Measurement of the CP - Violation Parameter sin ( 2 β ) in B 0 d / B 0 d → J / ψK 0 S Decays
نویسندگان
چکیده
F. Abe, H. Akimoto, A. Akopian, M. G. Albrow, A. Amadon, S. R. Amendolia, D. Amidei, J. Antos, S. Aota, G. Apollinari, T. Arisawa, T. Asakawa, W. Ashmanskas, M. Atac, P. Azzi-Bacchetta, N. Bacchetta, S. Bagdasarov, M. W. Bailey, P. de Barbaro, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, M. Barone, G. Bauer, T. Baumann, F. Bedeschi, S. Behrends, S. Belforte, G. Bellettini, J. Bellinger, D. Benjamin, J. Bensinger, A. Beretvas, J. P. Berge, J. Berryhill, S. Bertolucci, S. Bettelli, B. Bevensee, A. Bhatti, K. Biery, C. Bigongiari, M. Binkley, D. Bisello, R. E. Blair, C. Blocker, S. Blusk, A. Bodek, W. Bokhari, G. Bolla, Y. Bonushkin, D. Bortoletto, J. Boudreau, L. Breccia, C. Bromberg, N. Bruner, R. Brunetti, E. Buckley-Geer, H. S. Budd, K. Burkett, G. Busetto, A. Byon-Wagner, K. L. Byrum, M. Campbell, A. Caner, W. Carithers, D. Carlsmith, J. Cassada, A. Castro, D. Cauz, A. Cerri, P. S. Chang, P. T. Chang, H. Y. Chao, J. Chapman, M. -T. Cheng, M. Chertok, G. Chiarelli, C. N. Chiou, F. Chlebana, L. Christofek, M. L. Chu, S. Cihangir, A. G. Clark, M. Cobal, E. Cocca, M. Contreras, J. Conway, J. Cooper, M. Cordelli, D. Costanzo, C. Couyoumtzelis, D. Cronin-Hennessy, R. Culbertson, D. Dagenhart, T. Daniels, F. DeJongh, S. Dell’Agnello, M. Dell’Orso, R. Demina, L. Demortier, M. Deninno, P. F. Derwent, T. Devlin, J. R. Dittmann, S. Donati, J. Done, T. Dorigo, N. Eddy, K. Einsweiler, J. E. Elias, R. Ely, E. Engels, Jr., W. Erdmann, D. Errede, S. Errede, Q. Fan, R. G. Feild, Z. Feng, C. Ferretti, I. Fiori, B. Flaugher, G. W. Foster, M. Franklin, J. Freeman, J. Friedman, Y. Fukui, S. Gadomski, S. Galeotti, M. Gallinaro, O. Ganel, M. Garcia-Sciveres, A. F. Garfinkel, C. Gay, S. Geer, D. W. Gerdes, P. Giannetti, N. Giokaris, P. Giromini, G. Giusti, M. Gold, A. Gordon, A. T. Goshaw, Y. Gotra, K. Goulianos, H. Grassmann, L. Groer, C. Grosso-Pilcher, G. Guillian, J. Guimaraes da Costa, R. S. Guo, C. Haber, E. Hafen, S. R. Hahn, R. Hamilton, T. Handa, R. Handler, F. Happacher, K. Hara, A. D. Hardman, R. M. Harris, F. Hartmann, J. Hauser, E. Hayashi, J. Heinrich, W. Hao, B. Hinrichsen, K. D. Hoffman, M. Hohlmann, C. Holck, R. Hollebeek, L. Holloway, Z. Huang, B. T. Huffman, R. Hughes, J. Huston, J. Huth, H. Ikeda, M. Incagli, J. Incandela, G. Introzzi, J. Iwai, Y. Iwata, E. James, H. Jensen, U. Joshi, E. Kajfasz, H. Kambara, T. Kamon, T. Kaneko, K. Karr, H. Kasha, Y. Kato, T. A. Keaffaber, K. Kelley, R. D. Kennedy, R. Kephart, D. Kestenbaum, D. Khazins, T. Kikuchi, B. J. Kim, H. S. Kim, S. H. Kim, Y. K. Kim, L. Kirsch,
منابع مشابه
B Cp -violation, Mixing and Lifetime Results from Belle
Recent results on the B CP -violation parameter sin 2φ1, the B 0 d-B 0 d mixing parameter ∆md and B-meson lifetimes are reported. The results are based on 10.5 fb of data collected with the Belle detector at KEKB. Using both semileptonic and hadronic decay modes the neutral and charged B-meson lifetimes are measured to be τ (B d) = 1.548 ± 0.035 (stat.) ps and τ (B) = 1.656±0.038 (stat.) ps. Th...
متن کاملOn determining CKM angles α and β
Because the B d → J/ψK S asymmetry determines only sin 2β, a discrete ambiguity in the true value of β remains. This note reviews how the ambiguity can be removed. Extractions of the CKM angle α are discussed next. Some of the methods require very large data samples and will not be feasible in the near future. In the near future, semi-inclusive CP-violating searches could be undertaken, which a...
متن کاملImproved Measurement of Cp Asymmetry in the Neutral B Meson System
We present an improved measurement of the standard model CP violation parameter sin 2φ1 (also known as sin 2β) based on a sample of 45×10 BB pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy ee collider. One neutral B meson is reconstructed in the J/ψK S, ψ(2S)K 0 S , χc1K 0 S , ηcK 0 S , J/ψK , or J/ψK L CP -eigenstate decay channel and the flavor of ...
متن کاملFlavor Tagging and Cp-violation Measurements at the Tevatron
The CDF collaboration has adapted several heavy flavor tagging techniques and employed them in analyses of time-dependent flavor asymmetries using data from the Tevatron Run I. The tagging algorithms were calibrated using low-Pt inclusive lepton and dilepton trigger data samples. The tagging techniques were applied to a sample of ∼ 400 B d /Bd → J/ψK 0 s decays and were used to measure the CP v...
متن کاملChargino contributions to the CP asymmetry in B → φK S decay
We perform a model independent analysis of the chargino contributions to the CP asymmetry in B → φK S process. We use the mass insertion approximation method generalized by including the possibility of a light right-stop. We find that the dominant effect is given by the contributions of the mass insertions (δ u LL) 32 and (δ u RL) 32 to the Wilson coefficient of the chromomagnetic operator. By ...
متن کاملar X iv : h ep - e x / 02 07 07 5 v 1 2 5 Ju l 2 00 2 sin 2 φ 1 with 45 Million BB Pairs at Belle ∗
We present an improved measurement of the standard model CP violation parameter sin 2φ1 (also known as sin 2β) based on a sample of 45 × 10 6 BB pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. One neutral B meson is reconstructed in a J/ψK0 S , ψ(2S)K 0 S , χc1K 0 S , ηcK 0 S , J/ψK ∗0, or J/ψK0 L CP -eigenstate decay channel and the f...
متن کامل