Author: Publisher:
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Languages : en
Pages :
Book Description
Search for the Radiative Decay B0 to Phi Gamma
Author: Radiative Penguin Decays of B Mesons
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Electromagnetic radiative penguin decays of the B meson were studied with the BaBar detector at SLAC's PEP-II asymmetric-energy B Factory. Branching fractions and isospin asymmetry of the decay B → K*[gamma], branching fractions of B → K*2(1430)[gamma], and a search for B° → [phi][gamma] are presented. The decay rates may be enhanced by contributions from non-standard model processes.
A Search for the Rare Decay B0 2![gamma][gamma].
![A Search for the Rare Decay B0 2![gamma][gamma]. PDF](https://books.google.com/books/content/images/frontcover/QIFPAQAACAAJ?fife=w80-h100)
Author: Publisher:
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Languages : en
Pages : 197
Book Description
This thesis describes a search for the rare radiative decay B0 → [gamma][gamma], where the charged congugate mode is implied throughout. These decays are highly suppressed in the Standard Model where the branching fraction is expected to be of order 10-8. In some new physics scenarios this could be enhanced by up to an order of magnitude to 10-7. Therefore an observation of a significant signal above the Standard Model prediction could be a sign of new physics.
Search for the Decay B[sup 0] --] J/[psi] [gamma].
![Search for the Decay B[sup 0] --] J/[psi] [gamma]. PDF](https://books.google.com/books/content/images/frontcover/w73rjwEACAAJ?fife=w80-h100)
Author: Publisher:
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Languages : en
Pages :
Book Description
The authors present the results of a search for the radiative decay B[sup 0] --> J/[psi][gamma] in a data set containing 123 million [Upsilon](4S) --> B[bar B] decays, collected by the BABAR detector at the PEP-II asymmetric-energy E[sup +]e[sup -] storage ring at SLAC. They find no evidence for a signal and place an upper limit of B(B[sup 0] --> J/[psi][gamma])
Search for the Rare Radiative Decay
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 15
Book Description
We present a search for the rare radiative decay W{sup {+-}} →?{sup {+-}}? using data corresponding to an integrated luminosity of 4.3 fb−1 of proton-antiproton collisions at a center of mass energy of 1.96 TeV collected by the CDF experiment at Fermilab. As no statistically significant signal is observed, we set a 95% confidence level upper limit on the relative branching fraction?(W{sup {+-}} →?{sup {+-}}?)/?(W{sup {+-}} → e{sup {+-}}?) at 6.4 x 10−5, a factor of 10 improvement over the previous limit.
Search for the Decay B° --] J/[psi] [gamma].
![Search for the Decay B° --] J/[psi] [gamma]. PDF](https://books.google.com/books/content/images/frontcover/jd2UAQAACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
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Languages : en
Pages : 5
Book Description
The authors present the results of a search for the radiative decay B° --> J/[psi][gamma] in a data set containing 123 million [Upsilon](4S) --> B{bar B} decays, collected by the BABAR detector at the PEP-II asymmetric-energy Ee− storage ring at SLAC. They find no evidence for a signal and place an upper limit of B(B° --> J/[psi][gamma])
Measurement of B Decays to Phi K Gamma
Author: B. AubertPublisher:
ISBN:
Category :
Languages : en
Pages : 15
Book Description
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
![Measurements of B -] V Gamma Decays PDF](https://books.google.com/books/content/images/frontcover/tA-6AQAACAAJ?fife=w80-h100)
Author: Aaron Kevin YarrituPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Search for Radiative Decays of D0 Mesons at the BABAR Detector
Author: Joseph James RegensburgerPublisher:
ISBN:
Category : Mesons
Languages : en
Pages : 184
Book Description
Abstract: I detail my work searching for the radiative decays of D0 mesons, e.g. D0 -- [phi][gamma], within 381.7 fb−1 of ee− data collected by the BABAR detector at the PEP-II asymmetric-energy ee− collider at SLAC from 1999-2006. Such decays are not well described under perturbative techniques typically used to estimate the frequency of decays under the Standard Model of Particle Physics (SM), and as such are valuable laboratories to investigate quantum chromodyanmics calculations (QCD). I specifically examine the Cabibbo-suppressed (CS) D0 -- [phi][gamma] decay as well as search for the yet unobserved Cabibbo-favored (CF) decay, D0 -- [kappa]*0[gamma]. I measure the branching fractions of each mode relative to the decay D0 -- [kappa]−[pi] and find: B(D0 -- [phi][gamma]) = (2.73 " 0.30 " 0.26) x 10−5 and B(D0 -- [kappa]*0[gamma]) = (3.22 " 0.20 " 0.27) x 10−4 These results are preliminary and currently under review by the BABAR collaboration ahead of publication. In these expressions the first error is due to statistical sources and the second is due to systematic sources.
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