Measurement of D-s(-)->tau(-)(nu)over-bar(tau) and a new limit for B-->tau(-)(nu)over-bar(tau center dot)

被引：71

作者：

Acciarri, M

Adriani, O

AguilarBenitez, M

Ahlen, S

Alpat, B

Alcaraz, J

Alemanni, G

Allaby, J

Aloisio, A

Alverson, G

Alviggi, MG

Ambrosi, G

Anderhub, H

Andreev, VP

Angelescu, T

Anselmo, F

Antreasyan, D

Arefiev, A

Azemoon, T

Aziz, T

Bagnaia, P

Baksay, L

Ball, RC

Banerjee, S

Banicz, K

Barillere, R

Barone, L

Bartalini, P

Baschirotto, A

Basile, M

Battiston, R

Bay, A

Becattini, F

Becker, U

Behner, F

Berdugo, J

Berges, P

Bertucci, B

Betev, VL

Bhattacharya, S

Biasini, M

Biland, A

Bilei, GM

Blaising, JJ

Blyth, SC

Bobbink, GJ

Bock, R

Bohm, A

Borgia, B

Boucham, A

机构：

[1] RHEIN WESTFAL TH AACHEN, INST PHYS 1, D-52056 AACHEN, GERMANY

[2] RHEIN WESTFAL TH AACHEN, INST PHYS 2, D-52056 AACHEN, GERMANY

[3] UNIV AMSTERDAM, NL-1009 DB AMSTERDAM, NETHERLANDS

[4] NIKHEF H, NATL INST HIGH ENERGY PHYS, NL-1009 DB AMSTERDAM, NETHERLANDS

[5] UNIV MICHIGAN, ANN ARBOR, MI 48109 USA

[6] LAB ANNECY LE VIEUX PHYS PARTICULES, IN2P3, CNRS, F-74941 ANNECY LE VIEUX, FRANCE

[7] JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA

[8] UNIV BASEL, INST PHYS, CH-4056 BASEL, SWITZERLAND

[9] INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA

[10] HUMBOLDT UNIV BERLIN, D-10099 BERLIN, GERMANY

[11] IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY

[12] TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA

[13] BOSTON UNIV, BOSTON, MA 02215 USA

[14] NORTHEASTERN UNIV, BOSTON, MA 02115 USA

[15] UNIV BUCHAREST, R-76900 BUCHAREST, ROMANIA

[16] INST ATOM PHYS, R-76900 BUCHAREST, ROMANIA

[17] HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY

[18] HARVARD UNIV, CAMBRIDGE, MA 02139 USA

[19] MIT, CAMBRIDGE, MA 02139 USA

[20] UNIV FLORENCE, I-50125 FLORENCE, ITALY

[21] IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY

[22] CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND

[23] WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND

[24] UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND

[25] UNIV SCI & TECHNOL CHINA, USTC, HEFEI 230029, ANHUI, PEOPLES R CHINA

[26] SEFT, RES INST HIGH ENERGY PHYS, SF-00014 HELSINKI, FINLAND

[27] UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND

[28] UNIV LECCE, I-73100 LECCE, ITALY

[29] IST NAZL FIS NUCL, I-73100 LECCE, ITALY

[30] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA

[31] UNIV LYON 1, CNRS, IN2P3, INST PHYS NUCL, F-69622 VILLEURBANNE, FRANCE

[32] CIEMAT, E-28040 MADRID, SPAIN

[33] IST NAZL FIS NUCL, I-20133 MILAN, ITALY

[34] ITEP, MOSCOW, RUSSIA

[35] UNIV NAPLES, I-80125 NAPLES, ITALY

[36] IST NAZL FIS NUCL, I-80125 NAPLES, ITALY

[37] UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS

[38] CATHOLIC UNIV NIJMEGEN, NL-6525 ED NIJMEGEN, NETHERLANDS

[39] NATL INST NUCL PHYS & HIGH ENERGY PHYS, NL-6525 ED NIJMEGEN, NETHERLANDS

[40] OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA

[41] CALTECH, PASADENA, CA 91125 USA

[42] IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY

[43] UNIV PERUGIA, I-06100 PERUGIA, ITALY

[44] CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA

[45] PRINCETON UNIV, PRINCETON, NJ 08544 USA

[46] IST NAZL FIS NUCL, I-00185 ROME, ITALY

[47] UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY

[48] INST PHYS NUCL, ST PETERSBURG, RUSSIA

[49] UNIV SALERNO, I-84100 SALERNO, ITALY

[50] IST NAZL FIS NUCL, I-84100 SALERNO, ITALY

来源：

PHYSICS LETTERS B | 1997年 / 396卷 / 1-4期

关键词：

D O I：

10.1016/S0370-2693(97)00138-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a data sample of 1475000 Z --> q (q) over bar(gamma) events collected during 1993 with the L3 detector at LEP, we have studied the purely leptonic decays of heavy flavour mesons, D-s(-) --> tau(-)(v) over bar(tau) and B- --> tau(-)(v) over bar(tau). A signal is observed in the invariant mass distribution M(gamma D-s(-)) corresponding to the decay sequence D-s(*-) --> gamma D-s(-), D-s(-) --> tau(-)(v) over bar(tau), tau(-)(v) over bar(tau), tau(-) --> l(-)(v) over bar(l)v(tau). The branching fraction for D-s(-) tau(-) (v) over bar(tau) decays is measured to be B(D-s(-) --> tau(-)(v) over bar(tau)) = 0.074 +/- 0.028(stat) +/- 0.016(syst) +/- 0.018(norm). No signal of B- --> tau-(v) over bar(tau) decays is observed in the data, corresponding to an upper limit on the branching fraction B(B- --> tau(-)(v) over bar(tau)) < 5.7 x 10(-4) at 90% CL. (C) 1997 Elsevier Science B.V.

引用

页码：327 / 337

页数：11

共 33 条

[1] SOFT PHOTON PRODUCTION IN 450-GEV/C P-BE COLLISIONS [J].

ANTOS, J ;

BEKER, H ;

BRONS, S ;

BUSSMANN, K ;

DAGAN, S ;

DREES, A ;

ERD, C ;

ESTEN, MJ ;

FABJAN, CW ;

GLASSEL, P ;

GOERLACH, U ;

HEDBERG, V ;

LISSAUER, D ;

MAZZONI, MA ;

MCCUBBIN, NA ;

NEUBERT, M ;

NEVSKI, P ;

OLSEN, L ;

PFEIFFER, A ;

RAY, A ;

SCHUKRAFT, J ;

SHAPIRA, D ;

SOLTANI, J ;

SPECHT, HJ ;

STUMER, I ;

THOMPSON, J ;

VEENHOF, RJ ;

WILLIS, WJ ;

WOODY, C .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1993, 59 (04) :547-553

[2] THE L3 SILICON MICROVERTEX DETECTOR [J].

ACCIARRI, M ;

ADAM, A ;

ADRIANI, O ;

AHLEN, S ;

ALCARAZ, J ;

AMBROSI, G ;

BABUCCI, E ;

BAKSAY, L ;

BASCHIROTTO, A ;

BATTISTON, R ;

BAUR, W ;

BAY, A ;

BENCZE, GL ;

BERTUCCI, B ;

BIASINI, M ;

BILEI, GM ;

BOBBINK, GJ ;

BOISSEVAIN, JG ;

BOSETTI, M ;

BROOKS, ML ;

BURGER, WJ ;

BUSENITZ, J ;

CAMPS, C ;

CARIA, M ;

CASTELLINI, G ;

CASTELLO, R ;

CHECCUCCL, B ;

CHEN, A ;

COAN, TE ;

COMMICHAU, V ;

DIBITONTO, D ;

DING, J ;

DUINKER, P ;

DJAMBAZOV, L ;

EASO, S ;

EXTERMANN, P ;

FIANDRINI, E ;

GABBANINI, A ;

GOLDSTEIN, J ;

GOUGAS, A ;

HANGARTER, K ;

HAUVILLER, C ;

HERVE, A ;

HOFER, M ;

HOFER, T ;

HOU, S ;

JOSA, MI ;

KAPUSTINSKY, JS ;

KIM, D ;

KINNISON, WW .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 351 (2-3) :300-312

[3] ONE-PRONG TAU-DECAYS WITH NEUTRAL KAONS [J].

ACCIARRI, M ;

ADAM, A ;

ADRIANI, O ;

AGUILARBENITEZ, M ;

AHLEN, S ;

ALPAT, B ;

ALCARAZ, J ;

ALLABY, J ;

ALOISIO, A ;

ALVERSON, G ;

ALVIGGI, MG ;

AMBROSI, G ;

AN, Q ;

ANDERHUB, H ;

ANDREEV, VP ;

ANGELESCU, T ;

ANTREASYAN, D ;

AREFIEV, A ;

AZEMOON, T ;

AZIZ, T ;

BABA, PVKS ;

BAGNAIA, P ;

BAKSAY, L ;

BALL, RC ;

BANERJEE, S ;

BANICZ, K ;

BARILLERE, R ;

BARONE, L ;

BARTALINI, P ;

BASCHIROTTO, A ;

BASILE, M ;

BATTISTON, R ;

BAY, A ;

BECATTINI, F ;

BECKER, U ;

BEHNER, F ;

BENCZE, GL ;

BERDUGO, J ;

BERGES, P ;

BERTUCCI, B ;

BETEV, BL ;

BIASINI, M ;

BILAND, A ;

BILEI, GM ;

BIZZARRI, R ;

BLAISING, JJ ;

BOBBINK, GJ ;

BOCK, R ;

BOHM, A ;

BORGIA, B .

PHYSICS LETTERS B, 1995, 352 (3-4) :487-497

[4] A MEASUREMENT OF tau-POLARIZATION AT LEP [J].

ACCIARRI, M ;

ADAMS, A ;

ADRIANI, O ;

AGUILARBENITEZ, M ;

AHLEN, S ;

ALCARAZ, J ;

ALOISIO, A ;

ALVERSON, G ;

ALVIGGI, MG ;

AMBROSI, G ;

AN, Q ;

ANDERHUB, H ;

ANDERSON, AL ;

ANDREEV, VP ;

ANGELESCU, T ;

ANTONOV, L ;

ANTREASYAN, D ;

ALKHAZOV, G ;

ARCE, P ;

AREFIEV, A ;

AZEMOON, T ;

AZIZ, T ;

BABA, PVKS ;

BAGNAIA, P ;

BAKKEN, JA ;

BAKSAY, L ;

BALL, RC ;

BANERJEE, S ;

BANICZ, K ;

BARILLERE, R ;

BARONE, L ;

BASCHIROTTO, A ;

BASILE, M ;

BATTISTON, R ;

BAY, A ;

BECATTINI, F ;

BECKER, U ;

BEHNER, F ;

BENCZE, GL ;

BERDUGO, J ;

BERGES, P ;

BERTUCCI, B ;

BETEV, BL ;

BIASINI, M ;

BILAND, A ;

BILEI, GM ;

BIZZARRI, R ;

BLAISING, JJ ;

BOBBINK, GJ ;

BOCK, R .

PHYSICS LETTERS B, 1994, 341 (02) :245-256

[5] 1ST MEASUREMENT OF GAMMA(D(S)(+)-]MU+NU)/GAMMA(D(S)(+)-]PHI-PI+) [J].

ACOSTA, D ;

ATHANAS, M ;

MASEK, G ;

PAAR, H ;

BEAN, A ;

GRONBERG, J ;

KUTSCHKE, R ;

MENARY, S ;

MORRISON, RJ ;

NAKANISHI, S ;

NELSON, HN ;

NELSON, TK ;

RICHMAN, JD ;

RYD, A ;

TAJIMA, H ;

SCHMIDT, D ;

SPERKA, D ;

WITHERELL, MS ;

PROCARIO, M ;

YANG, S ;

BALEST, R ;

CHO, K ;

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 ;

JONES, CD ;

JONES, SL ;

KANDASWAMY, J ;

KATAYAMA, N .

PHYSICAL REVIEW D, 1994, 49 (11) :5690-5700

[6] THE CONSTRUCTION OF THE L3 EXPERIMENT [J].

ADEVA, B ;

AGUILARBENITEZ, M ;

AKBARI, H ;

ALCARAZ, J ;

ALOISIO, A ;

ALVAREZTAVIEL, J ;

ALVERSON, G ;

ALVIGGI, MG ;

ANDERHUB, H ;

ANDERSON, AL ;

ANGELOV, AM ;

ANGELOV, TH ;

ANTCHEV, GH ;

ANTONOV, L ;

ANTREASYAN, D ;

AREFIEV, A ;

ATANASOV, IH ;

AUROY, B ;

AYAD, R ;

AYRANOV, OL ;

AZEMOON, T ;

AZIZ, T ;

BACHMANN, U ;

BAHLER, P ;

BAKKEN, JA ;

BAKSAY, L ;

BALDINGER, H ;

BALL, RC ;

BALLANSAT, J ;

BANERJEE, S ;

BAO, J ;

BARBIER, G ;

BARONE, L ;

BASTI, G ;

BAY, A ;

BEAUVAIS, F ;

BECKER, U ;

BEISSEL, R ;

BENDIG, S ;

BENE, P ;

BERDUGO, J ;

BERGES, P ;

BERTHET, M ;

BERTSCH, Y ;

BETEV, BL ;

BILAND, A ;

BISCHOFF, A ;

BISCHOPS, M ;

BIZZARRI, R ;

BLAISING, JJ .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1990, 289 (1-2) :35-102

[7] HADRON CALORIMETRY IN THE L3 DETECTOR [J].

ADRIANI, O ;

AREFIEV, A ;

AN, Q ;

AZEMOON, T ;

AZIZ, T ;

BALL, RC ;

BANERJEE, S ;

BLOMEKE, P ;

CAPELL, M ;

CAI, X ;

CHEN, C ;

CHEN, GM ;

CHEN, HS ;

CHEN, ML ;

CHENDVANKAR, SR ;

CIVININI, C ;

CUI, X ;

DALESSANDRO, R ;

GALAKTIONOV, Y ;

GALLO, E ;

GANGULI, SN ;

GOLDFARB, S ;

GONG, ZF ;

GORDEEV, A ;

GORODKOV, Y ;

GURTU, A ;

HAAN, H ;

HOFER, H ;

ILYAS, MM ;

JONES, LW ;

KARPINSKI, W ;

KAMYSHKOV, Y ;

KHAN, R ;

KLIMENTOV, A ;

KORNADT, O ;

KOUTSENKO, V ;

KUMAR, V ;

KUNIN, A ;

LECOMTE, P ;

LECOULTRE, P ;

LETTRY, J ;

LI, HT ;

LI, XG ;

LIN, YB ;

LU, YS ;

LUBELSMEYER, K ;

MALININ, A ;

MALHOTRA, PK ;

MARCHIONNI, A ;

MAZUMDAR, K .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1991, 302 (01) :53-62

[8]

AKERS R, 1995, Z PHYS C PART FIELDS, V67, P27

[9] SQUARK PRODUCTION AT THE FERMILAB TEVATRON [J].

BEENAKKER, W ;

HOPKER, R ;

SPIRA, M ;

ZERWAS, PM .

PHYSICAL REVIEW LETTERS, 1995, 74 (15) :2905-2908

[10]

ALBRECHT H, 1992, Z PHYS C PART FIELDS, V53, P361, DOI 10.1007/BF01625894

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