Download or read book Search for the Decay of a Charged B Meson to a Charged Rho Meson and a F0 980 Meson written by Zafar Yasin and published by . This book was released on 2009 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Searches for B Meson Decays to Phiphi Phirho Phif0 980 and F0 980 f0 980 Final States written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the results of searches for B decays to charmless final states involving?, f0(980), and charged or neutral? mesons. The data sample corresponds to 384 x 106 B{bar B} pairs collected with the BABAR detector operating at the PEP-II asymmetric-energy ee− collider at SLAC. We find no significant signals and determine the following 90% confidence level upper limits on the branching fractions, including systematic uncertainties:?(B° →??)
Download or read book Search for B Meson Decays to Two Body Final States with A0 980 Mesons written by and published by . This book was released on 2004 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a search for B decays to charmless final states involving charged or neutral a0 mesons. The data sample corresponds to 89 million B{bar B} pairs collected with the BABAR detector operating at the PEP-II asymmetric-energy B Factory at SLAC. They find no significant signals and determine the following 90% C.L. upper limits: [Beta](B° 2!a0− [pi])
Download or read book Leptonic Decays of the Charged B Meson written by Luke Andrew Corwin and published by . This book was released on 2008 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: We present a search for the decay of the charged B meson into a charged lepton and a neutrino 458.9 million Upsilon(4S) decays recorded with the Babar detector at the SLAC PEP-II B-Factory. A sample of events with one reconstructed exclusive semileptonic B decay is selected, and in the recoil a search for the signal decay is performed. The tau lepton is identified in decays to an electron and two neutrinos; a muon and two neutrinos; a charged pion and a neutrino; or a charged pion, a neutral pion, and a neutrino. The analysis strategy and the statistical procedure is set up for branching fraction extraction or upper limit determination. We determine from the data set a preliminary measurement of the branching fraction a charged B decaying to a tau lepton and a neutrino = (1.8 " 0.8 " 0.1)E-4, which excludes zero at 2.4 standard deviations. We extract the B meson decay constant = 255 " 58 MeV. Combination with the hadronically tagged measurement yields (1.8 " 0.6)E-4. We also set preliminary limits on the branching fraction of charged B decaying to an electron and a neutrino at 7.7E-6 and the charged B decaying to a muon and a neutrino at 11E-6. The limits are at the 90% confidence level.
Download or read book Search for Charged B Meson Decays to a Charged Kaon Or Pion a Tau and an Electron Or Muon Using the BABAR Detector written by Gil Matias Vitug and published by . This book was released on 2011 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book A Search for the Rare Decay of a Charged B Meson Into a Charged K Meson a Neutrino and an Anti neutrino written by Joachim Harnois-Déraps and published by . This book was released on 2006 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The document describes a search for the rare decay B[bar] [right arrow] K[bar]vv̄ in a data set of about 230 millions of BB[bar] pairs recorded by the BABAR detector at the PEP-II B Factory, via the process e+e- [right arrow] [Upsilon](4S) [right arrow] BB[bar]. The method used selects events in which the B+ meson is fully reconstructed, and looks for a K[bar] in the rest of the event. This is accomplished by applying kinematical and topological restrictions that select B[bar] [right arrow] K[bar]vv̄ events with the largest possible efficiency, while rejecting a maximum amount of background events. The number of background events is estimated from data and from simulated events, while the value of the selection efficiency relies solely on the simulation of B[bar] [right arrow] K[bar]vv̄ decays in the BABAR detector. These two numbers are required in order to set an upper limit on the branching ratio. We analyze a subset of the data sample and provide an interpretation of the result." --
Download or read book A Search for B Meson Decay to a Muon a Neutrino and a Photon written by Michael G. Greene and published by . This book was released on 2006 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes a search for the rare decay B + {yields} mu+numugamma, performed at the Stanford Linear Accelerator Center. The BABAR detector is used to analyze 81.65 fb{sup -1} of data, with (88.6 {+-} 0.6) x 10{sup 6} charged B meson decays, from the PEP-II e{sup +}e{sup -} collider running at the Upsilon(4S) resonance. The background estimate for the analysis is three events, and three signal candidates are observed. An upper limit on the branching fraction is set at B (B+ {yields} mu +numugamma)
Download or read book B Meson Decays to Mega K Omega Rho Omega Omega Omega Phi and Omega F0 written by J. C. Chen and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors describe searches for B meson decays to the charmless vector-vector final states {omega}K*, {omega}p, {omega}{omega}, and {omega}{phi} with 233 x 10{sup 6} B{bar B} pairs produced in e{sup +}e{sup -} annihilation at {radical}s = 10.58 GeV. They also search for the vector-scalar B decay to {omega}f{sub 0}.
Download or read book Leptonic Decays of the Charged B Meson written by and published by . This book was released on 2008 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a search for the decay B+ 2!l+[nu] (= [tau], [mu], or e) in (458.9±5.1)×106 [Upsilon](4S) decays recorded with the BABAR detector at the SLAC PEP-II B-Factory. A sample of events with one reconstructed exclusive semi-leptonic B decay (B- 2!D0l -$\bar{v}$X) is selected, and in the recoil a search for B+ 2! +[nu]l signal is performed. The [tau] is identified in the following channels: [tau]+ 2!e+[nu]e$\bar{v}$[tau], [tau]+ 2![mu]+[nu][mu]$\bar{v}$[tau], [tau]+ 2![pi]+$\bar{v}$[tau], and [tau]+ 2![pi]+[pi]0$\bar{v}$[tau] . The analysis strategy and the statistical procedure is set up for branching fraction extraction or upper limit determination. We determine from the dataset a preliminary measurement of B(B+ 2![tau]+[nu][tau]) = (1.8 ± 0.8 ± 0.1) × 10-4, which excludes zero at 2.4[sigma], and fB = 255 ± 58 MeV. Combination with the hadronically tagged measurement yields B(B+ 2![tau]+[nu][tau]) = (1.8 ± 0.6) × 10-4. We also set preliminary limits on the branching fractions at B(B+ 2!e+[nu]e)
Download or read book Search for Semileptonic Decays in the B Meson Into the Lambda subscript C Baryon written by Tomohiko Tanabe and published by . This book was released on 2009 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semileptonic B Meson to D star Meson Decay written by Mauricio Garcia-Sciveres and published by . This book was released on 1994 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Purely Letonic Decays of the Charged B Meson written by Pablo Hopman and published by . This book was released on 2000 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Search for Neutral B Meson Decays to A0pi A0K Etarho0 and Etaf0 written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a search for B° decays to charmless final states involving an [eta] meson, a charged pion and a second charged pion or kaon. The data sample corresponds to 383 x 106 B{bar B} pairs collected with the BABAR detector operating at the PEP-II asymmetric energy B Factory at SLAC.
Download or read book Search for Doubly Cabibbo Suppressed Decays of the Charged D Meson written by Jonathan Freeman Labs and published by . This book was released on 1992 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Branching Ratio and Polarization Fraction in Neutral B Meson Decays to Negative Rho Meson Positive Kaon Resonance written by Baosen Cheng and published by . This book was released on 2005 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of B meson Decays to Final States with a Single Charm Baryon written by Stephanie A. Majewski and published by . This book was released on 2007 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
