Measurement of the Lambda(b)(0) lifetime using Lambda(b)(0)->Lambda(c)(+)l(-)(nu)over-bar

被引：32
|
作者：
Abe, F
Akimoto, H
Akopian, A
Albrow, MG
Amendolia, SR
Amidei, D
Antos, J
AnwayWiese, C
Aota, S
Apollinari, G
Asakawa, T
Ashmanskas, W
Atac, M
Azfar, F
AzziBacchetta, P
Bacchetta, N
Badgett, W
Bagdasarov, S
Bailey, MW
Bao, J
deBarbaro, P
BarbaroGaltieri, A
Barnes, VE
Barnett, BA
Barzi, E
Bauer, G
Baumann, T
Bedeschi, F
Behrends, S
Belforte, S
Bellettini, G
Bellinger, J
Benjamin, D
Benlloch, J
Bensinger, J
Benton, D
Beretvas, A
Berge, JP
Berryhill, J
Bertolucci, S
Bhatti, A
Biery, K
Binkley, M
Bisello, D
Blair, RE
Blocker, C
Bodek, A
Bokhari, W
Bolognesi, V
Bortoletto, D
机构：
[1] ARGONNE NATL LAB,ARGONNE,IL 60439
[2] UNIV BOLOGNA,IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY
[3] BRANDEIS UNIV,WALTHAM,MA 02254
[4] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024
[5] UNIV CHICAGO,CHICAGO,IL 60637
[6] DUKE UNIV,DURHAM,NC 27708
[7] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510
[8] IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY
[9] HARVARD UNIV,CAMBRIDGE,MA 02138
[10] HIROSHIMA UNIV,HIGASHIHIROSHIMA 724,JAPAN
[11] UNIV ILLINOIS,URBANA,IL 61801
[12] MCGILL UNIV,INST PARTICLE PHYS,MONTREAL,PQ,CANADA
[13] UNIV TORONTO,TORONTO,ON M5S 1A7,CANADA
[14] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218
[15] LAWRENCE BERKELEY LAB,BERKELEY,CA 94720
[16] MIT,CAMBRIDGE,MA 02139
[17] UNIV MICHIGAN,ANN ARBOR,MI 48109
[18] MICHIGAN STATE UNIV,E LANSING,MI 48824
[19] UNIV NEW MEXICO,ALBUQUERQUE,NM 87131
[20] OSAKA CITY UNIV,OSAKA 588,JAPAN
[21] UNIV PADUA,IST NAZL FIS NUCL,SEZ PADOVA,I-35131 PADUA,ITALY
[22] UNIV PENN,PHILADELPHIA,PA 19104
[23] UNIV PISA,IST NAZL FIS NUCL,I-56100 PISA,ITALY
[24] SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY
[25] UNIV PITTSBURGH,PITTSBURGH,PA 15260
[26] PURDUE UNIV,W LAFAYETTE,IN 47907
[27] UNIV ROCHESTER,ROCHESTER,NY 14627
[28] ROCKEFELLER UNIV,NEW YORK,NY 10021
[29] RUTGERS STATE UNIV,PISCATAWAY,NJ 08854
[30] ACAD SINICA,TAIPEI 11529,TAIWAN
[31] TEXAS A&M UNIV,COLLEGE STN,TX 77843
[32] TEXAS TECH UNIV,LUBBOCK,TX 79409
[33] UNIV TSUKUBA,TSUKUBA,IBARAKI 305,JAPAN
[34] TUFTS UNIV,MEDFORD,MA 02155
[35] UNIV WISCONSIN,MADISON,WI 53706
[36] YALE UNIV,NEW HAVEN,CT 06511
来源：
PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 08期
关键词：
D O I：
10.1103/PhysRevLett.77.1439
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The lifetime of Lambda(b)(0) is measured using the semileptonic decay Lambda(b)(0)-->Lambda(c)(+)l(-)nu(-), where the Lambda(c)(+) is reconstructed through its decay Lambda(c)(+) --> pK(-)pi(+). The data were collected by the CDF detector at the Tevatron Collider during 1992-1995 and correspond to an integrated luminosity of 110 pb(-1) of <p(p)over bar> collisions at root s=1.8 TeV. From a fit to the decay length distribution of the Lambda(c)-lepton system from 197+/-25 signal events, the lifetime of Lambda(b)(0) is measured to be 1.32+/-0.15+/- 0.07 ps.
引用
收藏
页码：1439 / 1443
页数：5
相关论文
共 50 条
  • [1] Measurement of Lambda(0)-(Lambda(0))over-bar mass difference
    Rybicki, K
    ACTA PHYSICA POLONICA B, 1996, 27 (09): : 2155 - 2158
  • [2] A first measurement of the Lambda(Lambda)over-bar and Lambda Lambda ((Lambda)over-bar(Lambda)over-bar) spin compositions in hadronic Z(0) decays
    Alexander, G
    Allison, J
    Altekamp, N
    Ametewee, K
    Anderson, KJ
    Anderson, S
    Arcelli, S
    Asai, S
    Axen, D
    Azuelos, G
    Ball, AH
    Barberio, E
    Barlow, RJ
    Bartoldus, R
    Batley, JR
    Beaudoin, G
    Bechtluft, J
    Beeston, C
    Behnke, T
    Bell, AN
    Bell, KW
    Bella, G
    Bentvelsen, S
    Berlich, P
    Bethke, S
    Biebel, O
    Blobel, V
    Bloodworth, IJ
    Bloomer, JE
    Bock, P
    Bosch, HM
    Boutemeur, M
    Bouwens, BT
    Braibant, S
    Brown, RM
    Burckhart, HJ
    Burgard, C
    Burgin, R
    Capiluppi, P
    Carnegie, RK
    Carter, AA
    Carter, JR
    Chang, CY
    Charlesworth, C
    Charlton, DG
    Chrisman, D
    Chu, SL
    Clarke, PEL
    Cohen, I
    Conboy, JE
    PHYSICS LETTERS B, 1996, 384 (1-4) : 377 - 387
  • [3] B physics on the lattice: (Lambda)over-bar, lambda(1), (m)over-bar(b)((m)over-bar(b)), lambda(2), B-0-(B)over-bar(0) mixing, f(B) and all that
    Gimenez, V
    Martinelli, G
    Sachrajda, CT
    NUCLEAR PHYSICS B, 1997, : 365 - 367
  • [4] Improved QCD form factor constraints and Lambda(b)->Lambda(c)l(nu)over-bar
    Boyd, CG
    Lebed, RF
    NUCLEAR PHYSICS B, 1997, 485 (1-2) : 275 - 290
  • [5] Order 1/m(b)(3) corrections to B->X(c)l(nu)over-bar decay and their implication for the measurement of (Lambda)over-bar and lambda(1)
    Gremm, M
    Kapustin, A
    PHYSICAL REVIEW D, 1997, 55 (11) : 6924 - 6932
  • [6] PRODUCTION OF LAMBDA AND LAMBDA(LAMBDA)OVER-BAR CORRELATIONS IN THE HADRONIC DECAYS OF THE Z(0)
    ABREU, P
    ADAM, W
    ADYE, T
    AGASI, E
    ALEKSAN, R
    ALEKSEEV, GD
    ALGERI, A
    ALLEN, P
    ALMEHED, S
    ALVSVAAG, SJ
    AMALDI, U
    ANDREAZZA, A
    ANTILOGUS, P
    APEL, WD
    APSIMON, RJ
    ARNOUD, Y
    ASMAN, B
    AUGUSTIN, JE
    AUGUSTINUS, A
    BAILLON, P
    BAMBADE, P
    BARAO, F
    BARATE, R
    BARBIELLINI, G
    BARDIN, DY
    BARKER, GJ
    BARONCELLI, A
    BARRING, O
    BARRIO, JA
    BARTL, W
    BATES, MJ
    BATTAGLIA, M
    BAUBILLIER, M
    BECKS, KH
    BEGALLI, M
    BEILLIERE, P
    BELOKOPYTOV, Y
    BELTRAN, P
    BENEDIC, D
    BENVENUTI, AC
    BERGGREN, M
    BERTRAND, D
    BIANCHI, F
    BILENKY, MS
    BILLOIR, P
    BJARNE, J
    BLOCH, D
    BLOCKI, J
    BLYTH, S
    BOCCI, V
    PHYSICS LETTERS B, 1993, 318 (01) : 249 - 262
  • [7] Mass determinations for Lambda(0) and (Lambda)over-bar(0) produced in pp reactions
    Buenrostro, EA
    Quintero, GI
    Felix, J
    REVISTA MEXICANA DE FISICA, 1997, 43 (03) : 482 - 488
  • [8] A MEASUREMENT OF THE LAMBDA(B)(0)
    AKERS, R
    ALEXANDER, G
    ALLISON, J
    ALTEKAMP, N
    AMETEWEE, K
    ANDERSON, KJ
    ANDERSON, S
    ARCELLI, S
    ASAI, S
    AXEN, D
    AZUELOS, G
    BALL, AH
    BARBERIO, E
    BARLOW, RJ
    BARTOLDUS, R
    BATLEY, JR
    BEAUDOIN, G
    BETHKE, S
    BECK, A
    BECK, GA
    BEESTON, C
    BEHNKE, T
    BELL, KW
    BELLA, G
    BENTVELSEN, S
    BERLICH, P
    BECHTLUFT, J
    BIEBEL, O
    BLOODWORTH, IJ
    BOCK, P
    BOSCH, HM
    BOUTEMEUR, M
    BRAIBANT, S
    BRIGHTTHOMAS, P
    BROWN, RM
    BUIJS, A
    BURCKHART, HJ
    BURGIN, R
    BURGARD, C
    CAPILUPPI, P
    CARNEGIE, RK
    CARTER, AA
    CARTER, JR
    CHANG, CY
    CHARLESWORTH, C
    CHARLTON, DG
    CHU, SL
    CLARKE, PEL
    CLAYTON, JC
    CLOWES, SG
    PHYSICS LETTERS B, 1995, 353 (2-3) : 402 - 412
  • [9] Measurement of the average b-baryon lifetime and the product branching ratio f(b->Lambda(b))center dot BR(Lambda(b)->Lambda l(-)nu)over-bar-X)
    Akers, R
    Alexander, G
    Allison, J
    Altekamp, N
    Ametewee, K
    Anderson, KJ
    Anderson, S
    Arcelli, S
    Asai, S
    Axen, D
    Azuelos, G
    Ball, AH
    Barberio, E
    Barlow, RJ
    Bartoldus, R
    Batley, JR
    Beaudoin, G
    Bechtluft, J
    Beck, A
    Beck, GA
    Beeston, C
    Behnke, T
    Bell, KW
    Bella, G
    Bentvelsen, S
    Berlich, P
    Bethke, S
    Biebel, O
    Bloodworth, IJ
    Bock, P
    Bosch, HM
    Boutemeur, M
    Braibant, S
    BrightThomas, P
    Brown, RM
    Buijs, A
    Burckhart, HJ
    Burgard, C
    Bürgin, R
    Capiluppi, P
    Carnegie, RK
    Carter, AA
    Carter, JR
    Chang, CY
    Charlesworth, C
    Charlton, DG
    Chu, SL
    Clarke, PEL
    Clayton, JC
    Clowes, SG
    ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1996, 69 (02): : 195 - 214
  • [10] TAU-POLARIZATION IN LAMBDA(B)-]X(C)TAU(NU)OVER-BAR AND B-]X(C)TAU(NU)OVER-BAR
    GREMM, M
    KOPP, G
    SEHGAL, LM
    PHYSICAL REVIEW D, 1995, 52 (03) : 1588 - 1596
12345