Measurement of the polarization in the decays {ital B}{sub {ital d}}{r_arrow}{ital J}/{psi}{ital K}{sup *0} and {ital B}{sub {ital s}}{r_arrow}{ital J}/{psi}{phi}

Journal Article · Mon Oct 23 00:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.75.3068· OSTI ID:124814

Abe, F; Albrow, M G; Amendolia, S R; Amidei, D; Antos, J; Anway-Wiese, C; Apollinari, G; Areti, H; Atac, M; Auchincloss, P; Azfar, F; Azzi, P; Bacchetta, N; Badgett, W; Bailey, M W; Bao, J; de Barbaro, P; Barbaro-Galtieri, A; Barnes, V E; Barnett, B A ; Bartalini, P; Bauer, G; Baumann, T; Bedeschi, F; Behrends, S; Belforte, S; Bellettini, G; Bellinger, J; Benjamin, D; Benlloch, J; Bensinger, J; Benton, D; Beretvas, A; Berge, J P; Bertolucci, S; Bhatti, A; Biery, K; Binkley, M; Bird, F; Bisello, D; Blair, R E; Blocker, C; Bodek, A; Bokhari, W; Bolognesi, V; Bortoletto, D; Boswell, C; Boulos, T; Brandenburg, G; Bromberg, C; Buckley-Geer, E; Budd, H S; Burkett, K; Busetto, G; Byon-Wagner, A; Byrum, K L; Cammerata, J; Campagnari, C; Campbell, M; Caner, A; Carithers, W; Carlsmith, D; Castro, A; Cen, Y; Cervelli, F; Chao, H Y; Chapman, J; Cheng, M; Chiarelli, G; Chikamatsu, T; Chiou, C N; Christofek, L; Cihangir, S; Clark, A G; Cobal, M; Contreras, M; Conway, J; Cooper, J; Cordelli, M; Couyoumtzelis, C; Crane, D; Cunningham, J D; Daniels, T; DeJongh, F; Delchamps, S; Dell`Agnello, S; Dell`Orso, M; Demortier, L; Denby, B; Deninno, M; Derwent, P F; Devlin, T; Dickson, M; Dittmann, J R; Donati, S; Drucker, R B; Dunn, A; Einsweiler, K; Elias, J E; Ely, R; Engels, E Jr; Eno, S; Errede, D; Errede, S; Fan, Q; Farhat, B; Fiori, I; Flaugher, B; Foster, G W; Franklin, M; Frautschi, M; Freeman, J; Friedman, J; Fry, A; Fuess, T A; Fukui, Y; Funaki, S; Gagliardi, G; Galeotti, S; Gallinaro, M; Garfinkel, A F; Geer, S; Gerdes, D W; Giannetti, P; Giokaris, N; Giromini, P; Gladney, L; Glenzinski, D; Gold, M; Gonzalez, J; Gordon, A; Goshaw, A T; Goulianos, K; Grassmann, H; Grewal, A; Groer, L; Grosso-Pilcher, C; Haber, C; Hahn, S R; Hamilton, R; Handler, R; Hans, R M; Hara, K; Harral, B; Harris, R M; Hauger, S A; Hauser, J; Hawk, C

This Letter reports on measurements of the longitudinal polarization fractions in the decays {ital B}{sub {ital d}}{r_arrow}{ital J}/{psi}{ital K}{sup *0} and {ital B}{sub {ital s}}{r_arrow}{ital J}/{psi}{phi} using data collected with the Collider Detector at Fermilab. {ital B}{sub {ital d}} mesons are reconstructed through the decay chain {ital B}{sub {ital d}}{r_arrow}{ital J}/{psi}{ital K}*, {ital J}/{psi}{r_arrow}{mu}{sup +}{mu}{sup {minus}}, {ital K}{sup *0}{r_arrow}{ital K}{sup +}{pi}{sup {minus}}. A sample of 65{plus_minus}10{ital B}{sub {ital d}} events is used to obtain a longitudinal polarization fraction of {Gamma}{sub {ital L}}/{Gamma}=0.65{plus_minus}0.10(stat){plus_minus}0.04(syst). {ital B}{sub {ital s}} mesons are reconstructed through the decay chain {ital B}{sub {ital s}}{r_arrow}{ital J}/{psi}{phi}, {ital J}/{psi}{r_arrow}{mu}{sup +}{mu}{sup {minus}}, {phi}{r_arrow}{ital K}{sup +}{ital K}{sup {minus}}. A sample of 19{plus_minus}5{ital B}{sub {ital s}} events is used to obtain the result {Gamma}{sub {ital L}}/{Gamma}=0.56{plus_minus}0.21(stat){sub {minus}0.04}{sup +0.02}(syst). Copyright {ital 1995} {ital The} {ital American} {ital Physical} {ital Society}.

• OSTI ID: 124814
• Journal Information: Physical Review Letters, Vol. 75, Issue 17; Other Information: PBD: 23 Oct 1995
• Country of Publication: United States
• Language: English

Related Subjects

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B MESONS
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