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.

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:

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:

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 Government Reports Annual Index written by and published by . This book was released on 1991 with total page 1656 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mu Sup Yields E Sup Gamma and Related Rare Decays written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The connection of rare decays to supersymmetric grand unification is highlighted, and a brief review of the status of rare decay experiments is given. The status of the MEGA experiment, a search for [mu][sup +] [yields] e[sup +][gamma], is reported. Some ideas for a new experimental arrangement that has the potential to reach a sensitivity of 10[sup [minus]14] are presented.

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:

Download or read book Evidence for the Rare Decay B yields K ell sup ell sup Land Measurement of the B yields K ell sup ell sup Branching Fraction written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present evidence for the flavor-changing neutral current decay B[yields] K*[ell][sup+][ell][sup -] and a measurement of the branching fraction for the related process B[yields] K[ell][sup+][ell][sup -], where[ell][sup+][ell][sup -] is either an e[sup+]e[sup -] or[mu][sup+][mu][sup -] pair. These decays are highly suppressed in the Standard Model, and they are sensitive to contributions from new particles in the intermediate state. The data sample comprises 123 x 10[sup 6][Upsilon](4S)[yields] B[bar B] decays collected with the BABAR detector at the PEP-II e[sup+]e[sup -] storage ring. Averaging over K* isospin and lepton flavor, we obtain the branching fractions[Beta](B[yields] K[ell][sup+][ell][sup -])= (0.65[sub -0.13][sup+0.14][+-] 0.04) x 10[sup -6][Beta](B[yields] K*[ell][sup+][ell][sup -])= (0.88[sub -0.29][sup+0.33][+-] 0.10) x 10[sup -6], where the uncertainties are statistical and systematic, respectively. The significance of the B[yields] K[ell][sup+][ell][sup -] signal is over 8[sigma], while for B[yields] K*[ell][sup+][ell][sup -] it is 3.3[sigma].

Download or read book Physics Briefs written by and published by . This book was released on 1989 with total page 1272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1977 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nachtr gliche Verst rkung von Stahlbeton und Spannbetonquerschnitten written by and published by . This book was released on 1981 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 1030 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 1977 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Search for Rare Decays of the K written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on a search for the rare decays K/sub L/° .-->. .mu./sup +-/e/sup /minus plus//, K/sub L/° .-->. ee/sup /minus//, and K/sub L/° .-->. .pi.°ee/sup /minus// at the Brookhaven AGS. Limits obtained for these processes are BR(K/sub L/° .-->. .mu./sup +-/e/sup /minus plus//) 1.9 x 10/sup /minus/9/, BR(K/sub L/° .--. e+e/sup /minus//) 1.2 x 10/sup /minus/9/, and BR(K/sub L/° .--. .pi.°e+e/sup /minus//)

Download or read book Histoire de derniere Guerre commenc e l an 1756 et finie par la Paix d Hubertsbourg le 15 Fevrier 1763 written by and published by . This book was released on 1768 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Search for the Decay K Sub L Sup 0 Yields Pi Sup 0 E Sup E Sup Minus written by and published by . This book was released on 1990 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented of a recent search by AGS Experiment 845 for the CP violating decay K{sub L}° →?°ee−. The 90% C.L. limit B(K{sub L}° →?°e+e−)