Determination Of The Branching Fraction For B Rightarrow Xsub C Ell Nu Decays And Of Verticalvsub Cbvertical From Hadronic Mass And Lepton Energy Moments PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Determination Of The Branching Fraction For B Rightarrow Xsub C Ell Nu Decays And Of Verticalvsub Cbvertical From Hadronic Mass And Lepton Energy Moments PDF full book. Access full book title Determination Of The Branching Fraction For B Rightarrow Xsub C Ell Nu Decays And Of Verticalvsub Cbvertical From Hadronic Mass And Lepton Energy Moments.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2004 |
| Genre | : |
| ISBN | : |
Download 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 Book in PDF, ePub and Kindle
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.
| Author | : |
| Publisher | : |
| Total Pages | : 7 |
| Release | : 2004 |
| Genre | : |
| ISBN | : |
Download Determination of the Branching Fraction for B Rightarrow X{sub C} Ell Nu Decays and of Book in PDF, ePub and Kindle
We determine the inclusive B → X{sub c}l[nu] branching fraction, [Beta]{sub c{ell}[nu]}, the CKM matrix element.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2004 |
| Genre | : |
| ISBN | : |
Download Inclusive Semileptonic B Decays at BABAR and Extraction of HQE Parameters Book in PDF, ePub and Kindle
A measurement of the first four moments of the hadronic mass distribution in B [yields] C[sub c][ell][bar [nu]] decays is presented for minimum lepton momenta varying between 0.9 and 1.6 GeV, using data recorded with the BABAR detector. Furthermore, a measurement of the inclusive electron energy spectrum for semileptonic B decays together with a measurement of its first, second and third moments for minimum electron energies between 0.6 and 1.5 GeV is reported. We determine the inclusive B [yields] X[sub c][ell][bar [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 the measured moments.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2004 |
| Genre | : |
| ISBN | : |
Download Determination of [verticalV[sub Cb][vertical and Results from BABAR. Book in PDF, ePub and Kindle
The CKM matrix element amplitude V[sub cb] was determined using the data collected by the BABAR detector. The partial branching fraction, lepton-energy moments, and hadron-mass moments were measured in inclusive semileptonic decays B [yields] X[sub c][ell][nu]. A global fit to a Heavy-Quark-Expansion calculation allowed precise determination of V[sub cb], m[sub b], m[sub c], [Beta](B [yields] X[sub c][ell][nu]) and four non-perturbative parameters.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2004 |
| Genre | : |
| ISBN | : |
Download Study of the B to Xclnu Decays and Determination of Book in PDF, ePub and Kindle
We report studies of semileptonic decays, B → X{sub c}l[nu], based on a sample of 88 million B{bar B} events recorded with the BABAR detector. We have measured four moments of the electron energy and hadronic mass distributions and determined the inclusive branching fraction, the CKM matrix element.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2003 |
| Genre | : |
| ISBN | : |
Download Measurement of the First and Second Moments of the Hadronic Mass Distribution in Semileptonic B Decays Book in PDF, ePub and Kindle
We report a preliminary measurement of the first and second moments of the hadronic mass distributions in B[yields] X[sub c][ell][nu] decays. The measurements are based on[Upsilon](4S)[yields] B[bar B] events where the hadronic decay of one of the B mesons is fully reconstructed and a charged lepton from the decay of the other B meson is identified. The moments are presented for threshold lepton momenta ranging from 0.9 to 1.6 GeV. From theM[sub X][sup 2] moments we determine the non-perturbative Heavy Quark Expansion (HQE) parameters, [bar[Lambda]] and[lambda][sub 1]. We combine the measured momentsM[sub X][sup 2] with earlier BABAR measurements of the semileptonic branching ratios and B lifetimes and perform a simultaneous fit to the HQE for the moments obtained for different threshold lepton momenta and the semileptonic decay width. This fit results in an improved value for the CKM matrix elementV[sub cb].
| Author | : Kerstin Tackmann |
| Publisher | : |
| Total Pages | : 300 |
| Release | : 2008 |
| Genre | : |
| ISBN | : |
Download Measurement of the Hadronic Mass Spectrum in B[right Arrow]X[subscript U]l[nu] Decays and Determination of the B-quark Mass at the BABAR Experiment Book in PDF, ePub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2004 |
| Genre | : |
| ISBN | : |
Download Inclusive Semileptonic B Decays at BABAR. Book in PDF, ePub and Kindle
The authors report updates on two analyses of inclusive semileptonic B decays based on a dataset of 89 million B[bar B] events recorded with the BABAR detector at the [Upsilon](4S) resonance. Events are selected by fully reconstructing the decay of one B meson and identifying a charged lepton from the decay of the other [bar B] meson. IN the first analysis, the measurement of the first and second moment of the hadronic mass distribution in Cabibbo-favored [bar B] [yields] X[sub c][ell][bar [nu]] decays allows for the determination of the nonperturbative parameters [bar [Lambda]] and [lambda][sub 1] of Heavy Quark Effective Theory (HQET) and V[sub cb]. In the second analysis, the hadronic mass distribution is used to measure the inclusive charmless semileptonic branching fraction and to determine V[sub ub].
| Author | : J. C. Chen |
| Publisher | : |
| Total Pages | : 17 |
| Release | : 2005 |
| Genre | : |
| ISBN | : |
Download Branching Fraction for B+ -] Pi0 L+ Nu, Measured in Upsilon (4S) -] BBbar Events Tagged by B- -] D0 L- Nubar (X) Decays Book in PDF, ePub and Kindle
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.
| Author | : B. Aubert |
| Publisher | : |
| Total Pages | : 20 |
| Release | : 2006 |
| Genre | : |
| ISBN | : |
Download 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 Book in PDF, ePub and Kindle
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.).
