SEARCH FOR NEUTRAL CHARMLESS B-DECAYS AT LEP

被引：23

作者：

ACCIARRI, M

ADAM, A

ADRIANI, O

AGUILARBENITEZ, M

AHLEN, S

ALPAT, B

ALCARAZ, J

ALLABY, J

ALOISIO, A

ALVERSON, G

ALVIGGI, MG

AMBROSI, G

ANDERHUB, H

ANDREEV, VP

ANGELESCU, T

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

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

BOUCHAM, A

BOURILKOV, D

机构：

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

[2] NIKHEF, NATL INST HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS

[3] UNIV AMSTERDAM, 1009 DB AMSTERDAM, NETHERLANDS

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

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

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

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

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

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

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

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

[12] BOSTON UNIV, BOSTON, MA 02215 USA

[13] NORTHWESTERN UNIV, BOSTON, MA 02115 USA

[14] INST ATOM PHYS, BUCHAREST, ROMANIA

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

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

[17] HARVARD UNIV, CAMBRIDGE, MA 02139 USA

[18] MIT, CAMBRIDGE, MA 02139 USA

[19] IST NAZL FIS NUCL, SEZIONE FIRENZE, I-50125 FLORENCE, ITALY

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

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

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

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

[24] UNIV SCI & TECHNOL CHINA, HEFEI 230029, PEOPLES R CHINA

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

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

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

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

[29] CTR INVEST ENERGET MEDIOAMBIENTALES & TECNOL, E-28040 MADRID, SPAIN

[30] INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA

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

[32] IST NAZL FIS NUCL, SEZIONE NAPOLI, I-80125 NAPLES, ITALY

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

[34] UNIV NYMEGEN, 6525 ED NIJMEGEN, NETHERLANDS

[35] NATL INST NUCL PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS

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

[37] CALTECH, PASADENA, CA 91125 USA

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

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

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

[41] PRINCETON UNIV, PRINCETON, NJ 08544 USA

[42] IST NAZL FIS NUCL, SEZIONE ROMA, I-00185 ROME, ITALY

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

[44] INST PHYS NUCL, ST PETERSBURG, RUSSIA

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

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

[47] UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92093 USA

[48] UNIV SANTIAGO, DEPT FIS PARTICULAS ELEMENTALES, E-15706 SANTIAGO, SPAIN

[49] BULGARIAN ACAD SCI, CENT LAB MECHATRON & INTRUMENTAT, BU-1113 SOFIA, BULGARIA

[50] KOREA ADV INST SCI & TECHNOL, CTR HIGH ENERGY PHYS, TAEJON 305701, SOUTH KOREA

来源：

PHYSICS LETTERS B | 1995年 / 363卷 / 1-2期

基金：

匈牙利科学研究基金会;

关键词：

D O I：

10.1016/0370-2693(95)01042-O

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for rare charmless decays of B-d(0) and B-s(0) mesons has been performed in the exclusive channels B-d(s)(0)-->eta eta, B-d(s)(0)-->eta pi(0) and B-d(s)(0)-->pi(0) pi(0). The data sample consisted of three million hadronic Z decays collected by the L3 experiment at LEP from 1991 through 1994. No candidate event has been observed and the following upper limits at 90% confidence level on the branching ratios have been set: Br(B-d(0)--eta eta) < 4.1 x 10(-4), Br(B-s(0)-->eta eta) < 1.5 x 10(-3), Br(B-d(0)-->eta pi(0)) < 2.5 x 10(-4), Br(B-s(0)-->eta pi(0)) < 1.0 x 10(-3), Br(B-d(0)-->pi(0) pi(0)) < 6.0 x 10(-5), Br(B-s(0)-->pi(0) pi(0)) < 2.1 x 10(-4). These are the first experimental limits on B-d(0)-->eta eta and on the B-s(0) neutral charmless modes.

引用

页码：127 / 136

页数：10

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