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Limit On The Rare Decay B Ksup Plus Minus
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Book Synopsis Limit on the Rare Decay B [yields] [mu][sup +][mu][sup [minus] K[sup [plus-minus]. by :
Download or read book Limit on the Rare Decay B [yields] [mu][sup +][mu][sup [minus] K[sup [plus-minus]. written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on a search for flavor-changing neutral current decays of B mesons into [mu][mu]K[sup [plus-minus]] using data obtained in the Collider Detector at Fermilab (CDF) 1992--1993 data taking run. To reduce the amount of background in our data we use precise tracking information from the CDF silicon vertex detector to pinpoint the location of the decay vertex of the B candidate, and accept only events which have a large decay time. We compare this data to a B meson signal obtained in a similar fashion, but where the muon pears originate from [psi] decays, and calculate the relative branching ratios. In absence of any indication of flavor-changing neutral current decay we set an upper limit on the branching ratio of 3.2 [times] 10[sup [minus]1], which is consistent with Standard Model expectations but leaves little room for non-standard physics.
Book Synopsis Limit on the Rare Decay B-> [mu]sup +[mu]sup-K+_ by :
Download or read book Limit on the Rare Decay B-> [mu]sup +[mu]sup-K+_ written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Limit on the Rare Decay B →??− K{sup {plus_minus}} by :
Download or read book Limit on the Rare Decay B →??− K{sup {plus_minus}} written by and published by . This book was released on 1994 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on a search for flavor-changing neutral current decays of B mesons into??K{sup {plus_minus}} using data obtained in the Collider Detector at Fermilab (CDF) 1992--1993 data taking run. To reduce the amount of background in our data we use precise tracking information from the CDF silicon vertex detector to pinpoint the location of the decay vertex of the B candidate, and accept only events which have a large decay time. We compare this data to a B meson signal obtained in a similar fashion, but where the muon pears originate from? decays, and calculate the relative branching ratios. In absence of any indication of flavor-changing neutral current decay we set an upper limit on the branching ratio of 3.2 × 10−1, which is consistent with Standard Model expectations but leaves little room for non-standard physics.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Limits on Rare B Decays B[yields][mu][sup+][mu][sup[minus]K[sup[+-] and B[yields][mu][sup+][mu][sup[minus]]K*[sup 0]. by :
Download or read book Limits on Rare B Decays B[yields][mu][sup+][mu][sup[minus]K[sup[+-] and B[yields][mu][sup+][mu][sup[minus]]K*[sup 0]. written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report on a search for flavor-changing neutral current decays of B mesons B[yields][mu][sup+][mu][sup[minus]]K[sup[+-]] and B[yields][mu][sup+][mu][sup[minus]]K*[sup 0] using data obtained in the Collider Detector at Fermilab (CDF) 1992--1993 data taking run. To reduce the amount of background in the data the authors use precise tracking information from the CDF silicon vertex detector to pinpoint the location of the decay vertex of the B candidate, and accept only events which have a large decay time. They compare this data to a B meson signal obtained in a similar fashion, but where the muon pairs originate from[psi] decays, and calculate the relative branching ratios. In absence of any indication of flavor-changing neutral current decays they set an upper limits of BR(B[yields][mu][sup+][mu][sup[minus]]K[sup[+-]])
Book Synopsis A New Expected Upper Limit on the Rare Decay B(s) ---] Mu+ Mu- with the D0 Experiment by :
Download or read book A New Expected Upper Limit on the Rare Decay B(s) ---] Mu+ Mu- with the D0 Experiment written by and published by . This book was released on 2009 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a new expected upper limit of the rare decay branching ratio B{sub s} →??− using about 5 fb−1 of Run II data collected with the D0 detector at the Tevatron. When setting limits on the branching ratio, selected events are normalized to reconstructed B{sup {+-}} → J/?K{sup {+-}} events in order to decrease the systematic uncertainty. The resulting expected upper limit is?(B{sub s} →?+?−) = 4.3(5.3) x 10−8 at the 90% (95%) C.L.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of the Rare Decay B --> Xs L L− at BaBar by : Ventzislav B. Koptchev
Download or read book Study of the Rare Decay B --> Xs L L− at BaBar written by Ventzislav B. Koptchev and published by . This book was released on 2004 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Limits on Rare $B$ Decays $B \to \mu{̂+} \mu{̂-} K\̂pm$ and $B \to \mu{̂+} \mu{̂-} K{̂*}$ by :
Download or read book Limits on Rare $B$ Decays $B \to \mu{̂+} \mu{̂-} K\̂pm$ and $B \to \mu{̂+} \mu{̂-} K{̂*}$ written by and published by . This book was released on 1994 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exclusive rare B-decays in the heavy quark limit by : Ahmed Ali
Download or read book Exclusive rare B-decays in the heavy quark limit written by Ahmed Ali and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Limits on Rare B Decays B Yields Musup +musup MinusKsup +- and B Yields Musup +musup MinusK*sup 0 by :
Download or read book Limits on Rare B Decays B Yields Musup +musup MinusKsup +- and B Yields Musup +musup MinusK*sup 0 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Rare decay B->K*[gamma] [BK] in the standard model by : Cesáreo A. Dominguez
Download or read book Rare decay B->K*[gamma] [BK] in the standard model written by Cesáreo A. Dominguez and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for the Rare Decay B -] K Nu Nubar by :
Download or read book Search for the Rare Decay B -] K Nu Nubar written by and published by . This book was released on 2010 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a search for the rare decays B → K+?{bar?} and B° → K°?{bar?} using 459 million B{bar B} pairs collected with the BABAR detector at the SLAC National Accelerator Laboratory. Flavor-changing neutral-current decays such as these are forbidden at tree level but can occur through one-loop diagrams in the Standard Model (SM), with possible contributions from new physics at the same order. The presence of two neutrinos in the final state makes identification of signal events challenging, so reconstruction in the semileptonic decay channels B → D{sup (*)}l? of the B meson recoiling from the signal B is used to suppress backgrounds. We set an upper limit at the 90% confidence level of 1.3 x 10−5 on the total branching fraction for B+ → K+?{bar {nu}}, and 5.6 x 10−5 for B° → K°{nu}{bar {nu}}. We additionally report partial branching fractions in two ranges of di-neutrino mass squared for B+ → K+{nu}{bar {nu}}.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for the Rare Decay Ksup + Yields Pisup + Nubar Nu by : D. S. Akerib
Download or read book A Search for the Rare Decay Ksup + Yields Pisup + Nubar Nu written by D. S. Akerib and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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