org/10.1007/JHEP11(2015)051
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DOI: https://doi.org/10.1007/JHEP11(2015)051