QCD CORRECTIONS TO CHARGED HIGGS-MEDIATED B-]C-TAU-NU DECAY

被引：55

作者：

GROSSMAN, Y

HABER, HE

NIR, Y

机构：

[1] CERN,DIV TH,CH-1211 GENEVA 23,SWITZERLAND

[2] UNIV CALIF SANTA CRUZ,INST PARTICLE PHYS,SANTA CRUZ,CA 95064

来源：

PHYSICS LETTERS B | 1995年 / 357卷 / 04期

关键词：

D O I：

10.1016/0370-2693(95)00946-I

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the O(alpha(s)) corrections to the charged Higgs mediated inclusive semi-tauonic B decay. By working in the Landau gauge, we demonstrate how to obtain the charged Higgs contributions (both direct and interference terms) from the known QCD corrections to t --> bH(+). Combining our results with O(1/m(b)(2)) corrections to the spectator model and comparing the theoretical prediction with the recent experimental measurements, we find a model-independent 2 sigma upper bound on the ratio of Higgs vacuum expectation values, tan beta < 0.52 (m(H)/1 GeV).

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收藏

页码：630 / 636

页数：7

相关论文

共 32 条

[11] LEPTON SPECTRUM IN SEMI-LEPTONIC CHARM DECAY [J].

CABIBBO, N ;

CORBO, G ;

MAIANI, L .

NUCLEAR PHYSICS B, 1979, 155 (01) :93-103

[12] LIFETIME OF CHARMED PARTICLES [J].

CABIBBO, N ;

MAIANI, L .

PHYSICS LETTERS B, 1978, 79 (01) :109-111

[13] 2-LOOP RENORMALIZATION-GROUP ANALYSIS OF HADRONIC DECAYS OF A CHARGED-HIGGS-BOSON [J].

CZARNECKI, A ;

DAVYDYCHEV, AI .

PHYSICS LETTERS B, 1994, 325 (3-4) :435-440

[14] QCD CORRECTIONS TO THE CHARGED-HIGGS-BOSON DECAY OF A HEAVY-QUARK [J].

CZARNECKI, A ;

DAVIDSON, S .

PHYSICAL REVIEW D, 1993, 48 (09) :4183-4187

[15]

CZARNECKI A, 1995, PHYS LETT B, V346, P355

[16] HEAVY-QUARK EXPANSION FOR THE INCLUSIVE DECAY (B)OVER-BAR-]TAU(NU-OVER-BARX [J].

FALK, AF ;

LIGETI, Z ;

NEUBERT, M ;

NIR, Y .

PHYSICS LETTERS B, 1994, 326 (1-2) :145-153

[17] SUPERSYMMETRIC B-]S-GAMMA WITH LARGE CHARGING CONTRIBUTIONS [J].

GARISTO, R ;

NG, JN .

PHYSICS LETTERS B, 1993, 315 (3-4) :372-378

[18] TRANSVERSE TAU-POLARIZATION IN INCLUSIVE (B)OVER-BAR-]TAU(NU)OVER-BARX DECAYS [J].

GROSSMAN, Y ;

LIGETI, Z .

PHYSICS LETTERS B, 1995, 347 (3-4) :399-404

[19] THE INCLUSIVE (B)OVER-BAR-]TAU(NU)OVER-BAR-X DECAY IN 2 HIGGS DOUBLET MODELS [J].

GROSSMAN, Y ;

LIGETI, Z .

PHYSICS LETTERS B, 1994, 332 (3-4) :373-380

[20] PHENOMENOLOGY OF MODELS WITH MORE THAN 2 HIGGS DOUBLETS [J].

GROSSMAN, Y .

NUCLEAR PHYSICS B, 1994, 426 (02) :355-384

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