Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
A Search For The Rare Decay B0 2gammagamma
Download A Search For The Rare Decay B0 2gammagamma full books in PDF, epub, and Kindle. Read online A Search For The Rare Decay B0 2gammagamma ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis A Search for the Rare Decay B0 2![gamma][gamma]. by :
Download or read book A Search for the Rare Decay B0 2![gamma][gamma]. written by and published by . This book was released on 2010 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis A Search for the Rare Decay B0 {u2192} ??. by :
Download or read book A Search for the Rare Decay B0 {u2192} ??. written by and published by . This book was released on 2010 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes a search for the rare radiative decay B0 → ??, 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.
Book Synopsis A Search for the Rare Decay B -] Pi Ll− by : Bradley Cole Wray
Download or read book A Search for the Rare Decay B -] Pi Ll− written by Bradley Cole Wray and published by . This book was released on 2012 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a search for the rare B meson decay B -> pi ll− (l=e or mu) using 428 fb−1 of data collected at the Upsilon(4S) resonance by the BaBar detector at the PEP-II asymmetric energy ee− storage rings located located at SLAC National Accelerator Laboratory in Menlo Park, California. Four exclusive modes are studied: B+ -> pi+ e+e−, B+ -> pi+ mu+mu−, B0 -> pi0 e+e−, and B0 -> pi0 mu+mu−. Branching fraction upper limits at the 90% confidence level are presented for the exclusive modes B+ -> pi+ mu+mu− and B0 -> pi0 mu+mu−, and the combined mode B -> pi mu+mu−.
Book Synopsis A Search for the Rare Decay [B Meson to Two Photons] by : Andrew Michael Ruland
Download or read book A Search for the Rare Decay [B Meson to Two Photons] written by Andrew Michael Ruland and published by . This book was released on 2010 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes a search for the rare radiative decay of a B meson to two photons. 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. The search for this rare decay was performed using the data collected with the BaBar detector at the SLAC National Accelerator Laboratory PEP-II storage ring operating at the Upsilon(4S) resonance. The analysis uses a dataset with an integrated luminosity of 425.7 fb-1 corresponding to 467 million BB pairs. A signal yield of 21.3 +12.8 -11.8 events with a significance of 1.88 sigma was measured using an unbinned extended maximum likelihood fit. An upper limit on the branching fraction is set at the 90% confidence level of less than 3.2 times 10^-7. This is about two times more stringent than the best upper limit of less than 6.2 times 10^-7 published by the Belle collaboration.
Book Synopsis A Search for the Rare Decay $B\rightarrow\gamma\gamma$ by :
Download or read book A Search for the Rare Decay $B\rightarrow\gamma\gamma$ written by and published by . This book was released on 2011 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report the result of a search for the rare decay B° 2![gamma][gamma] in 426 fb−1 of data, corresponding to 226 million B°{bar B}° pairs, collected on the [Upsilon](4S) resonance at the PEP-II asymmetric-energy ee− collider using the BABAR detector. We use a maximum likelihood fit to extract the signal yield and observe 2112{sup +13} signal events with a statistical signficance of 1.9 [sigma]. This corresponds to a branching fraction [Beta](B° 2![gamma][gamma]) = (1.7 ± 1.1(stat.) ± 0.2(syst.)) x 10−7. Based on this result, we set a 90% confidence level upper limit of [Beta](B° 2![gamma][gamma])
Book Synopsis Search for the Rare Decay $B_s^0 \to \mu^+\mu^-$ at by :
Download or read book Search for the Rare Decay $B_s^0 \to \mu^+\mu^-$ at written by and published by . This book was released on 2013 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for the Decay B° 2!gamma-gamma by :
Download or read book Search for the Decay B° 2!gamma-gamma written by and published by . This book was released on 2001 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a limit on the branching fraction for the decay B° 2![gamma][gamma] using data collected at the [Upsilon](4S) resonance with the BABAR detector at the PEP-II asymmetric--energy ee− collider. Based on the observation of one event in the signal region, out of a sample of 21.3 x 106 ee− 2 2!B{bar B} decays, we establish an upper limit on the branching fraction of [Beta] (B° 2![gamma][gamma])
Book Synopsis Search for the Rare Decay B0 → J/ψφ by : Roel Aaij
Download or read book Search for the Rare Decay B0 → J/ψφ written by Roel Aaij and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for the Rare Decay B {u2192} ?l+l- in the BaBar Experiment by :
Download or read book Search for the Rare Decay B {u2192} ?l+l- in the BaBar Experiment written by and published by . This book was released on 2006 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rare decay B → ?ll- is the simplest manifestation of a b → dl+l- flavor-changing neutral current (FCNC) process. This type of process only proceeds through penguin loop or box diagrams and is sensitive to physics at the electroweak scale. It can be used to constrain parameters of the Standard Model and its extensions. B → ?l+l- events have not yet been observed; the branching fraction is expected to be an order of magnitude smaller than the measured branching fraction for the similar B → Kl+l- decay. Using 230 million B$ar{B}$ meson pairs collected with the BABAR detector, we have done a search for the rare decay B →?l+l- . The data was produced in e+e- collision at the Y(4S) resonance in the PEP-II collider between 1999 and 2004. Four exclusive B-meson decay modes have been reconstructed: B+ → ?+l+l- and B0 → ?0l+l- , where l+ l- is either an electron pair (e+e-) or a muon pair (?+?-). We find no evidence for a signal, and we obtain upper limits on the branching fractions ?. Assuming the isospin relation ?(B+ → ?+l+l- ) 2 x ?B+/?B0 ?(B0 → ?0l+l-), we obtain an upper limit at 90% confidence level on the lepton-flavor-averaged branching fraction of B → ?l+l- to be ?(B → ?e?) 9.2 x 10sup-8 /supat 90% C.L. We have also reconstructed two control modes Bsup+/sup→ ?sup+/supesup±/sup?sup±/sup and Bsup0/sup → ?sup0/supesup±/sup?sup±/sup and we also obtain an upper limit at 90% confidence level on the lepton-flavor-violating decay B → ?e? of ?(B → ?e?) 9.2 x 10
Book Synopsis Search for the Rare Decay B0 - J/[psi]/[gamma] in the BABAR Experiment by : Sheila McLachlin
Download or read book Search for the Rare Decay B0 - J/[psi]/[gamma] in the BABAR Experiment written by Sheila McLachlin and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for the Rare Decay B[sup 0] to D[sub S][sup +] Rho[sup -]. by :
Download or read book A Search for the Rare Decay B[sup 0] to D[sub S][sup +] Rho[sup -]. written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report on a search for the decay B[sup 0] --> D[sub s][sup +][rho][sup -] in a sample of 90 x 10[sup 6] [Upsilon](4S) decays into B meson pairs collected between 1999 and 2001 with the BABAR detector at the PEP-II asymmetric-energy e[sup +]e[sup -] collider. No significant excess of signal events above the expected background is observed. The authors set a 90% C.L. limit on the branching fraction B(B[sup 0] --> D[sub s][sup +][rho][sup -]) 1.9 x 10[sup -5]. Assuming a flavor SU(3) symmetry relation between the decays B[sup 0] -- D[sub s][sup +][rho][sup -] and B[sup 0] --> D[sup +][rho][sup -], they set a limit on the ratio of CKM-suppressed to CKM-favored amplitudes r(D[rho])
Book Synopsis The Search for the Rare Decay B to A0+pi0 by : W. Vazquez
Download or read book The Search for the Rare Decay B to A0+pi0 written by W. Vazquez and published by . This book was released on 2006 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for the decay B{+-} {yields} a{sub 0}{sup {+-}}{pi}{sup 0} with the a{sub 0}{sup +} decaying to an {eta} and a {pi}{sup +} was carried out at the Stanford Linear Accelerator Center using the BABAR detector coupled with the PEP-II collider. The analysis used a data sample comprised of approximately 252 million B{bar B} pairs collected at the {Upsilon}(4S) resonance. No signal was observed and a 90% confidence level upper limit on the branching fraction was set at 1.32 x 10{sup -6}.
Book Synopsis Search for the Rare Decay B0bar -] D*0 Gamma by :
Download or read book Search for the Rare Decay B0bar -] D*0 Gamma written by and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on a search for the rare decay {bar B}° → D*°[gamma], which in the standard model is dominated by W-exchange. The analysis is based on a data sample comprising 87.8 x 106 B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. No significant signal is observed, and an upper limit on the branching fraction of 2.5 x 10−5 at the 90% confidence level is obtained.
Book Synopsis A Search for the Rare Decay B0 (arrow Tau Tau−) at the Babar Experiment by : Christopher Thomas Potter
Download or read book A Search for the Rare Decay B0 (arrow Tau Tau−) at the Babar Experiment written by Christopher Thomas Potter and published by . This book was released on 2005 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for the Rare Decay [mu]+ --> E+[gamma][gamma] by : David Paul Grosnick
Download or read book A Search for the Rare Decay [mu]+ --> E+[gamma][gamma] written by David Paul Grosnick and published by . This book was released on 1987 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for the Rare Decay B0 - J/Ψγ in the BABAR Experiment by : Sheila McLachlin
Download or read book Search for the Rare Decay B0 - J/Ψγ in the BABAR Experiment written by Sheila McLachlin and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for the Rare Decay B-]tau+tau- at the BaBar Experiment by : Christopher Thomas Potter
Download or read book A Search for the Rare Decay B-]tau+tau- at the BaBar Experiment written by Christopher Thomas Potter and published by . This book was released on 2006 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Standard Model of particle physics predicts that the branching ratio for the rare decay B{sup 0} {yields} {tau}{sup +}{tau}{sup -} is 3.1 x 10{sup -8}, though untested models which could supersede it predict large enhancements. This dissertation describes the search for this rare decay in 210.4 fb{sup -1} of B{sup 0}{bar B}{sup 0} data collected at the {Upsilon}(4S) resonance in the Babar detector at the Stanford Linear Accelerator Center. In the analysis, one neutral B meson is fully reconstructed in a hadronic mode and recoil events which are consistent with each tau decaying in a mode {tau} {yields} {pi}{nu}, {rho}{nu}, or l{nu}{bar {nu}} are selected. There is no evidence for signal. The result is consistent with a downward fluctuation by 1.1 statistical standard deviations of the expected Standard Model background. Taking the expected background, the number of observed events and the expected statistical and systematic errors into account yields 2.7 x 10{sup -3} as the upper limit for B{sup 0} {yields} {tau}{sup +}{tau}{sup -} at the 90% confidence level.
![Download A Search for the Rare Decay B0 2![gamma][gamma]. PDF Online Free](https://books.google.com/books/content/images/frontcover/QIFPAQAACAAJ?fife=w200-h370)
![Download A Search for the Rare Decay B -] Pi Ll− PDF Online Free](https://books.google.com/books/content/images/frontcover/Ym1ZAQAACAAJ?fife=w200-h370)
![Download A Search for the Rare Decay [B Meson to Two Photons] PDF Online Free](https://books.google.com/books/content/images/frontcover/Wz2qAQAACAAJ?fife=w200-h370)
![Download Search for the Rare Decay B0 - J/[psi]/[gamma] in the BABAR Experiment PDF Online Free](https://books.google.com/books/content/images/frontcover/Lo0xQwAACAAJ?fife=w200-h370)
![Download A Search for the Rare Decay B[sup 0] to D[sub S][sup +] Rho[sup -]. PDF Online Free](https://books.google.com/books/content/images/frontcover/U-wJkAEACAAJ?fife=w200-h370)
![Download Search for the Rare Decay B0bar -] D*0 Gamma PDF Online Free](https://books.google.com/books/content/images/frontcover/Ez24AQAACAAJ?fife=w200-h370)
![Download A Search for the Rare Decay [mu]+ --> E+[gamma][gamma] PDF Online Free](https://books.google.com/books/content/images/frontcover/3xYeHAAACAAJ?fife=w200-h370)
![Download A Search for the Rare Decay B-]tau+tau- at the BaBar Experiment PDF Online Free](https://books.google.com/books/content/images/frontcover/LcfQjwEACAAJ?fife=w200-h370)
