Abstract
The Higgs boson decay into a pair of real or virtual W bosons, with one of them decaying leptonically, is predicted within the Standard Model to have the largest branching fraction of all Higgs decays that involve an isolated electron or muon, for M h > 120 GeV. We compute analytically the fully-differential width for this h 0→ℓνjj decay at tree level, and then explore some multi-dimensional cuts that preserve the region of large signal. Future searches for semileptonic decays at the Tevatron and LHC, employing fully-differential information as outlined here, may be essential for ruling out or in the Higgs boson and for characterizing a Higgs signal.
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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] [SPIRES].
Particle Data Group collaboration, C. Amsler et al., Review of particle physics, Phys. Lett. B 667 (2008) 1 [SPIRES].
TEVNPH Working Group, for the CDF and D0 collaborations, Combined CDF and D0 Upper Limits on Standard Model Higgs- Boson Production with 2.1 - 5.4 fb-1 of Data, arXiv:0911.3930 [SPIRES].
CDF and D0 collaboration, T. Aaltonen et al., Combination of Tevatron searches for the standard model Higgs boson in the W + W − decay mode, Phys. Rev. Lett. 104 (2010) 061802 [1001.4162] [SPIRES].
T. Han and R.-J. Zhang, Extending the Higgs boson reach at upgraded Tevatron, Phys. Rev. Lett. 82 (1999) 25 [hep-ph/9807424] [SPIRES].
T. Han, A.S. Turcot and R.-J. Zhang, Exploiting h → W*W* decays at the upgraded Fermilab Tevatron, Phys. Rev. D 59 (1999) 093001 [hep-ph/9812275] [SPIRES].
Higgs Working Group collaboration, M.S. Carena et al., Report of the Tevatron Higgs working group, hep-ph/0010338 [SPIRES].
W.J. Stirling, R. Kleiss and S.D. Ellis, W+ W- Pair Production in High-Energy Hadronic Collisions: Signal Versus Background, Phys. Lett. B 163 (1985) 261 [SPIRES].
J.F. Gunion, P. Kalyniak, M. Soldate and P. Galison, Hunting for the intermediate mass Higgs boson in a hadron collider, Phys. Rev. Lett. 54 (1985) 1226 [SPIRES].
R.N. Cahn, The Higgs Boson, Rept. Prog. Phys. 52 (1989) 389 [SPIRES].
J.F. Gunion and M. Soldate, Overcoming a Critical Background to Higgs Detection, Phys. Rev. D 34 (1986) 826 [SPIRES].
ATLAS collaboration, G. Aad et al., Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics, arXiv:0901.0512 [SPIRES].
CMS collaboration, G.L. Bayatian et al., CMS technical design report, volume II: Physics performance, J. Phys. G 34 (2007) 995 [SPIRES].
D0 collaboration, Search for Higgs boson production in dilepton plus missing transverse energy final states with 5.4 fb −1 of \( p\overline p \) collisions at √s = 1.96TeV, D0 note 6006-CONF, November 2009.
CDF collaboration, Search for H → WW* production at CDF using 4.8 fb −1 of data, CDF note 9887, August 2009.
K. Iordanidis and D. Zeppenfeld, Searching for a heavy Higgs boson via the H → lepton neutrino jet jet mode at the CERN LHC, Phys. Rev. D 57 (1998) 3072 [hep-ph/9709506] [SPIRES].
B. Mellado, W. Quayle and S.L. Wu, Feasibility of Searches for a Higgs Boson using H → WW → ll+MET and High P T Jets at the Tevatron, Phys. Rev. D 76 (2007) 093007 [arXiv:0708.2507] [SPIRES].
J. Winter et al., Monte Carlo studies of semileptonic decays of the Standard Model Higgs boson at the Tevatron, to appear.
V.D. Barger, G. Bhattacharya, T. Han and B.A. Kniehl, Intermediate mass Higgs boson at hadron supercolliders, Phys. Rev. D 43 (1991) 779 [SPIRES].
V.D. Barger, K.-m. Cheung, A. Djouadi, B.A. Kniehl and P.M. Zerwas, Higgs bosons: Intermediate mass range at e + e − colliders, Phys. Rev. D 49 (1994) 79 [hep-ph/9306270] [SPIRES].
C.P. Buszello, I. Fleck, P. Marquard and J.J. van der Bij, Prospective analysis of spin- and CP-sensitive variables in H → ZZ → l +1 l −1 l +2 l −2 at the LHC, Eur. Phys. J. C 32 (2004) 209 [hep-ph/0212396] [SPIRES].
A. De Rujula, J. Lykken, M. Pierini, C. Rogan and M. Spiropulu, Higgs look-alikes at the LHC, 1001.5300 [SPIRES].
A. Bredenstein, A. Denner, S. Dittmaier and M.M. Weber, Radiative corrections to the semileptonic and hadronic Higgs-boson decays H → WW/ZZ → 4 fermions, JHEP 02 (2007) 080 [hep-ph/0611234] [SPIRES].
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ArXiv ePrint: 0912.3543
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Dobrescu, B.A., Lykken, J.D. Semileptonic decays of the standard Higgs boson. J. High Energ. Phys. 2010, 83 (2010). https://doi.org/10.1007/JHEP04(2010)083
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DOI: https://doi.org/10.1007/JHEP04(2010)083