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Titolo:
Large effects on B-s(B)over-bar(s) mixing by vectorlike quarks - art. no. 117305
Autore:
Aoki, M; Cho, GC; Nagashima, M; Oshimo, N;
Indirizzi:
KEK, Theory Grp, Tsukuba, Ibaraki 3050801, Japan KEK Tsukuba Ibaraki Japan 3050801 ry Grp, Tsukuba, Ibaraki 3050801, Japan Ochanomizu Univ, Dept Phys, Bunkyo Ku, Tokyo 1128610, Japan Ochanomizu Univ Tokyo Japan 1128610 hys, Bunkyo Ku, Tokyo 1128610, Japan Ochanomizu Univ, Grad Sch Humanities & Sci, Bunkyo Ku, Tokyo 1128610, Japan Ochanomizu Univ Tokyo Japan 1128610 Sci, Bunkyo Ku, Tokyo 1128610, Japan
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 11, volume: 6411, anno: 2001,
pagine: 7305 -
SICI:
0556-2821(200112)6411:11<7305:LEOBMB>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHANGING NEUTRAL CURRENTS; B-MESON DECAY; CP ASYMMETRIES; PHYSICS; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Aoki, M KEK, Theory Grp, Tsukuba, Ibaraki 3050801, Japan KEK Tsukuba Ibaraki Japan 3050801 Tsukuba, Ibaraki 3050801, Japan
Citazione:
M. Aoki et al., "Large effects on B-s(B)over-bar(s) mixing by vectorlike quarks - art. no. 117305", PHYS REV D, 6411(11), 2001, pp. 7305

Abstract

We calculate the contributions of the vectorlike quark model to B-s(B) over bar (s) mixing, taking into account the constraints from the decay B-X(s)gamma. In this model the neutral bosons mediate flavor-changing interactions at the tree level. However. B-s(B) over bar (s) mixing is dominated by contributions from the box diagrams with the top quark and the extra up-type quark. In sizable ranges of the model parameters, the mixing parameter x(s)is much different from the standard model prediction.

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Documento generato il 22/01/20 alle ore 21:47:27