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

被引：122

作者：

FALK, AF

LIGETI, Z

NEUBERT, M

NIR, Y

机构：

[1] JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218

[2] WEIZMANN INST SCI,DEPT PARTICLE PHYS,IL-76100 REHOVOT,ISRAEL

[3] CERN,DIV THEORY,CH-1211 GENEVA 23,SWITZERLAND

来源：

PHYSICS LETTERS B | 1994年 / 326卷 / 1-2期

基金：

美国能源部;

关键词：

D O I：

10.1016/0370-2693(94)91206-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the differential decay rate for inclusive B --> taunuXBAR transitions to order 1/m(b)2 in the heavy quark expansion, for both polarized and unpolarized tau leptons. We show that using a systematic 1/m(b) expansion significantly reduces the theoretical uncertainties in the calculation. We obtain for the total branching ratio BR(BBAR --> taunuXBAR) = 2.30 +/- 0.25%, and for the tau polarization A(pol) = -0.706 +/- 0.006. From the experimental measurement of the branching ratio at LEP, we derive the upper bound lambda1 less-than-or-equal-to 0.8 GeV2 for one of the parameters of the heavy quark effective theory.

引用

页码：145 / 153

页数：9

共 35 条

[1] A MEASUREMENT OF THE TAU MASS [J].

ALBRECHT, H ;

EHRLICHMANN, H ;

HAMACHER, T ;

HOFMANN, RP ;

KIRCHHOFF, T ;

NAU, A ;

NOWAK, S ;

SCHRODER, H ;

SCHULZ, HD ;

WALTER, M ;

WURTH, R ;

APPUHN, RD ;

HAST, C ;

KOLANOSKI, H ;

LANGE, A ;

LINDNER, A ;

MANKEL, R ;

SCHIEBER, M ;

SIEGMUND, T ;

SPAAN, B ;

THURN, H ;

TOPFER, D ;

WALTHER, A ;

WEGENER, D ;

PAULINI, M ;

REIM, K ;

WEGENER, H ;

MUNDT, R ;

OEST, T ;

REINER, R ;

SCHMIDTPARZEFALL, W ;

FUNK, W ;

STIEWE, J ;

WERNER, S ;

EHRET, K ;

HOFMANN, W ;

HUPPER, A ;

KHAN, S ;

KNOPFLE, KT ;

SPENGLER, J ;

BRITTON, DI ;

CHARLESWORTH, CEK ;

EDWARDS, KW ;

HYATT, ERF ;

KAPITZA, H ;

KRIEGER, P ;

MACFARLANE, DB ;

PATEL, PM ;

PRENTICE, JD ;

SAULL, PRB .

PHYSICS LETTERS B, 1992, 292 (1-2) :221-228

[2] QCD SUM-RULES IN THE EFFECTIVE HEAVY QUARK THEORY [J].

BAGAN, E ;

BALL, P ;

BRAUN, VM ;

DOSCH, HG .

PHYSICS LETTERS B, 1992, 278 (04) :457-464

[3] MEASUREMENT OF THE MASS OF THE TAU-LEPTON [J].

BAI, JZ ;

BARDON, O ;

BECKERSZENDY, RA ;

BURNETT, TH ;

CAMPBELL, JS ;

CHEN, SJ ;

CHEN, SM ;

CHEN, YQ ;

CHENG, ZD ;

COLLER, JA ;

COWAN, RF ;

CUI, HC ;

CUI, XZ ;

DING, HL ;

DU, ZZ ;

DUNWOODIE, W ;

FANG, C ;

FERO, MJ ;

GAO, ML ;

GAO, SQ ;

GAO, WX ;

GAO, YN ;

GU, JH ;

GU, SD ;

GU, WX ;

GUO, YN ;

GUO, YY ;

HAN, Y ;

HATANAKA, M ;

HE, J ;

HITLIN, DG ;

HU, GY ;

HU, T ;

HUANG, DQ ;

HUANG, YZ ;

IZEN, JM ;

JIA, QP ;

JIANG, CH ;

JIANG, ZJ ;

JOHNSON, AS ;

JONES, LA ;

KELSEY, MH ;

LAI, YF ;

LANG, PF ;

LANKFORD, A ;

LI, F ;

LI, J ;

LI, PQ ;

LI, QM ;

LI, RB .

PHYSICAL REVIEW LETTERS, 1992, 69 (21) :3021-3024

[4] MEASUREMENT OF THE TAU-LEPTON MASS [J].

BALEST, R ;

DAOUDI, M ;

FORD, WT ;

JOHNSON, DR ;

LINGEL, K ;

LOHNER, M ;

RANKIN, P ;

SMITH, JG ;

ALEXANDER, JP ;

BEBEK, C ;

BERKELMAN, K ;

BESSON, D ;

BROWDER, TE ;

CASSEL, DG ;

CHO, HA ;

COFFMAN, DM ;

DRELL, PS ;

EHRLICH, R ;

GALIK, RS ;

GARCIASCIVERES, M ;

GEISER, B ;

GITTELMAN, B ;

GRAY, SW ;

HARTILL, DL ;

HELTSLEY, BK ;

HONSCHEID, K ;

JONES, CD ;

KANDASWAMY, J ;

KATAYAMA, N ;

KIM, PC ;

KREINICK, DL ;

LUDWIG, GS ;

MASUI, J ;

MEVISSEN, J ;

MISTRY, NB ;

NG, CR ;

NORDBERG, E ;

OGG, M ;

OGRADY, C ;

PATTERSON, JR ;

PETERSON, D ;

RILEY, D ;

SAPPER, M ;

SELEN, M ;

WORDEN, H ;

WORRIS, M ;

WURTHWEIN, F ;

AVERY, P ;

FREYBERGER, A ;

RODRIGUEZ, J .

PHYSICAL REVIEW D, 1993, 47 (09) :R3671-R3675

[5]

BALK S, 1993, MZTH9332

[6]

BALL P, 1993, TUMT31293

[7] QCD PREDICTIONS FOR LEPTON SPECTRA IN INCLUSIVE HEAVY FLAVOR DECAYS [J].

BIGI, II ;

SHIFMAN, M ;

URALTSEV, NG ;

VAINSHTEIN, A .

PHYSICAL REVIEW LETTERS, 1993, 71 (04) :496-499

[8] NONPERTURBATIVE CORRECTIONS TO INCLUSIVE BEAUTY AND CHARM DECAYS - QCD VERSUS PHENOMENOLOGICAL MODELS [J].

BIGI, II ;

URALTSEV, NG ;

VAINSHTEIN, AI .

PHYSICS LETTERS B, 1992, 293 (3-4) :430-436

[9]

BIGI II, 1993, TPIMINN9360T

[10]

BLOK B, 1993, NSFITP93068

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