Decays of Z boson into pseudoscalar meson pair of different flavours

Journal Article · Wed Mar 05 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4866930· OSTI ID:22265998

Chia, Swee-Ping ^[1]

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1. High Impact Research, University of Malaya, 50603 Kuala Lumpur (Malaysia)

We analyse the process Z°→M{sub 1}M{sub 2}, where M{sub 1} and M{sub 2} are pseudoscalar mesons with quark contents of q{sub 1}q{sup ¯} and qq{sup ¯}{sub 2} respectively. At the quark level, the process Z°→q{sub 1}q{sup ¯}{sub 2}, where q{sub 1} and q{sub 2} are quarks of different flavours, receives contribution only from the Z-penguin. In order to fold the quark-level process to the hadronic process, we make the fundamental assumption that the vertex of type Mqq{sup ¯} can be approximated by an effective constant γ5 coupling. With this assumption, estimates are obtained for the cross-sections for the following processes: Z°→K{sup −}π{sup +}, Z°→B{sup −}K{sup +}.

• OSTI ID: 22265998
• Journal Information: AIP Conference Proceedings, Vol. 1588, Issue 1; Conference: 4. international meeting on frontiers in physics, Kuala Lumpur (Malaysia), 27-30 Aug 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
COUPLING
CROSS SECTIONS
DECAY
FLAVOR MODEL
PSEUDOSCALAR MESONS
QUARKS
Z NEUTRAL BOSONS