Measurement of the Photon Energy Spectrum and Branching Fraction for the Decay Bu8594?Xs G Us Ing the BaBar Detector PDF Download
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Languages : en
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Languages : en
Pages : 3
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We present measurements of the Branching Fraction and photon energy spectrum in B → X{sub S}[gamma] decays in a sample of 89 million B{bar B} pairs collected at the BABAR detector at Stanford Linear Accelerator Center's PEP-II asymmetric B-factory. Results from a fully-inclusive and a sum of 38 exclusive final states techniques are presented and found to be consistent with the Standard Model calculations, as well as experimental results obtained from semileptonic B → X{sub c}lv decays.
![Measurement of Branching Fraction and Polarization in the Decay [Beta]0 [right Arrow] [rho]+[rho]− PDF](https://books.google.com/books/content/images/frontcover/PU5OAQAAMAAJ?fife=w80-h100)
Author: Yuriy V. Groysman
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Languages : en
Pages : 214
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Languages : en
Pages : 5
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We report a measurement of the branching fraction of the decay B° 2!D*D*−1 and of the CP-odd component of its final state using the BABAR detector. With data corresponding to an integrated luminosity of 20.4 fb−1 collected at the [Upsilon](4S) resonance during 1999-2000, we have reconstructed 38 candidate signal events in the mode B° 2!D*D*−1 with an estimated background of 6.2 ± 0.5 events. From these events, we determine the branching fraction to be [Beta](B° 2!D*+D*−1) = (8.3 ± 1.6(stat) ± 1.2(syst)) x 10−4. The measured CP-odd fraction of the final state is 0.22 ± 0.18(stat) ± 0.03(syst).
![A Measurement of the B ---] Eta/C K Branching Fraction Using the BaBar Detector PDF](https://books.google.com/books/content/images/frontcover/b0hUAQAACAAJ?fife=w80-h100)
Author: Frank Jackson
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Languages : en
Pages : 213
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The branching fraction is measured for the decay channels B{sup 0} {yields} {eta}{sub c}K{sub S}{sup 0} and B{sup +} {yields} {eta}{sub c}K{sup +} where {eta}{sub c} {yields} K{bar K}{pi}, using the BABAR detector. The {eta}{sub c} {yields} K{sub S}{sup 0}K{sup +}{pi}{sup -} and {eta}{sub c} {yields} K{sup +}K{sup -}{pi}{sup 0} decay channels are used, including non-resonant decays and possibly those through intermediate resonances.
![Measurement of the Branching Fraction for B- ---]D0 K*- PDF](https://books.google.com/books/content/images/frontcover/3vj9wQEACAAJ?fife=w80-h100)
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Languages : en
Pages : 10
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The authors present a measurement of the branching fraction for the decay B− → D° K{sup *-} using a sample of approximately 86 million B{bar B} pairs collected by the BABAR detector from ee− collisions near the?(4S) resonance. The D° is detected through its decays to K−?+, K−?+?° and K−?+?−?+, and the K{sup *-} through its decay to K{sub S}°?−. They measure the branching fraction to be?(B− → D°K{sup *-}) = (6.3 ± 0.7(stat.)±0.5(syst.)) x 10−4.
![Studying B --] S Gamma at BABAR Using a Fully Inclusive Method PDF](https://books.google.com/books/content/images/frontcover/hq4RDAEACAAJ?fife=w80-h100)
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Languages : en
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The b [yields] s[gamma] decay represents a possible electromagnetic ''loop'' penguin decay of the B meson. This FCNC process is of high theoretical interest because various scenarios of new physics are expected to have contributions at the same (one loop) level as the Standard Model. The large sample of B[bar B] meson decays collected by the BaBar experiment makes a precision measurement of this rare decay possible. In conjunction with Standard Model predictions at the 10% level, it brings new physics effects into the realm of detection--or seriously constrains models that could predict them. A fully inclusive technique is presented to study the b [yields] s[gamma] transition as a function of photon energy, using 88.5 [+-] 1.0 x 10[sup 6] B[bar B] meson decays collected by the BaBar experiment in the years 2000 to 2002. The expected statistical and systematic uncertainties have been fully determined which enables first comparisons with theoretical predictions and other experimental results. It also lays the basis for the determination of the inclusive branching fraction [Beta](B [yields] X[sub s][gamma]) and the measurement of the photon energy spectrum.
![Measurement of the Branching Fraction for the Decay B°--]D{sup *+}D{sup *-} PDF](https://books.google.com/books/content/images/frontcover/DlqZAQAACAAJ?fife=w80-h100)
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Languages : en
Pages : 13
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Decays of the type B 2!D{sup (*)} {bar D}(*) can be used to provide a measurement of the parameter sin2[beta] of the Unitarity Triangle that is complementary to the measurement derived from the mode B° 2!K{sub S}°. In this document we report a measurement of the branching fraction for the decay B° 2!D*D*− with the BABAR detector. With data corresponding to an integrated luminosity of 20.7 fb−1 collected at the [Upsilon](4S) resonance during 1999-2000, we have reconstructed 38 candidate signal events in the mode B° 2!D*D*− with an estimated background of 6.2 ± 0.5 events. From these events, we determine the branching fraction to be [Beta](B° 2!D*+D*−) = (8.0 ± 1.6(stat) ± 1.2(syst)) x 10−4 (preliminary). The measured fraction of the component with odd CP parity is 0.27± 0.17(stat) ± 0.02(syst).
![Measurement of the Branching Fraction for the Decay B± [arrow] K*±[gamma], K*± [arrow] K±[pi]0 with the BaBar Detector PDF](https://books.google.com/books/content/images/frontcover/VrZNNwAACAAJ?fife=w80-h100)
Author: Karsten Köneke
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Category : B mesons
Languages : en
Pages : 198
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