Measurement of Branching Fractions in Radiative BDecays to Eta K Gamma and Search for B Decays to Eta' K Gamma PDF Download
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Author: B. Aubert
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Languages : en
Pages : 7
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The authors present measurements of the B {yields} {eta}K{gamma} branching fractions and upper limits for the B {yields} {eta}'K{gamma} branching fractions. For B{sup +} {yields} {eta}K{sup +}{gamma} they also measure the time-integrated charge asymmetry. The data sample, collected with the BABAR detector at the Stanford Linear Accelerator Center, represents 232 x 10{sup 6} produced B{bar B} pairs. The results for branching fractions and upper limits at 90% C.L. in units of 10{sup -6} are: {Beta}(B{sup 0} {yields} {eta}K{sup 0}{gamma}) = 11.3{sub -2.6}{sup +2.8} {+-} 0.6, {Beta}(B{sup +} {yields} {eta}K{sup +}{gamma}) = 10.0 {+-} 1.3 {+-} 0.5, {Beta}(B{sup 0} {yields} {eta}'K{sup 0}{gamma})
Author: B. Aubert
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
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Book Description
The authors present measurements of the B {yields} {eta}K{gamma} branching fractions and upper limits for the B {yields} {eta}'K{gamma} branching fractions. For B{sup +} {yields} {eta}K{sup +}{gamma} they also measure the time-integrated charge asymmetry. The data sample, collected with the BABAR detector at the Stanford Linear Accelerator Center, represents 232 x 10{sup 6} produced B{bar B} pairs. The results for branching fractions and upper limits at 90% C.L. in units of 10{sup -6} are: {Beta}(B{sup 0} {yields} {eta}K{sup 0}{gamma}) = 11.3{sub -2.6}{sup +2.8} {+-} 0.6, {Beta}(B{sup +} {yields} {eta}K{sup +}{gamma}) = 10.0 {+-} 1.3 {+-} 0.5, {Beta}(B{sup 0} {yields} {eta}'K{sup 0}{gamma})
![Branching Fraction Measurements of B --] Eta C K Decays PDF](https://books.google.com/books/content/images/frontcover/_qSKAQAACAAJ?fife=w80-h100)
Author:
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Languages : en
Pages : 8
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We study the decays B 2![eta]{sub c}K and B° 2![eta]{sub c}K°, where the [eta]{sub c} is reconstructed in the K{sub S}° K{sup ±} [pi]{sup {-+}} and K+K− [pi]° decay modes. Results are based on a sample of 86 million B{bar B} pairs collected with the BABAR detector at the SLAC e+e− B Factory. We measure the branching fractions [Beta](B+ 2![eta]{sub c}K+) = (1.34 ± 0.09 ± 0.13 ± 0.41) x 10−3 and [Beta](B° 2![eta]{sub c}K°) = (1.18 ± 0.16 ± 0.13 ± 0.37) x 10−3, where the first error is statistical, the second is systematic, and the third reflects the [eta]{sub c} branching fraction uncertainty. In addition, we search for B 2![eta]{sub c}K events with [eta]{sub c} 2!2(K+K−) and [eta]{sub c} 2![phi][phi] and determine the [eta]{sub c} decay branching fraction ratios [Beta]([eta]{sub c} 2!2(K+K−))/[Beta]([eta]{sub c} 2!K{bar K}[pi]) = (2.3 ± 0.7 ± 0.6) x 10−2 and [Beta]([eta]{sub c} 2![phi][phi])/[Beta]([eta]{sub c} 2!K{bar K}[pi]) = (5.5 ± 1.4 {+-} 0.5) x 10−2.
Author: B. Aubert
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ISBN:
Category :
Languages : en
Pages : 15
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We measure the branching fraction of the radiative B{sup -} decay {Beta}(B{sup -} {yields} {phi}K{sup -}{gamma}) = (3.46 {+-} 0.57{sub -0.37}{sup +0.39}) x 10{sup -6}, and set an upper limit on the radiative {bar B}{sup 0} decay {Beta}({bar B}{sup 0} {yields} {phi}{bar K}{sup 0}{gamma})
![Measurements of B -] V Gamma Decays PDF](https://books.google.com/books/content/images/frontcover/tA-6AQAACAAJ?fife=w80-h100)
Author: Aaron Kevin Yarritu
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Languages : en
Pages :
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Observational evidence and theoretical motivation have led us to the conclusion that our current understanding of the universe is incomplete. While new physics is expected to exist above the electroweak scale, its influence can be detected by experiments that operate below this scale. The Babar experiment has recorded approximately 432 fb-1 of data at the center of mass energy of 10.58 GeV, which corresponds to the Y(4S) mass. One of the physics programs is studying radiative decays of the B meson. These decays primarily proceed through loop diagrams, and thus influences of new particles may be detectable. In this thesis, I present results of the measurements of the branching fractions, CP asymmetry, and isospin asymmetry of B -> K* gamma. Results are also presented for the measurements of the branching fractions of B -> rho(omega) gamma. Finally, a search for the decay of B -> phi gamma is given.
![Measurement of the Exclusive Branching Fractions B° 2![eta]K*° and B 2![eta]K* PDF](https://books.google.com/books/content/images/frontcover/yYVWAQAACAAJ?fife=w80-h100)
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Languages : en
Pages : 13
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The authors present the results of searches for B decays to the two charmless two-body final states B° 2![eta]K*° and B 2![eta]K*, based on 20.7 fb−1 of data collected in 1999 and 2000 with the BABAR detector at PEP-II. They find the branching fractions [Beta](B° 2![eta]K*°) = (19.8 {sub -5.6}{sup +6.5} ± 1.7) x 10−6 and [Beta](B+ 2![eta]K*+) = (22.1 {sub -9.2}{sup +11.1} ± 3.3) x 10−6, where the first error quoted is the statistical and the second systematic.
Author: Tilmann Colberg
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ISBN:
Category :
Languages : en
Pages : 106
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Author: Tilmann Colberg
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Languages : en
Pages :
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Author: K. Koeneke
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Languages : en
Pages :
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The branching fraction of the radiative penguin B meson decay B{sup {+-}} {yields} K*{sup {+-}}{gamma} is measured at the PEP-II asymmetric energy e{sup +}e{sup -} collider, operating at a center of momentum energy of 10.58 GeV, the {Upsilon}(4S) resonance. This document concentrates on the case K*{sup {+-}} {yields} K{sup {+-}}{pi}{sup 0}; {pi}{sup 0} {yields} {gamma}{gamma}. This analysis is based on a dataset of 88.2-million {Upsilon}(4S) {yields} B{bar B} events corresponding to 81.3 fb{sup -1} collected with the BABAR detector.
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Languages : en
Pages : 9
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The authors present measurements of the branching fractions for the charmless two-body decays B° →??− and B° → K+?−, and a search for the decay B° → K+K−. They include the effects of final-state radiation from the daughter mesons for the first time, and quote branching fractions for the inclusive processes B° → h+h'−n?, where h and h' are pion or kaons. The maximum value of the sum of the energies of the n undetected photons, E{sub {gamma}}{sup max}, is mode-dependent. Using a data sample of approximately 227 million?(4S) → B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy e+e− collider at SLAC.
![Measurement of Branching Fractions for B[sup 0][yields] K*[sub 2](1430)[sup 0][gamma] and B[sup+][yields] K*[sub 2](1430)[sup+][gamma] Branching Fractions PDF](https://books.google.com/books/content/images/frontcover/EtvtjwEACAAJ?fife=w80-h100)
Author:
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Languages : en
Pages :
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We have investigated the exclusive, radiative B-meson decay to the charmless meson K*[sub 2](1430) in 88.5 x 10[sup 6] B[bar B] events accumulated between 1999 and 2002 with the BABAR detector at the PEP-II storage ring. We present a preliminary measurement of the branching fractions[Beta](B[sup 0][yields] K*[sub 2](1430)[sup 0][gamma])= (1.22[+-] 0.25[+-] 0.11) x 10[sup -5] and[Beta](B[sup+][yields] K*[sub 2](1430)[sup+][gamma])= (1.44[+-] 0.40[+-] 0.13)x 10[sup -5], where the first error is statistical and the second systematic.
