PubMed · 16907434
Direct limits on the oscillation frequency.
Abstract
We report results of a study of the B(s)(0) oscillation frequency using a large sample of B(s)(0) semileptonic decays corresponding to approximately 1 fb(-1) of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider in 2002-2006. The amplitude method gives a lower limit on the B(s)(0) oscillation frequency at 14.8 ps(-1) at the 95% C.L. At delta m(s) = 19 ps(-1), the amplitude deviates from the hypothesis A= 0(1) by 2.5 (1.6) standard deviations, corresponding to a two-sided C.L. of 1% (10%). A likelihood scan over the oscillation frequency, delta m(s), gives a most probable value of 19 ps(-1) and a range of 17 < delta m(s) < 21 ps(-1)at the 90% C.L., assuming Gaussian uncertainties. This is the first direct two-sided bound measured by a single experiment. If delta m(s) lies above 22 ps(-1), then the probability that it would produce a likelihood minimum similar to the one observed in the interval 16-22 ps(-1) is (5.0 +/- 0.3)%.
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V M Abazov, B Abbott, M Abolins, B S Acharya, M Adams, T Adams, M Agelou, J-L Agram, S H Ahn, M Ahsan, G D Alexeev, G Alkhazov, A Alton, G Alverson, G A Alves, M Anastasoaie, T Andeen, S Anderson, B Andrieu, M S Anzelc, Y Arnoud, M Arov, A Askew, B Asman, A C S Assis Jesus, O Atramentov, C Autermann, C Avila, C Ay, F Badaud, A Baden, L Bagby, B Baldin, D V Bandurin, P Banerjee, S Banerjee, E Barberis, P Bargassa, P Baringer, C Barnes, J Barreto, J F Bartlett, U Bassler, D Bauer, A Bean, M Begalli, M Begel, C Belanger-Champagne, A Bellavance, J A Benitez, S B Beri, G Bernardi, R Bernhard, L Berntzon, I Bertram, M Besançon, R Beuselinck, V A Bezzubov, P C Bhat, V Bhatnagar, M Binder, C Biscarat, K M Black, I Blackler, G Blazey, F Blekman, S Blessing, D Bloch, K Bloom, U Blumenschein, A Boehnlein, O Boeriu, T A Bolton, F Borcherding, G Borissov, K Bos, T Bose, A Brandt, R Brock, G Brooijmans, A Bross, D Brown, N J Buchanan, D Buchholz, M Buehler, V Buescher, S Burdin, S Burke, T H Burnett, E Busato, C P Buszello, J M Butler, S Calvet, J Cammin, S Caron, W Carvalho, B C K Casey, N M Cason, H Castilla-Valdez, S Chakrabarti. 2006-07-14. Direct limits on the oscillation frequency.. https://doi.org/10.1103/physrevlett.97.021802
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