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Measurement Of The Relative Branching Fractions For B To D D Ddpi Ell Barnu Ell With A Large Sample Of Tagged B Mesons
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Book Synopsis Measurement of the Relative Branching Fractions for B^- to D/D^{*}/D^{**}(D^{(*)}\pi) \ell^- \bar{\nu}_{\ell} with a Large Sample of Tagged B Mesons by : B. Aubert
Download or read book Measurement of the Relative Branching Fractions for B^- to D/D^{*}/D^{**}(D^{(*)}\pi) \ell^- \bar{\nu}_{\ell} with a Large Sample of Tagged B Mesons written by B. Aubert and published by . This book was released on 2006 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a study of B semileptonic decays into charm final states based on 211.7 fb{sup -1} of data collected at the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II e{sup +}e{sup -} storage ring. Using a novel technique based on the simultaneous fit of a set of variables reconstructed on the recoil of a B tagged in an hadronic decay mode, we measure the relative branching fractions {Lambda}(B{sup -} {yields} D{sup 0}{ell}{sup -}{bar {nu}}{sub {ell}}) = 0.611 {+-} 0.022 (stat.) {+-} 0.027 (syst.) and {Lambda}(B{sup -} {yields} D**{sup 0})(D{sup (*)}{pi}){ell}{sup -}{bar {nu}}{sub {ell}}/{Lambda}(B{sup -} {yields} DX{ell}{sup -}{bar {nu}}{sub {ell}}) = 0.173 {+-} 0.017 (stat.) {+-} 0.021 (syst.).
Book Synopsis Measurement of the Relative Branching Fractions of Bbar to D/D*/D** L- Nubar_l Decays in Events with a Fully Reconstructed B Meson by :
Download or read book Measurement of the Relative Branching Fractions of Bbar to D/D*/D** L- Nubar_l Decays in Events with a Fully Reconstructed B Meson written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We determine the relative branching fractions of semileptonic B decays to charmed final states. The measurement is performed on the recoil from a fully reconstructed B meson in a sample of 362 million B{bar B} pairs collected at the [Upsilon](4S) resonance with the BABAR detector. A simultaneous fit to a set of discriminating variables is performed on a sample of {bar B} → DXl−{bar {nu}}{sub {ell}} decays to determine the contributions from the different channels.
Download or read book La P'tite du sixième written by and published by . This book was released on 1917 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of B to {pi, Eta, Eta'} L Nu Branching Fractions AndDetermination of by :
Download or read book Measurements of B to {pi, Eta, Eta'} L Nu Branching Fractions AndDetermination of written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of Branching Fractions, Rate Asymmetries, and Angular Distributions in the Rare Decays B -] Kl+l- and B -] K*l+ L- by : B. Aubert
Download or read book Measurements of Branching Fractions, Rate Asymmetries, and Angular Distributions in the Rare Decays B -] Kl+l- and B -] K*l+ L- written by B. Aubert and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of the flavor-changing neutral current decays B {yields} K{ell}{sup +}{ell}{sup -} and 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. The data sample comprises 229 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. Flavor-changing neutral current decays are highly suppressed in the Standard Model and their predicted properties could be significantly modified by new physics at the electroweak scale. We measure the branching fractions {Beta}(B {yields} K{ell}{sup +}{ell}{sup -}) = (0.34 {+-} 0.07 {+-} 0.02) x 10{sup -6}, {Beta}(B {yields} K*{ell}{sup +}{ell}{sup -}) = (0.78{sub -0.17}{sup +0.19} {+-} 0.11) x 10{sup -6}, the direct CP asymmetries of these decays, and the relative abundances of decays to electrons and muons. For two regions in {ell}{sup +}{ell}{sup -} mass, above and below m{sub J/{psi}}, we measure partial branching fractions and the forward-backward angular asymmetry of the lepton pair. In these same regions we also measure the K* longitudinal polarization in B {yields} K*{ell}{sup +}{ell}{sup -} decays. Upper limits are obtained for the lepton flavor-violating decays B {yields} Ke{mu} and B {yields} K*e{mu}. All measurements are consistent with Standard Model expectations.
Book Synopsis Branching Fraction for B+ -] Pi0 L+ Nu, Measured in Upsilon (4S) -] BBbar Events Tagged by B- -] D0 L- Nubar (X) Decays by : J. C. Chen
Download or read book Branching Fraction for B+ -] Pi0 L+ Nu, Measured in Upsilon (4S) -] BBbar Events Tagged by B- -] D0 L- Nubar (X) Decays written by J. C. Chen and published by . This book was released on 2005 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report a preliminary branching fraction of (1.80 {+-} 0.37{sub stat.} {+-} 0.23{sub syst.}) x 10{sup -4} for the charmless exclusive semileptonic B{sup +} {yields} {pi}{sup 0}{ell}{sup +}{nu} decay, where {ell} can be either a muon or an electron. This result is based on data corresponding to an integrated luminosity of 81 fb{sup -1} collected at the {Upsilon}(4S) resonance with the BABAR detector. The analysis uses B{bar B} events that are tagged by a B meson reconstructed in the semileptonic B{sup -} {yields} D{sup 0}{ell}{sup -}{bar {nu}}(X) decays, where X can be either a {gamma} or a {pi}{sup 0} from a D* decay.
Book Synopsis Measurement of the B to Pi L Nu Branching Fraction and Determination of by :
Download or read book Measurement of the B to Pi L Nu Branching Fraction and Determination of written by and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report a measurement of the B →?l? branching fraction based on 211 fb−1 of data collected with the BABAR detector. We use samples of B° and B mesons tagged by a second B meson reconstructed in a semileptonic or hadronic decay, and combine the results assuming isospin symmetry to obtain?(B° →?−l+?) = (1.33 ± 0.17{sub stat} ± 0.11{sub syst}) x 10−4. We determine the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element.
Book Synopsis Determination of the Branching Fraction for B Rightarrow X[sub C] Ell Nu Decays and of [verticalV[sub Cb][vertical from Hadronic-Mass and Lepton-Energy Moments by :
Download or read book Determination of the Branching Fraction for B Rightarrow X[sub C] Ell Nu Decays and of [verticalV[sub Cb][vertical from Hadronic-Mass and Lepton-Energy Moments written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We determine the inclusive B [yields] X[sub c][ell][nu] branching fraction, [Beta][sub c[ell][nu]], the CKM matrix element V[sub cb], and other heavy-quark parameters from a simultaneous fit to moments of the hadronic-mass and lepton-energy distributions in semileptonic B-meson decays, measured as a function of the lower limit on the lepton energy, using data recorded with the BABAR detector. Using Heavy Quark Expansions (HQEs) to order 1/m[sub b][sup 3], we extract [Beta][sub ce[nu]] = (10.61 [+-] 0.16[sub exp] [+-] 0.06[sub HQE])% and V[sub cb] = (41.4 [+-] 0.4[sub exp] [+-] 0.4[sub HQE] [+-] 0.6[sub th]) x 10[sup -3]. The stated errors refer to the experimental, HQE, and additional theoretical uncertainties.
Download or read book Médée-Matériau written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis MEASUREMENT OF THE BRANCHING FRACTIONS FOR INCLUSIVE B[sup -] AND [bar B][sup 0] DECAYS TO FLAVOR-TAGGED D, D[sub S] AND LAMBDA[sub C]. by :
Download or read book MEASUREMENT OF THE BRANCHING FRACTIONS FOR INCLUSIVE B[sup -] AND [bar B][sup 0] DECAYS TO FLAVOR-TAGGED D, D[sub S] AND LAMBDA[sub C]. 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 the inclusive branching fractions of B[sup -] and of [bar B][sup 0] mesons decaying to D[sup 0]X, [bar D][sup 0]X, D[sup +]X, D[sup -]X, D[sub s][sup +]X, D[sub s][sup -]X, [Lambda][sub c][sup +]X, [bar [Lambda]][sub c][sup -]X, based on a sample of 88.9 million B[bar B] events recorded with the BABAR detector at the [Upsilon](4S) resonance. Events are selected by completely reconstructing one B and searching for a reconstructed charmed particle in the rest of the event. The authors measure the number of charmed and of anit-charmed particles per B decay and derive the total charm yield per B[sup -] decay, n[sub c][sup -] = 1.313 [+-] 0.037 [+-] 0.037 [+-] 0.062[sub -0.043][sup +0.063], and per [bar B][sup 0] decay, n[sub c][sup 0] = 1.276 [+-] 0.062 [+-] 0.058[sub -0.046][sup +0.066] where the first uncertainty is statistical, the second is systematic, and the third reflects the charm branching-fraction uncertainties.
Book Synopsis MEASUREMENT OF THE BRANCHING FRACTIONS FOR INCLUSIVE B− AND {bar B}° DECAYS TO FLAVOR-TAGGED D, D{sub S} AND LAMBDA{sub C} by :
Download or read book MEASUREMENT OF THE BRANCHING FRACTIONS FOR INCLUSIVE B− AND {bar B}° DECAYS TO FLAVOR-TAGGED D, D{sub S} AND LAMBDA{sub C} written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report on the inclusive branching fractions of B− and of {bar B}° mesons decaying to D°X, {bar D}°X, DX, D−X, D{sub s}+X, D{sub s}−X,?{sub c}+X, {bar {Lambda}}{sub c}−X, based on a sample of 88.9 million B{bar B} events recorded with the BABAR detector at the?(4S) resonance. Events are selected by completely reconstructing one B and searching for a reconstructed charmed particle in the rest of the event. The authors measure the number of charmed and of anit-charmed particles per B decay and derive the total charm yield per B− decay, n{sub c}− = 1.313 ± 0.037 ± 0.037 ± 0.062{sub -0.043}{sup +0.063}, and per {bar B}° decay, n{sub c}° = 1.276 ± 0.062 ± 0.058{sub -0.046}{sup +0.066} where the first uncertainty is statistical, the second is systematic, and the third reflects the charm branching-fraction uncertainties.
Book Synopsis Measurement of B --] Xsl+l- Branching Fraction with a Sum Over Exclusive Modes by :
Download or read book Measurement of B --] Xsl+l- Branching Fraction with a Sum Over Exclusive Modes written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We measure the branching fraction for the flavor-changing neutral-current process B [yields] X[sub s][ell][sup +][ell][sup -] with a sample of 89 x 10[sup 6] [Upsilon](4S) [yields] B[bar B] events recorded with the BABAR detector at the PEP-II e[sup +]e[sup -] storage ring. The final state is reconstructed from e[sup +]e[sup -] or [mu][sup +][mu][sup -] pairs and a hadronic system X[sub s] consisting of one K[sup [+-]] or K[sub s][sup 0] and up to two pions, with at most one [pi][sup 0]. We observe a signal of 40 [+-] 10(stat) [+-] 2(syst) events and extract the inclusive branching fraction [Beta] (B [yields] X[sub s][ell][sup +][ell][sup -]) = (5.6 [+-] 1.5(stat) [+-] 0.6(exp syst) [+-] 1.1(model syst)) x 10[sup -6] for m[sub [ell][sup +][ell][sup -]]> 0.2 GeV/c[sup 2].
Book Synopsis Measurement of Branching Fractions for Exclusive B Decays to Charmonium Final States by :
Download or read book Measurement of Branching Fractions for Exclusive B Decays to Charmonium Final States written by and published by . This book was released on 2002 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report branching fraction measurements for exclusive decays of charged and neutral B mesons into two-body final states containing a charmonium meson. We use a sample of 22.72 ± 0.36 million B{bar B} events collected between October 1999 and October 2000 with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. The charmonium mesons considered here are J/[psi], [psi](2S), [chi]{sub c1}, and the light meson in the decay is either a K, K*, or [pi]°.
Book Synopsis Measurement of the Branching Fractions for B+ --] K*[sup 0]pi[sup +]. by :
Download or read book Measurement of the Branching Fractions for B+ --] K*[sup 0]pi[sup +]. written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a preliminary result of the branching fraction for the B meson decay to the final state K[sup +][pi][sup -][pi][sup +] via an intermediate K*[sup 0] resonance using the sample of approximately 23 million B[bar B] mesons produced at the [Upsilon](4S) resonance with the BABAR detector at the PEP II e[sup +]e[sup -] collider. The K*[sup 0] was detected through the decay to the final state K[sup +][pi][sup -]. The result of this analysis is [Beta](B[sup +] [yields] K*[sup 0][pi][sup +]) = (15.5 [+-] 3.4 [+-] 1.8) x 10[sup -6] where the first error is statistical and the second is systematic.
Book Synopsis Improved Measurements of Branching Fractions for B0 -] Pi+pi-, K+pi-, and Search for B0 -] K+K- by : J. C. Chen
Download or read book Improved Measurements of Branching Fractions for B0 -] Pi+pi-, K+pi-, and Search for B0 -] K+K- written by J. C. Chen and published by . This book was released on 2005 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present preliminary measurements of branching fractions for the charmless two-body decays B{sup 0} {yields} {pi}{sup +}{pi}{sup -} and K{sup +}{pi}{sup -}, and a search for B{sup 0} {yields} K{sup +}K{sup -} using a data sample of approximately 227 million B{bar B} decays. Signal yields are extracted with a multi-dimensional maximum likelihood fit, and the efficiency is corrected for the effects of final-state radiation. We find the charge-averaged branching fractions (in units of 10{sup -6}): {Beta}(B{sup 0} {yields} {pi}{sup +}{pi}{sup -}) = 5.5 {+-} 0.4 {+-} 0.3; {Beta}(B{sup 0} {yields} K{sup +}{pi}{sup -}) = 19.2 {+-} 0.6 {+-} 0.6; and {Beta}(B{sup 0} {yields} K{sup +}K{sup -}) =
Book Synopsis Measurement of the Ratios of the Branching Fractions [Beta](B0[sigma] --> D−[sigma][pi]+ [pi]+[pi]−)/[Beta](B0 --> D−[pi]+ [pi]+[pi]−) and [Beta](B0[sigma] --> D−[sigma][pi]+)/[Beta](B0 --> D−[pi]+ [pi]+[pi]−) with the CDF Detector by : Arkadiy Bolshov
Download or read book Measurement of the Ratios of the Branching Fractions [Beta](B0[sigma] --> D−[sigma][pi]+ [pi]+[pi]−)/[Beta](B0 --> D−[pi]+ [pi]+[pi]−) and [Beta](B0[sigma] --> D−[sigma][pi]+)/[Beta](B0 --> D−[pi]+ [pi]+[pi]−) with the CDF Detector written by Arkadiy Bolshov and published by . This book was released on 2007 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the measurement of the ratios of branching fractions B... to B..., and B... to B... We analyze data taken with the CDF II detector that corresponds to an integrated luminosity of 355 pb - 1 in pp collisions at ... TeV at the Fermilab Tevatron. Using a novel displaced track trigger we reconstruct 494 ± 28 B... decays, 8098 ± 114 B... decays, 159 ± 17 B... decays, and 3288 ± 76 B... decays. Using the world average value of the ... production ratio fs/fd = 0.259 ± 0.038, we determine the ratios of branching fractions ... where the uncertainties labeled BR and PR refer to the uncertainty on the D meson branching fractions and the production ratio fs/fd, respectively.
Book Synopsis The Complete Commodore Inner Space Anthology by : Hildon, Karl J. H
Download or read book The Complete Commodore Inner Space Anthology written by Hildon, Karl J. H and published by Milton, Ont. : Transactor Pub.. This book was released on 1985 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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/[Beta](B0 --> D−[pi]+ [pi]+[pi]−) and [Beta](B0[sigma] --> D−[sigma][pi]+)/[Beta](B0 --> D−[pi]+ [pi]+[pi]−) with the CDF Detector PDF Online Free](https://books.google.com/books/content/images/frontcover/2ESJtgAACAAJ?fife=w200-h370)
