Abstract
We study the effects from light sfermions on the lightest Higgs boson production and decay at the Large Hadron Collider (LHC) within the Minimal Supersymmetric Standard Model (MSSM). We find that the scenario with light coloured sfermions — stops or sbottoms — has the potential to explain a non-universal alteration, as hinted by LHC data, of the gluon-gluon Fusion (μ ggF ) with respect to the Vector Boson Fusion (μ VBF) event rates and, in particular, can predict \( \frac{{{\mu_{\mathrm{VBF}}}}}{{{\mu_{ggF }}}} \) > 1 for all Higgs boson decay channels in ggF large areas of the parameter space.
We also find that the scenario with a light stop/sbottom can be complemented by the scenario in which the total Higgs width, Γtot, is reduced due to a suppressed Yukawa coupling Y b . In this case, the reduction of the Higgs production rates in the ggF process which occurs in the maximal mixing scenario is compensated by the reduction of the H → \( b\overline{b} \) partial decay width, the largest component of Γtot.
Furthermore, we highlight the fact that, in the light stop/sbottom scenario, event rates with the Higgs boson decaying to a \( b\overline{b} \) final state are predicted to be essentially below unity, especially in case of ggF, which is doubly suppressed, at production, due to the negative interference from stop/sbottom loops, as well at decay level, due to the Y b suppression. Therefore, during the future LHC runs, the measurement of h → \( b\overline{b} \) final states is a matter of special importance, which will offer additional handles to pin down the possible MSSM structure of the Higgs sector.
Amongst all viable MSSM configurations that we study (including revisiting a light stau solution), we emphasise most the scenario with a light stop, as the latter is also motivated by Dark Matter and Electro-Weak baryogenesis. We also perform fits of the MSSM against the LHC data for all scenarios which we introduce, emphasising the fact that in most cases these are better than for the SM.
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References
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, 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 (2012) 1 [arXiv:1207.7214] [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).
CMS collaboration, Search for a Higgs boson decaying into a Z and a photon in pp collisions at \( \sqrt{s} \) = 7 and 8 TeV, Phys. Lett. B 726 (2013) 587 [arXiv:1307.5515] [INSPIRE].
CMS collaboration, Search for invisible Higgs boson production with the CMS detector at the LHC, arXiv:1310.1002 [INSPIRE].
ATLAS collaboration, Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC, Phys. Lett. B 726 (2013) 88 [arXiv:1307.1427] [INSPIRE].
J.S. Lee et al., CPsuperH: a computational tool for Higgs phenomenology in the minimal supersymmetric standard model with explicit CP-violation, Comput. Phys. Commun. 156 (2004) 283 [hep-ph/0307377] [INSPIRE].
J.S. Lee, M. Carena, J. Ellis, A. Pilaftsis and C.E.M. Wagner, CPsuperH2.0: an improved computational tool for Higgs phenomenology in the MSSM with explicit CP-violation, Comput. Phys. Commun. 180 (2009) 312 [arXiv:0712.2360] [INSPIRE].
A. Djouadi, The anatomy of electro-weak symmetry breaking. II. The Higgs bosons in the minimal supersymmetric model, Phys. Rept. 459 (2008) 1 [hep-ph/0503173] [INSPIRE].
Higgs Working Group collaboration, M.S. Carena et al., Report of the Tevatron Higgs Working Group, hep-ph/0010338 [INSPIRE].
A. Arbey, M. Battaglia, A. Djouadi and F. Mahmoudi, An update on the constraints on the phenomenological MSSM from the new LHC Higgs results, Phys. Lett. B 720 (2013) 153 [arXiv:1211.4004] [INSPIRE].
P. Bechtle et al., MSSM interpretations of the LHC discovery: light or heavy Higgs?, Eur. Phys. J. C 73 (2013) 2354 [arXiv:1211.1955] [INSPIRE].
K. Schmidt-Hoberg, F. Staub and M.W. Winkler, Enhanced diphoton rates at Fermi and the LHC, JHEP 01 (2013) 124 [arXiv:1211.2835] [INSPIRE].
Z. Heng, A 125 GeV Higgs and its di-photon signal in different SUSY models: a mini review, Adv. High Energy Phys. 2012 (2012) 312719 [arXiv:1210.3751] [INSPIRE].
M. Drees, A supersymmetric explanation of the excess of Higgs-like events at the LHC and at LEP, Phys. Rev. D 86 (2012) 115018 [arXiv:1210.6507] [INSPIRE].
A. Arbey, M. Battaglia, A. Djouadi and F. Mahmoudi, The Higgs sector of the phenomenological MSSM in the light of the Higgs boson discovery, JHEP 09 (2012) 107 [arXiv:1207.1348] [INSPIRE].
K. Schmidt-Hoberg and F. Staub, Enhanced h → γγ rate in MSSM singlet extensions, JHEP 10 (2012) 195 [arXiv:1208.1683] [INSPIRE].
M. Carena, I. Low and C.E.M. Wagner, Implications of a modified Higgs to diphoton decay width, JHEP 08 (2012) 060 [arXiv:1206.1082] [INSPIRE].
M. Carena, S. Gori, N.R. Shah and C.E.M. Wagner, A 125 GeV SM-like Higgs in the MSSM and the γγ rate, JHEP 03 (2012) 014 [arXiv:1112.3336] [INSPIRE].
L.J. Hall, D. Pinner and J.T. Ruderman, A natural SUSY Higgs near 126 GeV, JHEP 04 (2012) 131 [arXiv:1112.2703] [INSPIRE].
S. Heinemeyer, O. Stål and G. Weiglein, Interpreting the LHC Higgs search results in the MSSM, Phys. Lett. B 710 (2012) 201 [arXiv:1112.3026] [INSPIRE].
A. Arbey, M. Battaglia, A. Djouadi, F. Mahmoudi and J. Quevillon, Implications of a 125 GeV Higgs for supersymmetric models, Phys. Lett. B 708 (2012) 162 [arXiv:1112.3028] [INSPIRE].
P. Draper, P. Meade, M. Reece and D. Shih, Implications of a 125 GeV Higgs for the MSSM and low-scale SUSY breaking, Phys. Rev. D 85 (2012) 095007 [arXiv:1112.3068] [INSPIRE].
N. Chen and H.-J. He, LHC signatures of two-Higgs-doublets with fourth family, JHEP 04 (2012) 062 [arXiv:1202.3072] [INSPIRE].
G. Guo, B. Ren and X.-G. He, LHC evidence of a 126 GeV Higgs boson from H → γγ with three and four generations, arXiv:1112.3188 [INSPIRE].
X.-G. He, B. Ren and J. Tandean, Hints of standard model Higgs boson at the LHC and light dark matter searches, Phys. Rev. D 85 (2012) 093019 [arXiv:1112.6364] [INSPIRE].
A. Djouadi, O. Lebedev, Y. Mambrini and J. Quevillon, Implications of LHC searches for Higgs-portal dark matter, Phys. Lett. B 709 (2012) 65 [arXiv:1112.3299] [INSPIRE].
K. Cheung and T.-C. Yuan, Could the excess seen at 124–126 GeV be due to the Randall-Sundrum radion?, Phys. Rev. Lett. 108 (2012) 141602 [arXiv:1112.4146] [INSPIRE].
B. Batell, S. Gori and L.-T. Wang, Exploring the Higgs portal with 10/fb at the LHC, JHEP 06 (2012) 172 [arXiv:1112.5180] [INSPIRE].
N.D. Christensen, T. Han and S. Su, MSSM Higgs bosons at the LHC, Phys. Rev. D 85 (2012) 115018 [arXiv:1203.3207] [INSPIRE].
M. Kadastik, K. Kannike, A. Racioppi and M. Raidal, Implications of the 125 GeV Higgs boson for scalar dark matter and for the CMSSM phenomenology, JHEP 05 (2012) 061 [arXiv:1112.3647] [INSPIRE].
H. Baer, V. Barger and A. Mustafayev, Implications of a 125 GeV Higgs scalar for LHC SUSY and neutralino dark matter searches, Phys. Rev. D 85 (2012) 075010 [arXiv:1112.3017] [INSPIRE].
L. Aparicio, D.G. Cerdeño and L.E. Ibáñez, A 119–125 GeV Higgs from a string derived slice of the CMSSM, JHEP 04 (2012) 126 [arXiv:1202.0822] [INSPIRE].
J. Ellis and K.A. Olive, Revisiting the Higgs mass and dark matter in the CMSSM, Eur. Phys. J. C 72 (2012) 2005 [arXiv:1202.3262] [INSPIRE].
H. Baer, V. Barger and A. Mustafayev, Neutralino dark matter in mSUGRA/CMSSM with a 125 GeV light Higgs scalar, JHEP 05 (2012) 091 [arXiv:1202.4038] [INSPIRE].
N. Desai, B. Mukhopadhyaya and S. Niyogi, Constraints on invisible Higgs decay in MSSM in the light of diphoton rates from the LHC, arXiv:1202.5190 [INSPIRE].
J. Cao, Z. Heng, D. Li and J.M. Yang, Current experimental constraints on the lightest Higgs boson mass in the constrained MSSM, Phys. Lett. B 710 (2012) 665 [arXiv:1112.4391] [INSPIRE].
S.F. King, M. Mühlleitner, R. Nevzorov and K. Walz, Natural NMSSM Higgs bosons, Nucl. Phys. B 870 (2013) 323 [arXiv:1211.5074] [INSPIRE].
J.F. Gunion, Y. Jiang and S. Kraml, Could two NMSSM Higgs bosons be present near 125 GeV?, Phys. Rev. D 86 (2012) 071702 [arXiv:1207.1545] [INSPIRE].
G. Bélanger et al., Higgs bosons at 98 and 125 GeV at LEP and the LHC, JHEP 01 (2013) 069 [arXiv:1210.1976] [INSPIRE].
J.F. Gunion, Y. Jiang and S. Kraml, The constrained NMSSM and Higgs near 125 GeV, Phys. Lett. B 710 (2012) 454 [arXiv:1201.0982] [INSPIRE].
U. Ellwanger and C. Hugonie, Higgs bosons near 125 GeV in the NMSSM with constraints at the GUT scale, Adv. High Energy Phys. 2012 (2012) 625389 [arXiv:1203.5048] [INSPIRE].
U. Ellwanger, A Higgs boson near 125 GeV with enhanced di-photon signal in the NMSSM, JHEP 03 (2012) 044 [arXiv:1112.3548] [INSPIRE].
J.-J. Cao, Z.-X. Heng, J.M. Yang, Y.-M. Zhang and J.-Y. Zhu, A SM-like Higgs near 125 GeV in low energy SUSY: a comparative study for MSSM and NMSSM, JHEP 03 (2012) 086 [arXiv:1202.5821] [INSPIRE].
Z. Kang, J. Li and T. Li, On naturalness of the MSSM and NMSSM, JHEP 11 (2012) 024 [arXiv:1201.5305] [INSPIRE].
A. Elsayed, S. Khalil and S. Moretti, Higgs mass corrections in the SUSY B-L model with inverse seesaw, Phys. Lett. B 715 (2012) 208 [arXiv:1106.2130] [INSPIRE].
L. Basso and F. Staub, Enhancing h → γγ with staus in SUSY models with extended gauge sector, Phys. Rev. D 87 (2013) 015011 [arXiv:1210.7946] [INSPIRE].
S. Khalil and S. Moretti, Heavy neutrinos, Z′ and Higgs bosons at the LHC: new particles from an old symmetry, J. Mod. Phys. 4 (2013) 7 [arXiv:1207.1590] [INSPIRE].
S. Khalil and S. Moretti, A simple symmetry as a guide toward new physics beyond the standard model, Front. Phys. 1 (2013) 10 [arXiv:1301.0144] [INSPIRE].
B. Batell, S. Jung and C.E.M. Wagner, Very light charginos and Higgs decays, JHEP 12 (2013) 075 [arXiv:1309.2297] [INSPIRE].
M. Carena, S. Gori, N.R. Shah, C.E.M. Wagner and L.-T. Wang, Light stau phenomenology and the Higgs γγ rate, JHEP 07 (2012) 175 [arXiv:1205.5842] [INSPIRE].
J.R. Ellis, G. Ridolfi and F. Zwirner, Radiative corrections to the masses of supersymmetric Higgs bosons, Phys. Lett. B 257 (1991) 83 [INSPIRE].
H.E. Haber and R. Hempfling, Can the mass of the lightest Higgs boson of the minimal supersymmetric model be larger than mZ ?, Phys. Rev. Lett. 66 (1991) 1815 [INSPIRE].
H.E. Haber, R. Hempfling and A.H. Hoang, Approximating the radiatively corrected Higgs mass in the minimal supersymmetric model, Z. Phys. C 75 (1997) 539 [hep-ph/9609331] [INSPIRE].
Joint LEP2 Supersymmetry Working Group, Combined LEP selectron/smuon/stau results, 183–208 GeV (2004), http://lepsusy.web.cern.ch/lepsusy.
M. Drees, A supersymmetric explanation of the excess of Higgs-like events at LEP, Phys. Rev. D 71 (2005) 115006 [hep-ph/0502075] [INSPIRE].
J.M. Frere, D.R.T. Jones and S. Raby, Fermion masses and induction of the weak scale by supergravity, Nucl. Phys. B 222 (1983) 11 [INSPIRE].
M. Claudson, L.J. Hall and I. Hinchliffe, Low-energy supergravity: false vacua and vacuous predictions, Nucl. Phys. B 228 (1983) 501 [INSPIRE].
J.E. Camargo-Molina, B. O’Leary, W. Porod and F. Staub, Vevacious: a tool for finding the global minima of one-loop effective potentials with many scalars, Eur. Phys. J. C 73 (2013) 2588 [arXiv:1307.1477] [INSPIRE].
M.A. Shifman, A.I. Vainshtein, M.B. Voloshin and V.I. Zakharov, Low-energy theorems for Higgs boson couplings to photons, Sov. J. Nucl. Phys. 30 (1979) 711 [INSPIRE].
J.R. Ellis, M.K. Gaillard and D.V. Nanopoulos, A phenomenological profile of the Higgs boson, Nucl. Phys. B 106 (1976) 292 [INSPIRE].
A. Chakraborty et al., The 125 GeV Higgs signal at the LHC in the CP-violating MSSM, arXiv:1301.2745 [INSPIRE].
OPAL collaboration, G. Abbiendi et al., Search for chargino and neutralino production at \( \sqrt{s} \) = 192 GeV to 209 GeV at LEP, Eur. Phys. J. C 35 (2004) 1 [hep-ex/0401026] [INSPIRE].
M.S. Carena, D. Garcia, U. Nierste and C.E.M. Wagner, Effective Lagrangian for the tbH+ interaction in the MSSM and charged Higgs phenomenology, Nucl. Phys. B 577 (2000) 88 [hep-ph/9912516] [INSPIRE].
H. Baer et al., Radiative natural supersymmetry: reconciling electroweak fine-tuning and the Higgs boson mass, Phys. Rev. D 87 (2013) 115028 [arXiv:1212.2655] [INSPIRE].
D. Curtin, P. Jaiswal and P. Meade, Excluding electroweak baryogenesis in the MSSM, JHEP 08 (2012) 005 [arXiv:1203.2932] [INSPIRE].
M. Carena, G. Nardini, M. Quirós and C.E.M. Wagner, MSSM electroweak baryogenesis and LHC data, JHEP 02 (2013) 001 [arXiv:1207.6330] [INSPIRE].
A. Belyaev, M.S. Brown, R. Foadi and M.T. Frandsen, The technicolor Higgs in the light of LHC data, arXiv:1309.2097 [INSPIRE].
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Belyaev, A., Khalil, S., Moretti, S. et al. Light sfermion interplay in the 125 GeV MSSM Higgs production and decay at the LHC. J. High Energ. Phys. 2014, 76 (2014). https://doi.org/10.1007/JHEP05(2014)076
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DOI: https://doi.org/10.1007/JHEP05(2014)076