Measurement of B d mixing using opposite-side flavor tagging

We report on a measurement of the B-d(0) mixing frequency and the calibration of an opposite-side flavor tagger in the D0 experiment. Various properties associated with the b quark on the opposite side of the reconstructed B meson are combined using a likelihood-ratio method into a single variable w...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Physical review. D 2006, Vol.74 (11), p.112002, Article 112002
Hauptverfasser:	Abazov, V. M., Abbott, B., Abolins, M., Acharya, B. S., Adams, M., Adams, T., Agelou, M., Aguilo, E., Ahn, S. H., Ahsan, M., Alexeev, G. D., Alkhazov, G., Alton, A., Alverson, G., Alves, G. A., Anastasoaie, M., Andeen, T., Anderson, S., Andrieu, B., Anzelc, M. S., Arnoud, Y., Arov, M., Askew, A., Åsman, B., Jesus, A. C. S. Assis, Atramentov, O., Autermann, C., Avila, C., Ay, C., Badaud, F., Baden, A., Bagby, L., Baldin, B., Bandurin, D. V., Banerjee, P., Banerjee, S., Barberis, E., Bargassa, P., Baringer, P., Barnes, C., Barreto, J., Bartlett, J. F., Bassler, U., Bauer, D., Beale, S., Bean, A., Begalli, M., Begel, M., Belanger-Champagne, C., Bellantoni, L., Bellavance, A., Benitez, J. A., Beri, S. B., Bernardi, G., Bernhard, R., Berntzon, L., Bertram, I., Besançon, M., Beuselinck, R., Bezzubov, V. A., Bhat, P. C., Bhatnagar, V., Binder, M., Biscarat, C., Black, K. M., Blackler, I., Blazey, G., Blekman, F., Blessing, S., Bloch, D., Bloom, K., Blumenschein, U., Boehnlein, A., Boeriu, O., Bolton, T. A., Borissov, G., Bos, K., Bose, T., Brandt, A., Brock, R., Brooijmans, G., Bross, A., Brown, D., Buchanan, N. J., Buchholz, D., Buehler, M., Buescher, V., Burdin, S., Burke, S., Burnett, T. H., Busato, E., Buszello, C. P., Butler, J. M., Calfayan, P., Calvet, S., Cammin, J., Caron, S., Carvalho, W., Casey, B. C. K., Cason, N. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Fysik High Energy Physics - Experiment NATURAL SCIENCES NATURVETENSKAP Physics
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	We report on a measurement of the B-d(0) mixing frequency and the calibration of an opposite-side flavor tagger in the D0 experiment. Various properties associated with the b quark on the opposite side of the reconstructed B meson are combined using a likelihood-ratio method into a single variable with enhanced tagging power. Its performance is tested with data, using a large sample of reconstructed semileptonic B ->mu(DX)-X-0 and B ->mu(DX)-X-* decays, corresponding to an integrated luminosity of approximately 1 fb(-1). The events are divided into groups depending on the value of the combined tagging variable, and an independent analysis is performed in each group. Combining the results of these analyses, the overall effective tagging power is found to be epsilon D-2=(2.48 +/- 0.21(-0.06)(+0.08))%. The measured B-d(0) mixing frequency Delta m(d)=0.506 +/- 0.020(stat)+/- 0.016(syst) ps(-1) is in good agreement with the world average value.
ISSN:	1550-7998 2470-0010 1550-2368 1550-2368 2470-0029
DOI:	10.1103/PhysRevD.74.112002