Abstract
In order to investigate whether, and if so how much, the MSSM can improve the theoretical description of the experimental data compared to the SM, we fit the experimentally measured Higgs decay rates, the Higgs mass and low-energy observables under the hypothesis that the light or the heavy CP-even Higgs of the MSSM is the observed state at 126 GeV. The fit quality in the MSSM, for both Higgs interpretations, is compared to the SM. We determine the regions of the MSSM parameter space which are favoured by the experimental data, and we demonstrate some features of the best-fit point.
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Notes
- 1.
The reader should keep in mind here (and in the following) that the point density has no statistical meaning.
- 2.
This HiggsBounds version contains besides the results in the last publicly available version (version 4.1.0) the CMS result from the search for neutral Higgs bosons decaying into \(\tau \) pairs [7].
- 3.
- 4.
We note that the Belle Collaboration has reported a new (lower) measurement of \(\mathrm{BR}(B_u \rightarrow \tau \nu _\tau )\) that is in better agreement with the SM (and also with models with two Higgs doublets, like the MSSM) [41]. While we do not take this new result into account in our overall fit results, in the following we do comment briefly on its possible effects. The measurement of \(\mathrm{BR}(B_s \rightarrow \mu ^- \mu ^+)\) [42, 43] became public shortly after this analysis was conducted. Therefore here only an upper limit on \(\mathrm{BR}(B_s\rightarrow \mu ^+\mu ^-)\) is included. Both of these results are included in the updated analysis. We do not include the BaBar result on \(\bar{B} \rightarrow D^{(*)}\tau ^-\bar{\nu }_\tau \) [44], which shows (combining the D and \(D^{(*)}\) measurements) a \(3.4\,\sigma \) deviation from the SM prediction, which can not be explained in the MSSM either.
- 5.
The Mathematica code is too slow to be included in a scan with \(\mathcal{O}(10^7)\) points.
- 6.
The contributions from light sleptons can even be significantly larger (up to \({\sim }60\) MeV) when all sleptons have masses just above the LEP limit as we have shown in Chap. 5, which requires \(M_{\tilde{E}}=M_{\tilde{L}} \sim 100\) GeV together with a small mixing in the slepton sector (the mixing has to be quite small to keep \(m_{\tilde{\tau }_1}\) above the LEP limit). Such parameter points are not present here, since we choose \(M_{\tilde{l}_3} > 200\) GeV and \(M_{\tilde{E}_{1,2}}=M_{\tilde{L}_{1,2}} = 300\) GeV (\(M_{\tilde{E}_{1,2}}=M_{\tilde{L}_{1,2}} = M_{\tilde{l}_3}\)) in the original (updated) analysis. A similar argument holds for the chargino/neutralino contributions, since we choose \(M_2>200\) GeV.
- 7.
The measured rates, which are taken into account, can be seen in Fig. 7.2 where we present the results, which will be discussed below.
- 8.
The SM \(M_W\) value is slightly different from the one in Table 7.2, due to small changes in the input values for SM parameters. We set the SM parameters here to the FeynHiggs default values. While here the \(M_W\) prediction in the MSSM is obtained from FeynHiggs, we plan to use the Fortran code presented in Chap. 5 in a future update of this analysis.
- 9.
We did not update the analysis for the heavy Higgs case yet.
- 10.
The p-value provides information about the goodness of a fit, by quantifying the discrepancy between the observed data and what one would expect from a certain hypothesis (e.g. a certain model: SM, MSSM light Higgs case,...). To be more precise it gives the probability that a test statistic is in equal or worse agreement with the expectation from the hypothesis than the actual data. Thus large p-values show a good agreement of the expectation from the hypothesis with the data, whereas small p-values correspond to a poor agreement. More details can be found e.g. in the “Statistics” review in Ref. [25] .
- 11.
The pull values are defined as (predicted value - observed value)/(uncertainty).
- 12.
In the updated fit, points with large \(\tan \beta \) values that have a small \(\chi ^2_{(g-2)_{\mu }}\) have typically \(M_{\tilde{E}_{1,2}}=M_{\tilde{L}_{1,2}} \gtrsim 400\) GeV.
- 13.
In Fig. 7.15 we extended the plotted range to large \(m_{\tilde{t}_1}\) values, to include the best-fit point in the plot. The edges for large \(m_{\tilde{t}_1}\) indicate the upper scan limits. The same feature would be visible in Fig. 7.14 if the plotting range were extended to larger \(m_{\tilde{t}_1}\) masses.
- 14.
The dominant contributions to \(\Delta _b\) beyond one-loop order are the QCD corrections, given in [83]. Those two-loop contributions are not included in our analysis.
References
ALEPH, DELPHI, L3, OPAL, LEP Working Group for Higgs Boson Searches, S. Schael, et al., Search for neutral MSSM Higgs bosons at LEP, Eur. Phys. J. C47 (2006) 547–587. hep-ex/0602042
Tevatron New Phenomena and Higgs Working Group, D. Benjamin, et al., Combined CDF and DØ Upper Limits on MSSM Higgs Boson Production in tau-tau Final States with up to 2.2 fb\(^{-1}\). arXiv:1003.3363
CDF, DØ Collaborations, T. Aaltonen, et al., Search for neutral Higgs bosons in events with multiple bottom quarks at the tevatron. Phys. Rev. D86 (2012) 091101. arXiv:1207.2757
ATLAS Collaboration. See: https://twiki.cern.ch/twiki/bin/view/AtlasPublic/HiggsPublicResults
ATLAS Collaboration, ATLAS-CONF-2012-094
ATLAS Collaboration, ATLAS-CONF-2012-011
CMS Collaboration, CMS-PAS-HIG-13-021
CMS Collaboration, S. Chatrchyan et al., Search for neutral MSSM Higgs bosons decaying to Tau Pairs in \(pp\) collisions at \(\sqrt{s}=7\) TeV. Phys. Rev. Lett. 106, 231801 (2011). arXiv:1104.1619
CMS Collaboration, S. Chatrchyan et al., Search for a light charged Higgs boson in top quark decays in \(pp\) collisions at \(\sqrt{s}=7\) TeV. JHEP 1207, 143 (2012). arXiv:1205.5736
CMS Collaboration, S. Chatrchyan et al., Search for a Higgs boson decaying into a b-quark pair and produced in association with b quarks in proton-proton collisions at 7 TeV. Phys. Lett. B722, 207–232 (2013). arXiv:1302.2892
CMS Collaboration, See: https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsHIG
ATLAS Collaboration, ATLAS-CONF-2013-090
M.S. Carena, S. Heinemeyer, C. Wagner, G. Weiglein, Suggestions for improved benchmark scenarios for Higgs boson searches at LEP-2. arXiv:hep-ph/9912223
M.S. Carena, S. Heinemeyer, C. Wagner, G. Weiglein, Suggestions for benchmark scenarios for MSSM Higgs boson searches at Hadron colliders. Eur. Phys. J. C26, 601–607 (2003). hep-ph/0202167
M.S. Carena, S. Heinemeyer, C. Wagner, G. Weiglein, MSSM Higgs boson searches at the Tevatron and the LHC: Impact of different benchmark scenarios. Eur. Phys. J. C45, 797–814 (2006). hep-ph/0511023
M. Carena, S. Heinemeyer, O. Stål, C. Wagner, G. Weiglein, MSSM Higgs boson searches at the LHC: benchmark scenarios after the discovery of a Higgs-like particle. Eur. Phys. J. C73, 2552 (2013). arXiv:1302.7033
S. AbdusSalam, B. Allanach, H. Dreiner, J. Ellis, U. Ellwanger et al., Benchmark models, planes, lines and points for future SUSY searches at the LHC. Eur. Phys. J. C71, 1835 (2011). arXiv:1109.3859
A. Arbey, M. Battaglia, F. Mahmoudi, Light neutralino dark matter in the pMSSM: implications of LEP, LHC and dark matter searches on SUSY particle spectra. Eur. Phys. J. C72, 2169 (2012). arXiv:1205.2557
A. Arbey, M. Battaglia, A. Djouadi, F. Mahmoudi, The Higgs sector of the phenomenological MSSM in the light of the Higgs boson discovery. JHEP 1209, 107 (2012). arXiv:1207.1348
P. Bechtle, S. Heinemeyer, O. Stål, T. Stefaniak, G. Weiglein, HiggsSignals: confronting arbitrary higgs sectors with measurements at the tevatron and the LHC. arXiv:1305.1933
S. Heinemeyer, W. Hollik, G. Weiglein, The masses of the neutral CP even Higgs bosons in the MSSM: Accurate analysis at the two loop level. Eur. Phys. J. C9, 343–366 (1999). hep-ph/9812472
S. Heinemeyer, W. Hollik, G. Weiglein, FeynHiggs: A program for the calculation of the masses of the neutral CP even Higgs bosons in the MSSM. Comput. Phys. Commun. 124, 76–89 (2000). hep-ph/9812320
G. Degrassi, S. Heinemeyer, W. Hollik, P. Slavich, G. Weiglein, Towards high precision predictions for the MSSM Higgs sector. Eur. Phys. J. C28, 133–143 (2003). hep-ph/0212020
M. Frank, T. Hahn, S. Heinemeyer, W. Hollik, H. Rzehak et al., The Higgs boson masses and mixings of the complex MSSM in the Feynman-diagrammatic approach. JHEP 0702, 047 (2007). hep-ph/0611326
Particle Data Group, J. Beringer, et al., Review of Particle Physics (RPP), Phys. Rev. D86 (2012) 010001. (And 2013 partial update for the 2014 edition)
P. Bechtle, O. Brein, S. Heinemeyer, G. Weiglein, K.E. Williams, HiggsBounds: confronting arbitrary Higgs sectors with exclusion bounds from LEP and the tevatron. Comput. Phys. Commun. 181, 138–167 (2010). arXiv:0811.4169
P. Bechtle, O. Brein, S. Heinemeyer, G. Weiglein, K.E. Williams, HiggsBounds 2.0.0: confronting neutral and charged Higgs sector predictions with exclusion bounds from LEP and the tevatron. Comput. Phys. Commun. 182, 2605–2631 (2011). arXiv:1102.1898
J. Espinosa, C. Grojean, M. Mühlleitner, M. Trott, First glimpses at Higgs’ face. JHEP 1212, 045 (2012). arXiv:1207.1717
LHC Higgs Cross Section Working Group, S. Dittmaier, et al., Handbook of LHC Higgs cross sections: 1. inclusive observables. arXiv:1101.0593
S. Dittmaier, S. Dittmaier, C. Mariotti, G. Passarino, R. Tanaka, et al.,Handbook of LHC Higgs cross sections: 2. differential distributions. arXiv:1201.3084
See: https://twiki.cern.ch/twiki/bin/view/LHCPhysics/CrossSections
D. de Florian, M. Grazzini, Higgs production through gluon fusion: updated cross sections at the Tevatron and the LHC. Phys. Lett. B674, 291–294 (2009). arXiv:0901.2427. See: http://theory.fi.infn.it/grazzini/hcalculators.html
T. Hahn, S. Heinemeyer, F. Maltoni, G. Weiglein, S. Willenbrock, SM and MSSM Higgs boson production cross-sections at the Tevatron and the LHC, hep-ph/0607308
T. Hahn, S. Heinemeyer, W. Hollik, H. Rzehak, G. Weiglein, FeynHiggs 2.7. Nucl. Phys. Proc. Suppl. 205-206 (2010) 152–157. arXiv:1007.0956
R. Bonciani, G. Degrassi, A. Vicini, Scalar particle contribution to Higgs production via gluon fusion at NLO. JHEP 0711, 095 (2007). arXiv:0709.4227
U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Analytic results for virtual QCD corrections to Higgs production and decay. JHEP 0701, 021 (2007). hep-ph/0611266
A. Dedes, P. Slavich, Two loop corrections to radiative electroweak symmetry breaking in the MSSM. Nucl. Phys. B657, 333–354 (2003). hep-ph/0212132
A. Dedes, G. Degrassi, P. Slavich, On the two loop Yukawa corrections to the MSSM Higgs boson masses at large tan beta. Nucl. Phys. B672, 144–162 (2003). hep-ph/0305127
S. Heinemeyer, W. Hollik, G. Weiglein, Decay widths of the neutral CP even MSSM Higgs bosons in the Feynman diagrammatic approach. Eur. Phys. J. C16,139–153 (2000). hep-ph/0003022
K.E. Williams, H. Rzehak, G. Weiglein, Higher order corrections to Higgs boson decays in the MSSM with complex parameters. Eur. Phys. J. C71, 1669 (2011). arXiv:1103.1335
Belle Collaboration, I. Adachi et al., Measurement of \(B^- \rightarrow \tau ^- \bar{\nu }_\tau \) with a hadronic tagging method using the full data sample of Belle. Phys. Rev. Lett. 110, 131801 (2013). arXiv:1208.4678
LHCb Collaboration, R. Aaij et al., Measurement of the \(B^0_s \rightarrow \mu ^+ \mu ^-\) decays at the LHCb experiment. Phys. Rev. Lett. 111, 101805 (2013). arXiv:1307.5024
CMS, LHCb Collaborations, Combination of results on the rare decays \(B^0_{(s)} \rightarrow \mu ^+\mu ^-\) from the CMS and LHCb experiments, Technical report CMS-PAS-BPH-13-007. CERN-LHCb-CONF-2013-012 (CERN, Geneva, Jul, 2013)
BaBar Collaboration, J. Lees et al., Evidence for an excess of \(\bar{B} \rightarrow D^{(*)} \tau ^-\bar{\nu }_\tau \) decays. Phys. Rev. Lett. 109, 101802 (2012). arXiv:1205.5442
F. Mahmoudi, SuperIso: a program for calculating the isospin asymmetry of \(B \rightarrow K^* \gamma \) in the MSSM. Comput. Phys. Commun. 178, 745–754 (2008). arXiv:0710.2067
F. Mahmoudi, SuperIso v2.3: a program for calculating flavor physics observables in supersymmetry. Comput. Phys. Commun. 180, 1579–1613 (2009). arXiv:0808.3144
F. Mahmoudi, SuperIso v3.0, flavor physics observables calculations: extension to NMSSM. Comput. Phys. Commun. 180, 1718–1719 (2009)
M. Misiak, M. Steinhauser, NNLO QCD corrections to the \(\bar{B} \rightarrow X_s \gamma \). Nucl. Phys. B764, 62–82 (2007). hep-ph/0609241
G. Degrassi, G. Giudice, QED logarithms in the electroweak corrections to the muon anomalous magnetic moment. Phys. Rev. D 58, 053007 (1998). hep-ph/9803384
S. Heinemeyer, D. Stöckinger, G. Weiglein, Two loop SUSY corrections to the anomalous magnetic moment of the muon. Nucl. Phys. B690, 62–80 (2004). hep-ph/0312264
S. Heinemeyer, D. Stöckinger, G. Weiglein, Electroweak and supersymmetric two-loop corrections to \((g-2)_{\mu }\). Nucl. Phys. B699, 103–123 (2004). hep-ph/0405255
M. Awramik, M. Czakon, A. Freitas, G. Weiglein, Precise prediction for the W boson mass in the standard model. Phys. Rev. D69, 053006 (2004). hep-ph/0311148
A. Djouadi, P. Gambino, S. Heinemeyer, W. Hollik, C. Junger, G. Weiglein, Supersymmetric contributions to electroweak precision observables: QCD corrections. Phys. Rev. Lett. 78, 3626 (1997). hep-ph/9612363
A. Djouadi, P. Gambino, S. Heinemeyer, W. Hollik, C. Junger, G. Weiglein, Leading QCD corrections to scalar quark contributions to electroweak precision observables. Phys. Rev. D57, 4179 (1998). hep-ph/9710438
S. Heinemeyer, W. Hollik, G. Weiglein, Electroweak precision observables in the minimal supersymmetric standard model. Phys. Rep. 425, 265–368 (2006). hep-ph/0412214
S. Heinemeyer, W. Hollik, G. Weiglein, L. Zeune, Implications of LHC search results on the W boson mass prediction in the MSSM. JHEP 1312, 084 (2013). arXiv:1311.1663
Heavy Flavor Averaging Group, Y. Amhis, et al., Averages of B-Hadron, C-Hadron, and Tau-lepton properties as of early 2012. arXiv:1207.1158. See: http://www.slac.stanford.edu/xorg/hfag
LHCb, CMS, ATLAS Collaborations, LHCb-CONF-2012-017, CMS-PAS-BPH-12-009, ATLAS-CONF-2012-061
Muon \(g-2\) Collaboration, G. Bennett et al., Measurement of the negative muon anomalous magnetic moment to 0.7 ppm. Phys. Rev. Lett. 92 (2004) 161802. hep-ex/0401008
M. Davier, A. Hoecker, B. Malaescu, Z. Zhang, Reevaluation of the hadronic contributions to the Muon \(g-2\) and to \(\alpha (M_Z^2)\). Eur. Phys. J. C71, 1515 (2011). arXiv:1010.4180
Muon G-2 Collaboration, G. Bennett et al., Final report of the Muon E821 anomalous magnetic moment measurement at BNL. Phys. Rev. D73, 072003 (2006). hep-ex/0602035
Tevatron Electroweak Working Group, 2012 Update of the combination of CDF and DØ results for the mass of the W boson. arXiv:1204.0042
ALEPH, DELPHI, L3, OPAL, SLD, LEP Electroweak Working Group, SLD Electroweak Group, SLD Heavy Flavour Group, S. Schael, et al., Precision electroweak measurements on the \(Z\) resonance. Phys. Rep. 427, 257–454 (2006). hep-ex/0509008. See: http://lepewwg.web.cern.ch/LEPEWWG/
P. Bechtle, S. Heinemeyer, O. Stål, T. Stefaniak, G. Weiglein, Probing the standard model with Higgs signal rates from the Tevatron, the LHC and a future ILC. arXiv:1403.1582
Heavy Flavor Averaging Group, See: www.slac.stanford.edu/xorg/hfag/rare/2013/radll/OUTPUT/HTML/radll_table7.html
U. Haisch, F. Mahmoudi, MSSM: cornered and correlated. JHEP 1301, 061 (2013). arXiv:1210.7806
ATLAS Collaboration, ATLAS-CONF-2013-108
CMS Collaboration, S. Chatrchyan et al., Evidence for the 125 GeV Higgs boson decaying to a pair of \(\tau \) leptons. arXiv:1401.5041
CMS Collaboration, CMS-PAS-HIG-11-029
S. Heinemeyer, O. Stål, G. Weiglein, Interpreting the LHC Higgs search results in the MSSM. Phys. Lett. B710, 201–206 (2012). arXiv:1112.3026
M. Drees, A supersymmetric explanation of the excess of Higgs-like events at the LHC and at LEP. Phys. Rev. D86, 115018 (2012). arXiv:1210.6507
J. Frere, D. Jones, S. Raby, Fermion masses and induction of the weak scale by supergravity. Nucl. Phys. B222, 11 (1983)
M. Claudson, L.J. Hall, I. Hinchliffe, Low-energy supergravity: false vacua and vacuous predictions. Nucl. Phys. B228, 501 (1983)
C. Kounnas, A. Lahanas, D.V. Nanopoulos, M. Quiros, Low-energy behavior of realistic locally supersymmetric grand unified theories. Nucl. Phys. B236, 438 (1984)
J. Gunion, H. Haber, M. Sher, Charge/color breaking minima and a-parameter bounds in supersymmetric models. Nucl. Phys. B306, 1 (1988)
J. Casas, A. Lleyda, C. Munoz, Strong constraints on the parameter space of the MSSM from charge and color breaking minima. Nucl. Phys. B471, 3–58 (1996). hep-ph/9507294
P. Langacker, N. Polonsky, Implications of Yukawa unification for the Higgs sector in supersymmetric grand unified models. Phys. Rev. D50, 2199–2217 (1994). hep-ph/9403306
A. Strumia, Charge and color breaking minima and constraints on the MSSM parameters. Nucl. Phys. B482, 24–38 (1996). hep-ph/9604417
R. Hempfling, Yukawa coupling unification with supersymmetric threshold corrections. Phys. Rev. D49, 6168–6172 (1994)
L.J. Hall, R. Rattazzi, U. Sarid, The Top quark mass in supersymmetric SO(10) unification. Phys. Rev. D50, 7048–7065 (1994). hep-ph/9306309
M.S. Carena, M. Olechowski, S. Pokorski, C. Wagner, Electroweak symmetry breaking and bottom—top Yukawa unification. Nucl. Phys. B426, 269–300 (1994). hep-ph/9402253
M.S. Carena, D. Garcia, U. Nierste, C.E. Wagner, Effective Lagrangian for the \(\bar{t} b H^{+}\) interaction in the MSSM and charged Higgs phenomenology. Nucl. Phys. B577, 88–120 (2000). hep-ph/9912516
D. Noth, M. Spira, Higgs boson couplings to bottom quarks: two-loop supersymmetry-QCD corrections. Phys. Rev. Lett. 101, 181801 (2008). arXiv:0808.0087
M. Carena, S. Gori, N.R. Shah, C.E. Wagner, L.-T. Wang, Light stau phenomenology and the Higgs \(\gamma \gamma \) rate. JHEP 1207, 175 (2012). arXiv:1205.5842
M. Carena, S. Gori, N.R. Shah, C.E. Wagner, A 125 GeV SM-like Higgs in the MSSM and the \(\gamma \gamma \) rate. JHEP 1203, 014 (2012). arXiv:1112.3336
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Zeune, L. (2016). Fitting the MSSM to the Observed Higgs Signal. In: Constraining Supersymmetric Models . Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-22228-8_7
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