@article{fee24a408fd943d289361764551e8dc5,
title = "Investigation of CP violation in B0 → J/ψKS0 decays at LEP",
abstract = "An investigation of CP violation was performed using a total of 24 candidates for B0 → J/ψK0S decay, with a purity of about 60%. These events were selected from 4.4 million hadronic Z0 decays recorded by the OPAL detector at LEP. An analysis procedure, involving techniques to reconstruct the proper decay times and tag the produced b-flavours, B0 or {\=B}0, has been developed to allow a first direct study of the time dependent CP asymmetry that, in the Standard Model, is sin 2β. The result is sin 2β = 3.2+1.8 -2.0 ± 0.5 where the first error is statistical and the second systematic. This result is used to determine probabilities for different values of sin 2β in the physical region from -1 to +1.",
author = "{The OPAL Collaboration} and K. Ackerstaff and G. Alexander and J. Allison and N. Altekamp and Anderson, {K. J.} and S. Anderson and S. Arcelli and S. Asai and Ashby, {S. F.} and D. Axen and G. Azuelos and Ball, {A. H.} and E. Barberio and Barlow, {R. J.} and R. Bartoldus and Batley, {J. R.} and S. Baumann and J. Bechtluft and T. Behnke and Bell, {K. W.} and G. Bella and S. Bentvelsen and S. Bethke and S. Betts and O. Biebel and A. Biguzzi and Bird, {S. D.} and V. Blobel and Bloodworth, {I. J.} and M. Bobinski and P. Bock and D. Bonacorsi and M. Boutemeur and S. Braibant and L. Brigliadori and Brown, {R. M.} and Burckhart, {H. J.} and C. Burgard and R. B{\"u}rgin and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and Charlton, {D. G.} and D. Chrisman and Clarke, {P. E.L.} and I. Cohen and Conboy, {J. E.} and R. Folman",
note = "Funding Information: We thank Elisabet Lundstr{\"o}m at the Department of Surgical and Perioperative Sciences, Ume{\aa} University, who carried out the ultrasound measurements, and Kristina Eriksson, Ume{\aa} University, for analysis of bone markers. We also thank Gun-Britt Johansson, Ann-Cathrin Kallin, Sonja Odeblom and Viktoria von Zweigbergk, research nurses at the Department for Rheumatology, Ume{\aa} University Hospital, and Lena Uddst{\aa}hl, research nurse at Clinical Research Center, Ume{\aa} University Hospital, for excellent help with collection of patient data. We would also like to thank Fredrik Jonsson, BSc, Department of Medicine, Ume{\aa} University Hospital, for valuable statistical discussions.",
year = "1998",
month = jan,
day = "1",
doi = "10.1007/s100529800949",
language = "English",
volume = "5",
pages = "379--388",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer New York",
number = "3",
}