The Endpoint Region of the Electron Spectrum in Inclusive Semileptonic Heavy-quark Decay PDF Download
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Category :
Languages : en
Pages : 37
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Author:
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Category :
Languages : en
Pages : 37
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Category :
Languages : en
Pages : 2782
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I examine the relationship between the inclusive and sum-over-exclusive-resonances pictures for the electron spectrum of semileptonic heavy quark decay. The analysis shown to that obtained from a free-quark-decay-type model with an endpoint adjusted to the physical endpoint. This conclusion removes the need for nonresonant contributions in the endpoint region and is consistent with arguments that free-quark-decay-type models are, in principle.
Author: Aneesh V. Manohar
Publisher: Cambridge University Press
ISBN: 1009402145
Category : Science
Languages : en
Pages : 205
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Author: Jean Thanh Vân Trâǹ
Publisher: Atlantica Séguier Frontières
ISBN: 9782863322444
Category :
Languages : en
Pages : 548
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Author: D. I. Britton
Publisher: Atlantica Séguier Frontières
ISBN: 9782863321553
Category : Heavy particles (Nuclear physics)
Languages : en
Pages : 732
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Author:
Publisher:
ISBN:
Category : Particles (Nuclear physics)
Languages : en
Pages : 632
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![Preliminary Measurement of the Inclusive Electron Spectrum in Charmless Semileptonic B Decays Near the Kinematic Endpoint and Determination of [verticalV[sub Ub][vertical PDF](https://books.google.com/books/content/images/frontcover/BhkJkAEACAAJ?fife=w80-h100)
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Category :
Languages : en
Pages :
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The authors study the inclusive electron spectrum of B --> X[sub u]e[nu] decays near the kinematic limit for B --> X[sub c]e[nu] transitions using a sample of 88 million [Upsilon](4S) decays recorded by the BABAR detector at the PEP II e[sup +]e[sup -] storage rings. For the electron momentum interval of 2.0-2.6GeV/c the partial branching fraction is measured to be [Delta]B(B --> X[sub u]e[nu]) = (0.480 [+-] 0.029(stat) [+-] 0.053(syst) x 10[sup -3]). Combining this result on [Delta]B with measurements of the inclusive photon spectrum in B --> X[sub s][gamma] transition the authors find V[sub ub] = 3.94 [+-] 0.25exp [+-] 0.37 f[sub u] [+-] 0.19 theory x 10[sup -3], where the first error represents the combined statistical and systematic experimental uncertainty of the partial branching fraction measurement, the second refers to the uncertainty of the determination of the fraction f[sub u] of the inclusive electron spectrum that falls within the cuts, and the third error is due to theoretical uncertainties in the QCD corrections, plus the uncertainty in the b-quark mass. All results are preliminary.
Author: Juliet Lee-Franzini
Publisher: World Scientific
ISBN: 9789810248802
Category : Science
Languages : en
Pages : 672
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This important book covers topics that are of major interest to the high energy physics community, including the most recent results from flavour factories, dark matter and neutrino physics. In addition, it considers future high energy machines.
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Category : Particles (Nuclear physics)
Languages : en
Pages : 534
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Author: S. Narison
Publisher:
ISBN:
Category : Quantum chromodynamics
Languages : en
Pages : 538
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