Semileptonic decays of the Bc meson

被引：20

作者：

Barik, N. ^{[1
]}

Naimuddin, Sk. ^{[2
]}

Dash, P. C. ^{[3
]}

Kar, Susmita ^{[4
]}

机构：

[1] Utkal Univ, Dept Phys, Bhubaneswar 751004, Orissa, India

[2] Maharishi Coll Nat Law, Dept Phys, Bhubaneswar 751007, Orissa, India

[3] Prananath Autonomous Coll, Dept Phys, Khurja 752057, India

[4] N Orissa Univ, Dept Phys, Baripada 757003, India

来源：

PHYSICAL REVIEW D | 2009年 / 80卷 / 07期

关键词：

WEAK DECAYS; NONLEPTONIC DECAYS; RADIATIVE DECAY; LEPTONIC DECAY; VERTICAL-BAR; QUARK-MODEL; LIGHT; PROSPECTS; LIFETIME; QCD;

D O I：

10.1103/PhysRevD.80.074005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the semileptonic transitions B-c -> eta(c), J/Psi, D, D*, B, B*, B-s, B-s* in the leading order in the framework of a relativistic independent quark model based on a confining potential in the equally mixed scalar-vector harmonic form. We compute relevant weak form factors as overlap integrals of the meson-wave functions obtained in the relativistic independent quark model in the whole accessible kinematical range. We predict that the semileptonic transitions of the B-c meson are mostly dominated by two Cabibbo-Kobayashi-Maskawa (CKM)-favored modes, B-c -> B-s(B-s*)e nu, contributing about 77% of the total decay width, and its decays to vector meson final states take place in the predominantly transverse mode. Our predicted values for the total decay rates, branching ratios, polarization ratios, the forward-backward asymmetry factor, etc., are broadly in agreement with other model predictions.

引用

页数：12

共 61 条

[1] Semileptonic and nonleptonic Bc decays -: art. no. 014019 [J].

Abd El-Hady, A ;

Muñoz, JH ;

Vary, JP .

PHYSICAL REVIEW D, 2000, 62 (01) :6

[2]

Abe F, 1998, PHYS REV D, V58, DOI 10.1103/PhysRevD.58.112004

[3] Observation of the Bc meson in p(p)over-bar collisions at √s=1.8 TeV [J].

Abe, F ;

Akimoto, H ;

Akopian, A ;

Albrow, MG ;

Amadon, A ;

Amendolia, SR ;

Amidei, D ;

Antos, J ;

Aota, S ;

Apollinari, G ;

Arisawa, T ;

Asakawa, T ;

Ashmanskas, W ;

Atac, M ;

Azzi-Bacchetta, P ;

Bacchetta, N ;

Bagdasarov, S ;

Bailey, MW ;

de Barbaro, P ;

Barbaro-Galtieri, A ;

Barnes, VE ;

Barnett, BA ;

Barone, M ;

Bauer, G ;

Baumann, T ;

Bedeschi, F ;

Behrends, S ;

Belforte, S ;

Bellettini, G ;

Bellinger, J ;

Benjamin, D ;

Bensinger, J ;

Beretvas, A ;

Berge, JP ;

Berryhill, J ;

Bertolucci, S ;

Bettelli, S ;

Bevensee, B ;

Bhatti, A ;

Biery, K ;

Bigongiari, C ;

Binkley, M ;

Bisello, D ;

Blair, RE ;

Blocker, C ;

Blusk, S ;

Bodek, A ;

Bokhari, W ;

Bolla, G ;

Bonushkin, Y .

PHYSICAL REVIEW LETTERS, 1998, 81 (12) :2432-2437

[4] Review of particle physics [J].

Amsler, C. ;

Doser, M. ;

Antonelli, M. ;

Asner, D. M. ;

Babu, K. S. ;

Baer, H. ;

Band, H. R. ;

Barnett, R. M. ;

Bergren, E. ;

Beringer, J. ;

Bernardi, G. ;

Bertl, W. ;

Bichsel, H. ;

Biebel, O. ;

Bloch, P. ;

Blucher, E. ;

Blusk, S. ;

Cahn, R. N. ;

Carena, M. ;

Caso, C. ;

Cecccci, A. ;

Chakraborty, D. ;

Chen, M. -C. ;

Chivukula, R. S. ;

Cowan, G. ;

Dahl, O. ;

D'Ambrosio, G. ;

Damour, T. ;

de Gouvea, A. ;

DeGrand, T. ;

Dobrescu, B. ;

Drees, M. ;

Edwards, D. A. ;

Eidelman, S. ;

Elvira, V. D. ;

Erler, J. ;

Ezhela, V. V. ;

Feng, J. L. ;

Fetscher, W. ;

Fields, B. D. ;

Foster, B. ;

Gaisser, T. K. ;

Garren, L. ;

Gerber, H. -J. ;

Gerbier, G. ;

Gherghetta, T. ;

Giudice, G. F. ;

Goodman, M. ;

Grab, C. ;

Gritsan, A. V. .

PHYSICS LETTERS B, 2008, 667 (1-5) :1-+

[5]

ANIKEEV K, ARXIVHEPPH0201071

[6]

Anisimov AY, 1999, PHYS ATOM NUCL+, V62, P1739

[7] The Bc meson lifetime in the light-front constituent quark model [J].

Anisimov, AY ;

Narodetskii, IM ;

Semay, C ;

Silvestre-Brac, B .

PHYSICS LETTERS B, 1999, 452 (1-2) :129-136

[8] Exclusive semileptonic decays of charmed and b-flavored mesons [J].

Barik, N ;

Tripathy, SK ;

Kar, S ;

Dash, PC .

PHYSICAL REVIEW D, 1997, 56 (07) :4238-4249

[9] THE (QQBAR)-PION AND ITS DECAY CONSTANT IN A CHIRAL POTENTIAL MODEL [J].

BARIK, N ;

DASH, BK ;

DASH, PC .

PRAMANA, 1987, 29 (06) :543-557

[10] RADIATIVE LEPTONIC DECAY OF Ds AND D MESONS [J].

Barik, N. ;

Naimuddin, S. K. ;

Dash, P. C. .

INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2009, 24 (12) :2335-2355

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