Abstract
We study contributions to \( pp\to {W}^{+}{W}^{-}\to \ell {\nu}_{\ell }{\ell}^{\prime }{\nu}_{\ell^{\prime }} \) in models with a new Higgs boson, H, and a neutral lepton, ν4, with couplings H − ν4 − ν μ and W − ν4 − \( \mu \) through the process pp → H → ν4ν μ → Wμν μ → ℓν ℓ μν μ . Contrary to naive expectations, we find that contributions to pp → W W can be very large while satisfying constraints from standard H → W W and H → γγ searches. Even the excess observed by ATLAS in pp → W W , if taken at face value, can be easily accommodated. The various kinematic distributions fit nicely the experimentally determined ones. This scenario can arise for example in a two Higgs doublet model with vectorlike leptons.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
ATLAS collaboration, Measurement of the W + W − production cross section in proton-proton collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, ATLAS-CONF-2014-033, CERN, Geneva Switzerland (2014) [ATLAS-COM-CONF-2014-045].
P. Nason, A new method for combining NLO QCD with shower Monte Carlo algorithms, JHEP 11 (2004) 040 [hep-ph/0409146] [INSPIRE].
S. Frixione, P. Nason and C. Oleari, Matching NLO QCD computations with parton shower simulations: the POWHEG method, JHEP 11 (2007) 070 [arXiv:0709.2092] [INSPIRE].
S. Alioli, P. Nason, C. Oleari and E. Re, A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX, JHEP 06 (2010) 043 [arXiv:1002.2581] [INSPIRE].
T. Melia, P. Nason, R. Rontsch and G. Zanderighi, W + W − , W Z and ZZ production in the POWHEG BOX, JHEP 11 (2011) 078 [arXiv:1107.5051] [INSPIRE].
P. Nason and G. Zanderighi, W + W − , W Z and ZZ production in the POWHEG-BOX-V 2, Eur. Phys. J. C 74 (2014) 2702 [arXiv:1311.1365] [INSPIRE].
J.M. Campbell, R.K. Ellis and C. Williams, Vector boson pair production at the LHC, JHEP 07 (2011) 018 [arXiv:1105.0020] [INSPIRE].
CMS collaboration, Measurement of W + W − and ZZ production cross sections in pp collisions at \( \sqrt{s}=8 \) TeV, Phys. Lett. B 721 (2013) 190 [arXiv:1301.4698] [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].
D. Curtin, P. Jaiswal and P. Meade, Charginos hiding in plain sight, Phys. Rev. D 87 (2013) 031701 [arXiv:1206.6888] [INSPIRE].
P. Jaiswal, K. Kopp and T. Okui, Higgs production amidst the LHC detector, Phys. Rev. D 87 (2013) 115017 [arXiv:1303.1181] [INSPIRE].
K. Rolbiecki and K. Sakurai, Light stops emerging in W W cross section measurements?, JHEP 09 (2013) 004 [arXiv:1303.5696] [INSPIRE].
D. Curtin, P. Jaiswal, P. Meade and P.-J. Tien, Casting light on BSM physics with SM standard candles, JHEP 08 (2013) 068 [arXiv:1304.7011] [INSPIRE].
D. Curtin, P. Meade and P.-J. Tien, Natural SUSY in plain sight, Phys. Rev. D 90 (2014) 115012 [arXiv:1406.0848] [INSPIRE].
J.S. Kim, K. Rolbiecki, K. Sakurai and J. Tattersall, ‘Stop’ that ambulance! New physics at the LHC?, JHEP 12 (2014) 010 [arXiv:1406.0858] [INSPIRE].
CMS collaboration, Measurement of the W +W − cross section in pp collisions at \( \sqrt{s}=8 \) TeV and limits on anomalous gauge couplings,CMS-PAS-SMP-14-016,CERN, Geneva Switzerland (2014).
P. Meade, H. Ramani and M. Zeng, Transverse momentum resummation effects in W + W − measurements, Phys. Rev. D 90 (2014) 114006 [arXiv:1407.4481] [INSPIRE].
P. Jaiswal and T. Okui, Explanation of the W W excess at the LHC by jet-veto resummation, Phys. Rev. D 90 (2014) 073009 [arXiv:1407.4537] [INSPIRE].
T. Gehrmann et al., W + W − production at hadron colliders in next to next to leading order QCD, Phys. Rev. Lett. 113 (2014) 212001 [arXiv:1408.5243] [INSPIRE].
P.F. Monni and G. Zanderighi, On the excess in the inclusive \( {W}^{+}{W}^{-}\to {\ell}^{+}{\ell}^{-}\nu \overline{\nu} \) cross section, JHEP 05 (2015) 013 [arXiv:1410.4745] [INSPIRE].
R. Dermisek and A. Raval, Explanation of the muon g-2 anomaly with vectorlike leptons and its implications for Higgs decays, Phys. Rev. D 88 (2013) 013017 [arXiv:1305.3522] [INSPIRE].
R. Dermisek, A. Raval and S. Shin, Effects of vectorlike leptons on h → 4ℓ and the connection to the muon g-2 anomaly, Phys. Rev. D 90 (2014) 034023 [arXiv:1406.7018] [INSPIRE].
R. Dermisek, E. Lunghi and S. Shin, Two Higgs doublet model with vectorlike leptons and contributions to pp → W W and H → W W , to appear.
P.S. Bhupal Dev, R. Franceschini and R.N. Mohapatra, Bounds on TeV seesaw models from LHC Higgs data, Phys. Rev. D 86 (2012) 093010 [arXiv:1207.2756] [INSPIRE].
CMS collaboration, Evidence for a particle decaying to W + W − in the fully leptonic final state in a standard model Higgs boson search in pp collisions at the LHC, CMS-PAS-HIG-13-003, CERN, Geneva Switzerland (2013).
CMS collaboration, Measurement of Higgs boson production and properties in the W W decay channel with leptonic final states, JHEP 01 (2014) 096 [arXiv:1312.1129] [INSPIRE].
CMS collaboration, Search for an Higgs like resonance in the diphoton mass spectra above 150 GeV with 8 TeV data, CMS-PAS-HIG-14-006, CERN, Geneva Switzerland (2014).
R. Dermíšek, J.P. Hall, E. Lunghi and S. Shin, Limits on vectorlike leptons from searches for anomalous production of multi-lepton events, JHEP 12 (2014) 013 [arXiv:1408.3123] [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].
M. Cacciari and G.P. Salam, Dispelling the N 3 myth for the k t jet-finder, Phys. Lett. B 641 (2006) 57 [hep-ph/0512210] [INSPIRE].
M. Cacciari, G.P. Salam and G. Soyez, FastJet user manual, Eur. Phys. J. C 72 (2012) 1896 [arXiv:1111.6097] [INSPIRE].
C. Degrande, C. Duhr, B. Fuks, D. Grellscheid, O. Mattelaer and T. Reiter, UFO — the Universal FeynRules Output, Comput. Phys. Commun. 183 (2012) 1201 [arXiv:1108.2040] [INSPIRE].
R. Dermisek, J.P. Hall, E. Lunghi and S. Shin, A new avenue to charged Higgs discovery in multi-Higgs models, JHEP 04 (2014) 140 [arXiv:1311.7208] [INSPIRE].
Open Access
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 1503.08829
Rights and permissions
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
About this article
Cite this article
Dermíšek, R., Lunghi, E. & Shin, S. Contributions of flavor violating couplings of a Higgs boson to pp → W W. J. High Energ. Phys. 2015, 126 (2015). https://doi.org/10.1007/JHEP08(2015)126
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP08(2015)126