[ital CP]-violating polarizations in semileptonic heavy meson decays

Journal Article · Wed Feb 01 04:00:00 EST 1995 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.51.1107· OSTI ID:6604889

Garisto, R ^[1]

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1. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)

We study the [ital T]-violating lepton transverse polarization ([ital P][sub [ital l]][sup [perpendicular]]) in three body semileptonic heavy meson decays to pseudoscalar mesons and to vector mesons. We calculate these polarizations in the heavy quark effective limit, which simplifies the expressions considerably. After examining constraints from [ital CP]-conserving (including [ital b][r arrow][ital s][gamma]) and [ital CP]-violating processes, we find that in [ital B] decays [ital P][sup [perpendicular]] of the muon in multi-Higgs-doublet models can be of order 13%, while [ital P][sup [perpendicular]] of the [tau] can even approach unity. In contrast, [ital P][sub [mu]][sup [perpendicular]] in [ital D] decays is at most 1.5%. We discuss possibilities for detection of [ital P][sub [ital l]][sup [perpendicular]] at current and future [ital B] factories. We also show that [ital P][sub [ital l]][sup [perpendicular]] in decays to vector mesons, unlike in decays to pseudoscalars, can get contributions from left-right models. Unfortunately, [ital P][sub [ital l]][sup [perpendicular]] in that case is proportional to [ital W][sub [ital L]-][ital W][sub [ital R]] mixing, and is thus small.

• OSTI ID: 6604889
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 51:3; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

662120* -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662350 -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
BEAUTY PARTICLES
BOSONS
CONSTRAINTS
CP INVARIANCE
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HIGGS MODEL
INVARIANCE PRINCIPLES
LEPTONS
MATHEMATICAL MODELS
MESONS
MUONS
PARTICLE DECAY
PARTICLE MODELS
POLARIZATION
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
T INVARIANCE
VECTOR MESONS
VIOLATIONS
WEAK PARTICLE DECAY