Abstract
Measurements of the Yukawa couplings of the recently discovered boson h to fermion pairs will provide a new arena for studying flavor physics. We analyze the lessons that can be learned by measuring the h decay rates into the charged lepton pairs, τ +τ −, μ + μ − and τ ± μ ∓. We demonstrate how this set of measurements can distinguish in principle between various classes of flavor models such as natural flavor conservation, minimal flavor violation, and Froggatt-Nielsen symmetry.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
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 (2012) 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].
D. Carmi, A. Falkowski, E. Kuflik and T. Volansky, Interpreting the Higgs, arXiv:1206.4201 [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, Search for the Standard Model Higgs boson in H → τ τ decays in proton-proton collisions with the ATLAS detector, ATLAS-CONF-2012-160 (2012).
CMS collaboration, Higgs to tau tau (SM) (HCP), CMS-PAS-HIG-12-043 (2012).
T. Han and D. Marfatia, h → μτ at hadron colliders, Phys. Rev. Lett. 86 (2001) 1442 [hep-ph/0008141] [INSPIRE].
U. Cotti, L. Diaz-Cruz, C. Pagliarone and E. Vataga, Search for the lepton flavor violating Higgs decay H → τ μ at hadron colliders, eConf C 010630 (2001) P102 [hep-ph/0111236] [INSPIRE].
K.A. Assamagan, A. Deandrea and P.-A. Delsart, Search for the lepton flavor violating decay A 0 /H 0 → τ ± μ ∓ at hadron colliders, Phys. Rev. D 67 (2003) 035001 [hep-ph/0207302] [INSPIRE].
S. Arcelli, Search for H/A → μμ and τ μ at the LHC, Eur. Phys. J. C 33 (2004) S726 [INSPIRE].
A. Goudelis, O. Lebedev and J.-h. Park, Higgs-induced lepton flavor violation, Phys. Lett. B 707 (2012) 369 [arXiv:1111.1715] [INSPIRE].
G. Blankenburg, J. Ellis and G. Isidori, Flavour-Changing Decays of a 125 GeV Higgs-like Particle, Phys. Lett. B 712 (2012) 386 [arXiv:1202.5704] [INSPIRE].
R. Harnik, J. Kopp and J. Zupan, Flavor Violating Higgs Decays, JHEP 03 (2013) 026 [arXiv:1209.1397] [INSPIRE].
S. Davidson and P. Verdier, LHC sensitivity to the decay h → τ ± mu ∓, Phys. Rev. D 86 (2012) 111701 [arXiv:1211.1248] [INSPIRE].
A. Arhrib, Y. Cheng and O.C. Kong, A Comprehensive Analysis on Lepton Flavor Violating Higgs to μτ + τ m¯u Decay in Supersymmetry without R Parity, Phys. Rev. D 87 (2013) 015025 [arXiv:1210.8241] [INSPIRE].
C.-W. Chiang, T. Nomura and J. Tandean, Effects of Family Nonuniversal Z’ Boson on Leptonic Decays of Higgs and Weak Bosons, arXiv:1302.2894 [INSPIRE].
A. Denner, S. Heinemeyer, I. Puljak, D. Rebuzzi and M. Spira, Standard Model Higgs-Boson Branching Ratios with Uncertainties, Eur. Phys. J. C 71 (2011) 1753 [arXiv:1107.5909] [INSPIRE].
Particle Data Group collaboration, J. Beringer et al., Review of Particle Physics (RPP), Phys. Rev. D 86 (2012) 010001 [INSPIRE].
D.Y. Bardin, B. Vilensky and P.K. Khristova, Calculation of the Higgs boson decay width into fermion pairs, Sov. J. Nucl. Phys. 53 (1991) 152 [Yad. Fiz. 53 (1991) 240] [INSPIRE].
A. Dabelstein and W. Hollik, Electroweak corrections to the fermionic decay width of the standard Higgs boson, Z. Phys. C 53 (1992) 507 [INSPIRE].
B.A. Kniehl, Radiative corrections for \( H\to f\overline{f}\left( \gamma \right) \) in the standard model, Nucl. Phys. B 376 (1992) 3 [INSPIRE].
B.A. Kniehl, Higgs phenomenology at one loop in the standard model, Phys. Rept. 240 (1994) 211 [INSPIRE].
A. Djouadi, The Anatomy of electro-weak symmetry breaking. I: The Higgs boson in the standard model, Phys. Rept. 457 (2008) 1 [hep-ph/0503172] [INSPIRE].
A.J. Buras, J. Girrbach, D. Guadagnoli and G. Isidori, On the Standard Model prediction for BR(Bs,d to μ + μ − ), Eur. Phys. J. C 72 (2012) 2172 [arXiv:1208.0934] [INSPIRE].
H. Arason, D. Castano, B. Keszthelyi, S. Mikaelian et al., Renormalization group study of the standard model and its extensions. 1. The Standard model, Phys. Rev. D 46 (1992) 3945 [INSPIRE].
Muon G-2 collaboration, G. Bennett et al., Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL, Phys. Rev. D 73 (2006) 072003 [hep-ex/0602035] [INSPIRE].
ATLAS collaboration, Search for the neutral Higgs bosons of the Minimal Supersymmetric Standard Model in pp collisions at \( \sqrt{s}=7 \) TeV with the ATLAS detector, JHEP 02 (2013) 095 [arXiv:1211.6956] [INSPIRE].
CMS collaboration, Search for Neutral MSSM Higgs Bosons in the mu+mu- final state with the CMS experiment in pp Collisions at \( \sqrt{s}=7 \) TeV, CMS-PAS-HIG-12-011 (2012).
T. Plehn and D.L. Rainwater, Higgs decays to muons in weak boson fusion, Phys. Lett. B 520 (2001) 108 [hep-ph/0107180] [INSPIRE].
K. Cranmer and T. Plehn, Maximum significance at the LHC and Higgs decays to muons, Eur. Phys. J. C 51 (2007) 415 [hep-ph/0605268] [INSPIRE].
LHC Higgs Cross Section Working Group collaboration, S. Dittmaier et al., Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables, arXiv:1101.0593 [INSPIRE].
ATLAS collaboration, Physics at a High-Luminosity LHC with ATLAS (Update), ATL-PHYS-PUB-2012-004 (2012).
S.L. Glashow and S. Weinberg, Natural Conservation Laws for Neutral Currents, Phys. Rev. D 15 (1977) 1958 [INSPIRE].
E. Paschos, Diagonal Neutral Currents, Phys. Rev. D 15 (1977) 1966 [INSPIRE].
G. Branco et al., Theory and phenomenology of two-Higgs-doublet models, Phys. Rept. 516 (2012) 1 [arXiv:1106.0034] [INSPIRE].
G. D’Ambrosio, G. Giudice, G. Isidori and A. Strumia, Minimal flavor violation: An Effective field theory approach, Nucl. Phys. B 645 (2002) 155 [hep-ph/0207036] [INSPIRE].
C. Froggatt and H.B. Nielsen, Hierarchy of Quark Masses, Cabibbo Angles and CP-violation, Nucl. Phys. B 147 (1979) 277 [INSPIRE].
Y. Grossman and Y. Nir, Lepton mass matrix models, Nucl. Phys. B 448 (1995) 30 [hep-ph/9502418] [INSPIRE].
M. Leurer, Y. Nir and N. Seiberg, Mass matrix models: The Sequel, Nucl. Phys. B 420 (1994) 468 [hep-ph/9310320] [INSPIRE].
G.F. Giudice and O. Lebedev, Higgs-dependent Yukawa couplings, Phys. Lett. B 665 (2008) 79 [arXiv:0804.1753] [INSPIRE].
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 1302.3229
Rights and permissions
About this article
Cite this article
Dery, A., Efrati, A., Hochberg, Y. et al. What if \( \mathrm{BR}\left( {h\to \mu \mu } \right)/\mathrm{BR}\left( {h\to \tau \tau } \right)\ne m_{\mu}^2/m_{\tau}^2 \) ?. J. High Energ. Phys. 2013, 39 (2013). https://doi.org/10.1007/JHEP05(2013)039
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP05(2013)039