MEASUREMENT OF B0-BBAR0 MIXING AT THE CERN SPPBARS COLLIDER

被引：26

作者：

ALBAJAR, C ^{[1
]}

Albrow, MG

Allkofer, OC

Ankoviak, K

Apsimon, R

Aubert, B

Bacci, C

Bartha, S

Bauer, G

Bettini, A

Bezaguet, A

Biddulph, P

Bohn, H

Bohrer, A

Bonino, R

Bos, K

Botlo, M

Brockhausen, D

Buchanan, C

Buschbeck, B

Busetto, G

Caner, A

Casoli, P

Castilla-Valdez, H

Cavanna, F

Cennini, P

Centro, S

Ceradini, F

Ciapetti, G

Cittolin, S

Clayton, E

Cline, D

Colas, J

Conte, R

Coughlan, JA

Dau, D

Daum, C

Della Negra, M

Demoulin, M

Denegri, D

Dibon, H

DiCiaccio, A

Hedo, FJD

Dobrzynski, L

Dorenbosch, J

Dowell, JD

Drijard, D

Eggert, K

Eisenhandler, E

Ellis, N

机构：

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

[2] NIKHEF, Amsterdam, NETHERLANDS

[3] LAPP, Annecy, FRANCE

[4] Imperial Coll, London, ENGLAND

[5] Univ London Queen Mary & Westfield Coll, London E1 4NS, ENGLAND

[6] CIEMAT, Madrid, SPAIN

[7] MIT, Cambridge, MA 02139 USA

[8] Coll France, Paris, FRANCE

[9] Rutherford Appleton Lab, Didcot, Oxon, ENGLAND

[10] CEN, Saclay, FRANCE

[11] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

来源：

PHYSICS LETTERS B | 1991年 / 262卷 / 01期

关键词：

D O I：

10.1016/0370-2693(91)90661-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on a new measurement of B0-BBAR0 mixing at the CERN SppBARS Collider. Mixing is measured in the non-isolated high mass dimuon sample using data from the 1988-1989 collider runs. The measured value of the mixing parameter, chi, is 0.145 +/- 0.035(stat.) +/- 0.014(syst.). The average of this measurement and that from our 1984-1985 data is chi = 0.148 +/- 0.029(stat.) +/- 0.017(syst.) assuming fully correlated systematic errors. Using the measurement of chi-d from ARGUS and CLEO, we obtain chi-s = 0.50 +/- 0.20, which gives a limit of chi-s > 0.17 (0.12) at 90% (95%) CL. Including the measurements of chi from the ALEPH and L3 experiments gives chi-s = 0.53 +/- 0.15, and a limit of chi-s > 0.27 (0.23) at 90% (95%) CL.

引用

页码：171 / 178

页数：8

共 19 条

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