Search for exclusive decays of the Lambda(b) baryon and measurement of its mass

被引：29

作者：

Abreu, P

Adam, W

Adye, T

Agasi, E

Ajinenko, I

Aleksan, R

Alekseev, GD

Alemany, R

Allport, PP

Almehed, S

Amaldi, U

Amato, S

Andreazza, A

Andrieux, ML

Antilogus, P

Apel, WD

Arnoud, Y

Asman, B

Augustin, JE

Augustinus, A

Baillon, A

Bambade, P

Barao, F

Barate, R

Barbi, M

Bardin, DY

Baroncelli, A

Barring, O

Barrio, JA

Bartl, W

Bates, MJ

Battaglia, M

Baubillier, M

Baudot, J

Becks, KH

Begalli, M

Beilliere, P

Belokopytov, Y

Benvenuti, AC

Berggren, M

Bertrand, D

Bianchi, F

Bigi, M

Bilenky, MS

Billoir, P

Bloch, D

Blume, M

Blyth, S

Bolognese, T

Bonesini, M

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011

[2] IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011

[3] UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 WILRIJK,BELGIUM

[4] VUB,ULB,IIHE,B-1050 BRUSSELS,BELGIUM

[5] UNIV ETAT MONS,FAC SCI,B-7000 MONS,BELGIUM

[6] UNIV ATHENS,PHYS LAB,GR-10680 ATHENS,GREECE

[7] UNIV BERGEN,DEPT PHYS,N-5007 BERGEN,NORWAY

[8] UNIV BOLOGNA,DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY

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

[10] CTR BRASILEIRO PESQUISAS FIS,BR-22290 RIO JANEIRO,BRAZIL

[11] PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS,BR-22453 RIO JANEIRO,BRAZIL

[12] UNIV ESTADUAL RIO DE JANEIRO,INST FIS,RIO JANEIRO,BRAZIL

[13] COMENIUS UNIV BRATISLAVA,FAC MATH & PHYS,SK-84215 BRATISLAVA,SLOVAKIA

[14] COLL FRANCE,PHYS CORPUSCULAIRE LAB,IN2P3,CNRS,F-75231 PARIS 05,FRANCE

[15] CERN,CH-1211 GENEVA 23,SWITZERLAND

[16] UNIV STRASBOURG 1,CTR RECH NUCL,CNRS,IN2P3,F-67037 STRASBOURG,FRANCE

[17] NATL CTR SCI RES DEMOKRITOS,INST NUCL PHYS,GR-15310 ATHENS,GREECE

[18] ACAD SCI CZECH REPUBL,INST PHYS,DIV HIGH ENERGY PHYS,FZU,CR-18040 PRAGUE 8,CZECH REPUBLIC

[19] UNIV GENOA,DIPARTIMENTO FIS,I-16146 GENOA,ITALY

[20] IST NAZL FIS NUCL,I-16146 GENOA,ITALY

[21] UNIV GRENOBLE 1,INST SCI NUCL,IN2P3,CNRS,F-38026 ST MARTIN DHERES,FRANCE

[22] RES INST HIGH ENERGY PHYS,FIN-00014 HELSINKI,FINLAND

[23] JOINT INST NUCL RES,MOSCOW 101000,RUSSIA

[24] UNIV KARLSRUHE,INST EXPTL KERNPHYS,D-76128 KARLSRUHE,GERMANY

[25] INST NUCL PHYS,PL-30055 KRAKOW,POLAND

[26] UNIV MIN & MET KRAKOW,PL-30055 KRAKOW,POLAND

[27] UNIV PARIS 11,LAB ACCELERATEUR LINEAIRE,IN2P3,CNRS,F-91405 ORSAY,FRANCE

[28] UNIV LANCASTER,SCH PHYS & MAT,LANCASTER LA1 4YB,ENGLAND

[29] UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND

[30] UNIV PARIS 06,CNRS,IN2P3,LPNHE,F-75252 PARIS 05,FRANCE

[31] UNIV PARIS 07,F-75252 PARIS 05,FRANCE

[32] LUND UNIV,DEPT PHYS,S-22362 LUND,SWEDEN

[33] UNIV LYON 1,CNRS,IPNL,IN2P3,F-69622 VILLEURBANNE,FRANCE

[34] UNIV COMPLUTENSE,E-28040 MADRID,SPAIN

[35] UNIV AIX MARSEILLE 2,CPP,IN2P3,CNRS,F-13288 MARSEILLE,FRANCE

[36] UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY

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

[38] NIELS BOHR INST,DK-2100 COPENHAGEN 0,DENMARK

[39] CHARLES UNIV,NUCL CTR MFF,NC,AREA MFF,CR-18000 PRAGUE 8,CZECH REPUBLIC

[40] NIKHEF H,1009 DB AMSTERDAM,NETHERLANDS

[41] NATL TECH UNIV ATHENS,DEPT PHYS,GR-15773 ATHENS,GREECE

[42] UNIV OSLO,DEPT PHYS,N-1000 OSLO 3,NORWAY

[43] UNIV OVIEDO,DEPT FIS,E-33006 OVIEDO,SPAIN

[44] UNIV OXFORD,DEPT PHYS,OXFORD OX1 3RH,ENGLAND

[45] UNIV PADUA,DIPARTIMENTO FIS,I-35131 PADUA,ITALY

[46] IST NAZL FIS NUCL,I-35131 PADUA,ITALY

[47] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

[48] UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,I-00173 ROME,ITALY

[49] IST NAZL FIS NUCL,I-00173 ROME,ITALY

[50] CTR ETUD SACLAY,DSM,DAPNIA,F-91191 GIF SUR YVETTE,FRANCE

来源：

PHYSICS LETTERS B | 1996年 / 374卷 / 04期

关键词：

D O I：

10.1016/0370-2693(96)00306-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for fully reconstructed Lambda(b)(0) beauty baryons is performed using about 3 million Z decays collected with the DELPHI detector at LEP. The analysis relies on the combined use of the accurate tracking and of the hadron identification capabilities of DELPHI. A total of four events has been found, three in the Lambda(c)(+)pi(-) channel and one in the Lambda(c)(+)a(1)(-) channel over a small background. The Lambda(b)(0) beauty baryon mass is measured to be (5668 +/- 16 (stat.) +/-8 (syst.)) MeV/c(2).

引用

页码：351 / 361

页数：11

共 19 条

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