Download or read book Search for Charmless Hadronic Decays of B Mesons with the SLD Detector written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a sample of approximately 500,000 hadronic Z° decays accumulated between 1993 and 1998, the SLD experiment has set limits on 24 fully charged two-body and quasi two-body exclusive charmless hadronic decays of B, B°, and B{sub s}° mesons. The precise tracking capabilities of the SLD detector provided for the efficient reduction of combinatoric backgrounds, yielding the most precise available limits for ten of these modes.
Download or read book Hadronic Charmless B Decays at the SLD written by Per Lasse Reinertsen and published by . This book was released on 1999 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hadronic Charmless B Decays at the SLD written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Rare decays of beauty particles were studied in several two-body exclusive hadronic charmless modes using the 19.4 pb-1 Z-pole data collected with the SLD detector at SLAC from 1993 to 1998. These decays are mediated by both tree level b 2!u and one-loop penguin b 2!s, d transitions. Upper limits for the branching ratios are set for the investigated modes Bs, B0 2!P+P-, B+ 2!V P+ and Bs, B0 2!V V, where the pseudoscalar particle P+ is either?+ or K+ and the vector particle V is either?0, K* 0 or?. Using an event selection algorithm consisting of a set of hard cuts combined with a set of discriminator functions, the efficiencies range between 24% and 37% with near zero background.
Download or read book Charmless Hadronic B Decays at BaBar written by and published by . This book was released on 2000 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present preliminary results of several searches for rare charmless hadronic decays of the B meson using data collected by the BABAR detector at the Stanford Linear Accelerator Center's PEP-II storage ring. We search for the decays hh−, h+h−h+, h+h−?°, X°h+, and X°K{sub S}°, where h =? or K, and X° =?' or?. In a sample of 8.8 million B{bar B} decays they measure the branching fractions. They calculate upper limits for the modes without a significant signal.
Download or read book High Energy Physics 99 Proceedings of the International Europhysics Conference on High Energy Physics Tampere Finland 15 21 July 1999 written by K Huitu and published by CRC Press. This book was released on 2000-01-01 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Energy Physics 99 contains the 18 invited plenary presentations and 250 contributions to parallel sessions presented at the International Europhysics Conference on High Energy Physics. The book provides a comprehensive survey of the latest developments in high energy physics. Topics discussed include hard high energy, structure functions, soft interactions, heavy flavor, the standard model, hadron spectroscopy, neutrino masses, particle astrophysics, field theory, and detector development.
Download or read book Search for Rare B meson Decays with a Charmless Hadronic State Recoiling Against K meson at the PEP II Asymmetric B meson Factory written by Gennadiy Anatolyevich Kukartsev and published by . This book was released on 2007 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document presents results of the search for B + → etaXK+ in which etaX → etapi+pi - or etaX → K0S K+pi-, and etaX is a potentially exotic state with a resonant mass within (1.2-1.8) GeV. We use the BABAR data of 382.9 million BB pairs and report the first observation of B+ → eta(1295) K+ and B+ → eta(1475)K+, and set upper limits for the modes listed below. We also consider an alternative signal model in the etaX → K0S K+/-pi∓ mode with an extra resonance, to better describe the meson mass spectrum. We provide the central values where possible. Hermitian conjugation is implied throughout the document unless stated otherwise. BB+/- →h1295 K+/- xBh 1295→h pp=2.93+0.77+0.22 -0.73-0.21 ˙10-6, BB+/- →h1475 K+/- xBh 1475→ KK&d1;p =13.79+1.83+1.00-1.65-0.56 ˙10-6. The following upper limits assume 90% C.L: BB+/- →f11285 K+/-xB f11285 →hpp
Download or read book Study of the Rare Charmless Hadronic B Meson Decays B zero to Phi K zero and B zero to K star plus Pi minus written by and published by . This book was released on 2004 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the analyses of the rare charmless hadronic B meson decays B° 2!?K° and B° 2!K*?−, using 20.58 fb−1 of e+e− data taken at the?(4S) resonance. The data were taken with the BABAR detector during its first run at the PEP-II asymmetric e+e− collider. Measurements of these modes using a counting technique are presented with the branching fractions?(B° 2!?K°) = (9.3 ± 3.4(stat.) ± 1.1(syst.)) x 10−6 with a significance of 4.9?, and?(B° 2!K*+?−) = (20.8 ± 9.3(stat.) ± 2.1(syst.)) x 10−6 with a significance of 3.0?. For the latter, an upper limit of?(B° 2!K*+?−)
Download or read book Direct CP Violatio in Charmless Hadronic B meson Decays at the PEP II Asymmetric B meson Factory written by Alexandre Valerievich Telnov and published by . This book was released on 2003 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of the Rare Charmless Hadronic B Meson Decays written by Ali Anjomshoaa and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Charmless Hadronic B Decays Branching Fractions at BaBar written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present preliminary measurements of the branching fractions for charmless hadronic decays of B mesons into two-body final states with kaons, pions and a[phi] resonance. The measurements are based on a data sample of approximately 23 million B[bar B] pairs collected by the BaBar detector at the PEP-II asymmetric B Factory at SLAC.
Download or read book Eps High Energy Physics 95 Proceedings Of The International Europhysics Conference written by Catherine Vander Velde and published by World Scientific. This book was released on 1996-05-28 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Rare Charmless Hadronic B Decay B u2192 A0 0 Using the BaBar Detector written by and published by . This book was released on 2007 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: An upper limit has been extracted, at the 90% C.L, for the rare charmless hadronic B meson decay B ± → a0(980)±?0, where a0(980)± →??± and ?????????? or ???????? ?+?-?0. The analysis was based on a sample of approximately 340.7 fb-1 of data taken at the (4S) resonance with the BABAR detector at the PEP-II e+e- collider at SLAC from May 1999 to August 2006. The sample contains (379.9 ± 4.2) million B$ar{B}$ pairs.
Download or read book A Study of the Rare Charmless Hadronic B Decay B 2 a0 pi 0 Using the BaBar Detector written by and published by . This book was released on 2007 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: An upper limit has been extracted, at the 90% C.L, for the rare charmless hadronic B meson decay B ± → a0(980)±[pi]0, where a0(980)± →[eta][pi]± and [eta]→[gamma][gamma] or [eta]→ [pi]+[pi]-[pi]0. The analysis was based on a sample of approximately 340.7 fb-1 of data taken at the (4S) resonance with the BABAR detector at the PEP-II e+e- collider at SLAC from May 1999 to August 2006. The sample contains (379.9 ± 4.2) million B$\bar{B}$ pairs.
Download or read book Reporting on the Lifetime of Charmless B s Meson Decay to K K written by M. Donega and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors use data collected by the displaced track trigger of the CDF Run II detector at TeVatron to measure the B mesons lifetime in the hadronic decays: B{sub u} {yields} D{sup 0}{pi}, B{sub d} {yields} D{sup {-+}}{pi}{sup {+-}}, B{sub d} {yields} D{sup {-+}}3{pi}, B{sub s} {yields} D{sub s}{sup {-+}}{pi}{sup {+-}}, B{sub s} {yields} D{sub s}{sup {-+}}3{pi}. Recent developments in the measurement of the lifetime of the charmless B{sub s} {yields} K{sup +}k{sup -} mode is presented.
Download or read book Rates Polarizations and Asymmetries in Charmless Vector Vector B Meson Decays written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With a sample of approximately 89 million BB pairs collected with the BABAR detector, we perform a search for B meson decays into pairs of charmless vector mesons ([phi], [rho], and K*). We measure the branching fractions, determine the degree of longitudinal polarization, and search for CP violation asymmetries in the processes B[sup+][yields][phi]K*[sup+], B[sup 0][yields][phi]K*[sup 0], B[sup+][yields][rho][sup 0]K*[sup+], and B[sup+][yields][rho][sup 0][rho][sup+]. We also set an upper limit on the branching fraction for the decay B[sup 0][yields][rho][sup 0][rho][sup 0].
Download or read book The Science Reports of the T hoku University written by and published by . This book was released on 2001 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes Annual reports for the Physics and Astronomy Departments.
