Testing Higgs models via the H{sup {+-}}W{sup {-+}}Z vertex by a recoil method at the International Linear Collider

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.075018· OSTI ID:21537754

Kanemura, Shinya; Yagyu, Kei; Yanase, Kazuya ^[1]

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1. Department of Physics, University of Toyama, 3190 Gofuku, Toyama 930-8555 (Japan)

In general, charged Higgs bosons H{sup {+-}} appear in nonminimal Higgs models. The H{sup {+-}}W{sup {-+}}Z vertex is known to be related to the violation of the global symmetry (custodial symmetry) in the Higgs sector. Its magnitude strongly depends on the structure of the exotic Higgs models which contain higher isospin SU(2){sub L} representations such as triplet Higgs bosons. We study the possibility of measuring the H{sup {+-}}W{sup {-+}}Z vertex via single charged Higgs boson production associated with the W{sup {+-}} boson at the International Linear Collider (ILC) by using the recoil method. The feasibility of the signal e{sup +}e{sup -}{yields}H{sup {+-}}W{sup {-+}}{yields}l{nu}jj is analyzed assuming the polarized electron and positron beams and the expected detector performance for the resolution of the two-jet system at the ILC. The background events can be reduced to a considerable extent by imposing the kinematic cuts even if we take into account the initial state radiation. For a relatively light charged Higgs boson whose mass m{sub H}{sup {+-}} is in the region of 120-130 GeV <m{sub H}{sup {+-}}<m{sub W}+m{sub Z}, the H{sup {+-}}W{sup {-+}}Z vertex would be precisely testable especially when the decay of H{sup {+-}} is lepton specific. The exoticness of the extended Higgs sector can be explored by using combined information for this vertex and the rho parameter.

• OSTI ID: 21537754
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 7; Other Information: DOI: 10.1103/PhysRevD.83.075018; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ELECTRONS
GEV RANGE 100-1000
HIGGS BOSONS
HIGGS MODEL
ISOSPIN
LINEAR COLLIDERS
MASS
PARTICLE DECAY
POSITRON BEAMS
POSITRONS
RECOILS
RESOLUTION
SYMMETRY
TRIPLETS
W MINUS BOSONS
W PLUS BOSONS
Z NEUTRAL BOSONS
ACCELERATORS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BEAMS
BOSONS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEPTON BEAMS
LEPTONS
LINEAR ACCELERATORS
MATHEMATICAL MODELS
MATTER
MULTIPLETS
PARTICLE BEAMS
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES