Measurement of B<sup>0</sup>-B<sup>0</sup> flavor oscillations using jet-charge and lepton flavor tagging in pp collisions at s=1.8 TeV

We present a measurement of the mass difference md for the B0 meson and the statistical power of the b flavor tagging methods used. The measurement uses 90 pb-1 of data from pp collisions at s= 1.8 TeV collected with the CDF detector. An inclusive lepton trigger is used to collect a large sample of B hadron semileptonic decays. The mass difference md is determined from the proper time dependence of the fraction of B hadrons that undergo flavor oscillations. The flavor at decay is inferred from the charge of the lepton from semileptonic B decay. The initial flavor is inferred by determining the flavor of the other B hadron produced in the collision, either from its semileptonic decay (soft-lepton tag) or from its jet charge. The measurement yields md=(0.5000.0520.043) ps-1, where the first uncertainty is statistical and the second uncertainty is systematic. The statistical powers (D2) of the soft-lepton and jet-charge flavor taggers are (0.910.10 0.11)% and (0.780.120.08)%, respectively. 1999 The American Physical Society.

Abe, F., Akimoto, H., Akopian, A., Albrow, M. G., Amendolia, S. R., Amidei, D., ... Dell'Orso, M.

Abe, F||Akimoto, H||Akopian, A||Albrow, MG||Amendolia, SR||Amidei, D||Antos, J||Aota, S||Apollinari, G||Arisawa, T||Asakawa, T||Ashmanskas, W||Atac, M||Azzi-Bacchetta, P||Bacchetta, N||Bagdasarov, S||Bailey, MW||De Barbaro, P||Barbaro-Galtieri, A||Barnes, VE||Barnett, BA||Barone, M||Bauer, G||Baumann, T||Bedeschi, F||Behrends, S||Belforte, S||Bellettini, G||Bellinger, J||Benjamin, D||Bensinger, J||Beretvas, A||Berge, JP||Berryhill, J||Bertolucci, S||Bettelli, S||Bevensee, B||Bhatti, A||Biery, K||Bigongiari, C||Binkley, M||Bisello, D||Blair, RE||Blocker, C||Bloom, K||Blusk, S||Bodek, A||Bokhari, W||Bolla, G||Bonushkin, Y||Bortoletto, D||Boudreau, J||Brandl, A||Breccia, L||Bromberg, C||Bruner, N||Brunetti, R||Buckley-Geer, E||Budd, HS||Burkett, K||Busetto, G||Byon-Wagner, A||Byrum, KL||Campbell, M||Caner, A||Carithers, W||Carlsmith, D||Cassada, J||Castro, A||Cauz, D||Cerri, A||Chang, PS||Chang, PT||Chao, HY||Chapman, J||Cheng, MT||Chertok, M||Chiarelli, G||Chiou, CN||Chlebana, F||Christofek, L||Chu, ML||Cihangir, S||Clark, AG||Cobal, M||Cocca, E||Contreras, M||Conway, J||Cooper, J||Cordelli, M||Costanzo, D||Couyoumtzelis, C||Cronin-Hennessy, D||Cropp, R||Culbertson, R||Dagenhart, D||Daniels, T||DeJongh, F||Dell'Agnello, S||Dell'Orso, M

Measurement of B⁰-B⁰ flavor oscillations using jet-charge and lepton flavor tagging in pp collisions at s=1.8 TeV Academic Article