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Study of B-s(0)-(B-s(0))over-bar oscillations and B-s(0) lifetimes using hadronic decays of B-s(0) mesons

Abreu, P. et al. (2000) Study of B-s(0)-(B-s(0))over-bar oscillations and B-s(0) lifetimes using hadronic decays of B-s(0) mesons. European Physical Journal C, 18 (2). 229 -252. ISSN 1434-6044 (doi:10.1007/s100520000531)

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Publisher's URL: http://www.springerlink.com/openurl.asp?genre=article&id=doi:10.1007/s100520000531

Abstract

Oscillations of B-s(0) mesons have been studied in samples selected from about 3.5 million hadronic Z decays detected by DELPHI between 1992 and 1995. One analysis uses events in the exclusive decay channels: B-s(0) → D(s)(-)pi (+) or D(s)(- )a(1)(+) and B-s(0) → (D) over bar (0)K(-)pi (+) or (D) over bar (0)K(-)a(1)(+), where D decays are completely reconstructed. In addition, B-s(0)-(B) over bar (0)(s) oscillations have been studied in events with an exclusively reconstructed D, accompanied in the same hemisphere by a high momentum hadron of opposite charge. Combining the two analyses, a limit on the mass difference between the physical B-s(0) states has been obtained: Deltam(Bs0) gt 4.0 ps(-1) at the 95% C.L. with a sensitivity of Deltam(Bs0) = 3.2 ps(-1) Using the latter sample of events, the B-s(0) lifetime has been measured and an upper limit on the decay width difference between the two physical B-s(0) states has been obtained: tau (Bs0) = 1.53(-0.15)(+0.16)(stat.) +/- 0.07(syst.) ps Delta Gamma (Bs0)/Gamma (Bs0) lt 0.69 at the 95% C.L. The combination of these results with those obtained using D(s)(+/-)l(+/-) sample gives: Deltam(Bs0) gt 4.9 ps(-1) at the 95% C.L. with a sensitivity of Deltam(Bs0) = 8.7 ps(-1) tau (Bs0) = 1.46 +/- 0.11 ps and Delta Gamma (Bs0)/Gamma (Bs0) lt 0.45 at the 95% C.L.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:UNSPECIFIED
Authors: Abreu, P., Adam, W., Adye, T., Adzic, P., Ajinenko, I., Albrecht, Z., Alderweireld, T., Alekseev, G.D., Alemany, R., Allmendinger, T., Allport, P.P., Almehed, S., Amaldi, U., Amapane, N., Amato, S., Anassontzis, E.G., Andersson, P., Andreazza, A., Andringa, S., Antilogus, P., Apel, W.D., Arnoud, Y., Asman, B., Augustin, J.E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbiellini, G., Barbier, R., Bardin, D.Y., Barker, G., Baroncelli, A., Battaglia, M., Baubillier, M., Becks, K.H., Begalli, M., Behrman, A., Beilliere, P., Belokopytov, Y., Benekos, N.C., Benvenuti, A.C., Berat, C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bigi, M., Bilenky, M.S., Bizouard, M.A., Bloch, D., Blom, H.M., Bonesini, M., Bonivento, W., Boonekamp, M., Booth, P.S.L., Borgland, A.W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T.J.V., Boyko, I., Bozovic, I., Bozzo, M., Bracko, M., Branchini, P., Brenke, T., Brenner, R.A., Bruckman, P., Brunet, J.M., Bugge, L., Buran, T., Burgsmueller, T., Buschbeck, B., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camporesi, T., Canale, V., Carena, F., Carroll, L., Caso, C., Gimenez, M.V.C., Cattai, A., Cavallo, F.R., Chabaud, V., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G.A., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cieslik, K., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H.B., Crennell, D., Crepe, S., Crosetti, G., Maestro, J.C., Czellar, S., Davenport, M., Da Silva, W., Deghorain, A., Della Ricca, G., Delpierre, P., Demaria, N., De Angelis, A., De Boer, W., De Clercq, C., De Lotto, B., De Min, A., de Paula, L., Dijkstra, H., Di Ciaccio, L., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Dris, M., Duperrin, A., Durand, J.D., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Santo, M.E., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Fenyuk, A., Ferrari, P., Ferrer, A., Ferrer-Ribas, E., Ferro, F., Fichet, S., Firestone, A., Flagmeyer, U., Foeth, H., Fokitis, E., Fontanelli, F., Franek, B., Frodesen, A.G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gamblin, S., Gandelman, M., Garcia, C., Gaspar, C., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E.N., Gele, D., Ghodbane, N., Gil, I., Glege, F., Gokieli, R., Golob, B., Gomez-Ceballos, G., Goncalves, P., Caballero, I.G., Gopal, G., Gorn, L., Gouz, Y., Gracco, V., Grahl, J., Graziani, E., Grimm, H.J., Gris, P., Grosdidier, G., Grzelak, K., Gunther, M., Guy, J., Hahn, F., Hahn, S., Haider, S., Hallgren, A., Hamacher, K., Hansen, J., Harris, F.J., Hedberg, V., Heising, S., Hernandez, J.J., Herquet, P., Herr, H., Hessing, T.L., Heuser, J.M., Higon, E., Holmgren, S.O., Holt, P.J., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hughes, G.J., Hultqvist, K., Jackson, J.N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Jeans, D., Johansson, E.K., Jonsson, P., Joram, C., Juillot, P., Kapusta, F., Karafasoulis, K., Katsanevas, S., Katsoufis, E.C., Keranen, R., Kernel, G., Kersevan, B.P., Khomenko, B.A., Khovanski, N.N., Kiiskinen, A., King, B., Kinvig, A., Kjaer, N.J., Klapp, O., Klein, H., Kluit, P., Kokkinias, P., Koratzinos, M., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kriznic, E., Krumstein, Z., Kubine, P., Kurowska, J., Kurvinen, K., Lamsa, J.W., and Lane, D.W.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal C
ISSN:1434-6044

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