Effects of Scalar and Pseudoscalar Higgs Bosons in the Process e{sup +}e{sup -} {yields} bb-bar{nu}{nu}-bar at the LEP II Collider

Journal Article · Thu Dec 01 04:00:00 EST 2005 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/1.2149089· OSTI ID:20692929

Likhoded, A A; Chalov, A E ^[1]

---

1. Institute for High Energy Physics, Protvino, Moscow oblast, 142281 (Russian Federation)

The possibility of setting constraints on the couplings of the scalar or pseudoscalar Higgs boson to b quarks on the basis of data on the process e{sup +}e{sup -} {yields} bb-bar{nu}{nu}-bar at the LEP II collider is investigated. The mixing of the scalar and the hypothetical pseudoscalar Higgs boson in the Hbb-bar vertex is parametrized in the form (m{sub b}/v)(a + i{gamma}{sub 5}b). An analysis of the differential distributions for the process e{sup +}e{sup -} {yields} bb-bar{nu}{nu}-bar reveals that the contribution of the fusion subprocess WW {yields} H in the channel involving an electron neutrino enhances the sensitivity of data to the parameters under analysis. It is shown that the LEP II data at {radical}(s) = 200 GeV and {integral} Ldt = 600 pb{sup -1} per experiment would make it possible to constrain the parameters {delta}a=a - 1 and b as follows: -0.75 {<=} {delta}a {<=} 1.4 at b = 0 and free {delta}a and -0.97 {<=} b {<=} 0.97 at {delta}a = 0 and free b.

• OSTI ID: 20692929
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 12 Vol. 68; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
DISTRIBUTION
ELECTRON NEUTRINOS
ELECTRON-POSITRON INTERACTIONS
GEV RANGE
HIGGS BOSONS
INCLUSIVE INTERACTIONS
LEP STORAGE RINGS
SCALARS
STANDARD MODEL
SYMMETRY BREAKING
W MINUS BOSONS
W PLUS BOSONS