![Determination of the CKM-matrix Element |Vub| from the Electron Energy Spectrum Measured in Inclusive B→Xueν [B→X U E Ny] Decay with the BABAR Detector PDF](https://books.google.com/books/content/images/frontcover/5gzQzQEACAAJ?fife=w80-h100)
Author: Thomas LückPublisher:
ISBN:
Category :
Languages : en
Pages : 285
Book Description
Determination of the CKM-matrix Element |Vub| from the Electron Energy Spectrum Measured in Inclusive B→Xueν [B→X U E Ny] Decay with the BABAR Detector
Determination of the CKM-matrix Element !Vub! from the Electron Energy Spectrum Measured in Inclusive B -> X U E[Ypsilon] Decay with the BABAR Detector
![Determination of the CKM-matrix Element !Vub! from the Electron Energy Spectrum Measured in Inclusive B -> X U E[Ypsilon] Decay with the BABAR Detector PDF](https://books.google.com/books/content/images/frontcover/cS3ijgEACAAJ?fife=w80-h100)
Author: Determination of the CKM Matrix Element
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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 distribution and four moments of the hadronic mass distribution, each as a function of the minimum electron energy. From these moments we determine the inclusive branching fraction, the CKM matrix element.
Measurement of the CKM Matrix Element |Vub| with B -] Rho E Ny Decays at BABAR.
![Measurement of the CKM Matrix Element |Vub| with B -] Rho E Ny Decays at BABAR. PDF](https://books.google.com/books/content/images/frontcover/dYSJAQAACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The branching fraction for B -> rho e nu decays and the CKM matrix element |Vub| is measured with semileptonic exclusive B-meson decays using approximately 55 million Upsilon(4S) -> BBbar decays collected during the years 2000 and 2001 with the BABAR detector. The result is Br(B0 -> rho- e+ nu) = (3.39 +- 0.44 +- 0.52 +- 0.60) x 10^-4, and |Vub| = (3.69 +- 0.23 +- 0.27 +0.40-0.59) x 10^-3. The quoted errors are statistical, systematic, and theoretical respectively. These are combined results obtained using five different form-factor models. Individual results are also quoted.
Measurement of the CKM Matrix Element |Vub| with B → _r(h)63eν [rho E Ny] Decays at BABAR
![Measurement of the CKM Matrix Element |Vub| with B → _r(h)63eν [rho E Ny] Decays at BABAR PDF](https://books.google.com/books/content/images/frontcover/J8zUzQEACAAJ?fife=w80-h100)
Author: Leif Hendrik WildenMeasurement of the CKM Matrix Element Vub with B --> Pev Decays at BABAR
Author: Leif Hendrik WildenDetermination of [verticalV[sub Cb][vertical and Results from BABAR.
![Determination of [verticalV[sub Cb][vertical and Results from BABAR. PDF](https://books.google.com/books/content/images/frontcover/kQWLDAEACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Measurement of the CKM Matrix Element |Vcb| with Exclusively Reconstructed Decays B→D E Ν [ny] at the BABAR Experiment
![Measurement of the CKM Matrix Element |Vcb| with Exclusively Reconstructed Decays B→D E Ν [ny] at the BABAR Experiment PDF](https://books.google.com/books/content/images/frontcover/LM7BzQEACAAJ?fife=w80-h100)
Author: Rolf Stefan DubitzkyPublisher:
ISBN:
Category :
Languages : en
Pages : 114
Book Description
Determination of [verticalV[sub Ub][vertical in Inclusive Semileptonic B Meson Decays
![Determination of [verticalV[sub Ub][vertical in Inclusive Semileptonic B Meson Decays PDF](https://books.google.com/books/content/images/frontcover/--7CjwEACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The authors present a preliminary determination of the CKM matrix element V[sub ub] based on the analysis of semileptonic B decays from a sample of 88 million [Upsilon](4S) decays collected with the BaBar detector at the e[sup +]e[sup -] storage ring. Charmless semileptonic B decays are selected using the electron energy E-e and the invariant mass q[sup 2] of the electron-neutrino pair. The neutrino meomentum is inferred from a measurement of the visible energy and momentum in the detector and knowledge of the e[sup +]e[sup -] beam momenta. The partial branching fraction is determined in a region of the q[sup 2]-E-e plane where semileptonic B decays to charm are highly suppressed. The total charmless semileptonic branching fraction is extracted using a theoretical calculation based on the heavy quark expansion. Preliminary results yield V[sub ub] = (4.57 [+-] 0.21 [+-] 0.25 [+-] 0.34 + 0.59 - 0.29 [+-] 0.22) x 10[sup -3] where the uncertainties are from statistics (data and MC), detector modeling, background modeling, the shape function, and the heavy quark operator product expansion, respectively.
Author: Svende Braun