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Book B Meson Semileptonic Form Factors Using Unquenched Lattice QCD

Download or read book B Meson Semileptonic Form Factors Using Unquenched Lattice QCD written by Emel Gulez and published by . This book was released on 2006 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: We present state-of-the-art unquenched lattice QCD results for B meson semileptonic decay, B [rightarrow] [pi]lv, form factors. We use gauge configurations prepared by the MILC collaboration, which include the effects of the sea quarks, the s quark and two very light quarks (u and d). We employ the nonrelativistic NRQCD action to simulate the heavy b quark and a highly improved staggered quark action (AsqTad) to simulate the sea and valence light quarks. To reduce the uncertainties, we perform matching of the heavy-light current with these highly improved actions through one loop. The perturbative matching accounts for the effects of mixing with dimension 4 operators that are O(1/M) and O(a). We extrapolate the form factors f+(q2) and f0(q2) to their values at the physical pion mass using chiral perturbation theory formulas. Integrating this result, we obtain [integral] [from] 16 GeV2 [to] q2_max [d[gamma]/dq2]d2 (V_ub)2 = 1.46(35) ps−1. Combining this with a preliminary average by the Heavy Flavor Averaging Group (HFAG'05) of recent branching fraction data for exclusive B semileptonic decays from the BaBar, Belle and CLEO collaborations, leads to V_ub = 4.22(30)(51) x 10−3.

Book Analysis of Semileptonic Decays of B Mesons and D Mesons

Download or read book Analysis of Semileptonic Decays of B Mesons and D Mesons written by Kenneth Arthur Bloom and published by . This book was released on 1997 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Semileptonic B Meson to D star Meson Decay

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:

Book Dispersive Approach to Semileptonic Form factors in Heavy to Light Meson Decays

Download or read book Dispersive Approach to Semileptonic Form factors in Heavy to Light Meson Decays written by and published by . This book was released on 1996 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study the semileptonic decays of heavy mesons into light pseudoscalars by making use of dispersion relations. Constraints from heavy quark symmetry, chiral symmetry and perturbative QCD are implemented into a dispersive model for the form-factors. Large deviations from B*̂-pole dominance are observed in B\to\pi\ell\nu. We discuss the model prediction for this mode and its possible impact on the extraction of.

Book Semileptonic Decays of B Mesons Into Excited Charm Mesons

Download or read book Semileptonic Decays of B Mesons Into Excited Charm Mesons written by and published by . This book was released on 1992 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: We use the heavy quark effective theory to investigate the form factors that describe the semileptonic decays of a B meson into excited daughter mesons. For an excited daughter meson with charm, a single form factor is needed at leading order, while five form factors and two dimensionful constants are needed to order 1/m(sub)c in the heavy quark expansion. For non-charmed final states, a total of four form factors are needed at leading order. For the process B ->D^(*)Xlv, four form factors are also needed at leading order.

Book Measurement of B Meson Semileptonic Decay Form Factors

Download or read book Measurement of B Meson Semileptonic Decay Form Factors written by Anders Ryd and published by . This book was released on 1996 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Semileptonic B Meson to Excited Charm Meson Decay

Download or read book Semileptonic B Meson to Excited Charm Meson Decay written by Suzanne Lorraine Jones and published by . This book was released on 1996 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book B Decays

    Book Details:
  • Author : Sheldon Stone
  • Publisher : World Scientific
  • Release : 1994
  • ISBN : 9789810218362
  • Pages : 676 pages

Download or read book B Decays written by Sheldon Stone and published by World Scientific. This book was released on 1994 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 2nd edition is an extensive update of "B Decays?. The revisions are necessary because of the extensive amount of new data and new theoretical ideas. This book reviews what is known about b-quark decays and also looks at what can be learned in the future.The importance of this research area is increasing, as evidenced by the approval of the luminosity upgrade for CESR and the asymmetric B factories at SLAC and KEK, and the possibility of experiments at hadron colliders.The key experimental observations made thus far, measurement of the lifetimes of the different B species, B0-B0 mixing, the discovery of ?Penguin? mediated decays, and the extraction of the CKM matrix elements Vub and Vcb from semileptonic decays, as well as more mundane results, are described in great detail by the experimentalists who have been closely involved with making the measurements. Theoretical progress in understanding b-quark decays using HQET and lattice gauge techniques are described by theorists who have developed and used these techniques.Synthesizing the experimental and theoretical information, several articles discuss the implications for the ?Standard Model? and how further tests can be done using measurements of CP violation in the B system.

Book Leptonic and Semileptonic Decay of B and D Mesons

Download or read book Leptonic and Semileptonic Decay of B and D Mesons written by Krishna Kingkar Pathak and published by LAP Lambert Academic Publishing. This book was released on 2014-11-18 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with an introductory idea of Leptonic and semileptonic decay of Heavy-Light mesons. It also highlight the application of a specific QCD potential model in this area of physics. Specifically, it also addresses the application of quantum mechanical perturbation method and explicitly the Dalagarno method of perturbation in this context. The necessity of modification of the model within the constraints of QCD and the model itself is explained and also improved accordingly. Out of the five chapters, the second and third chapters address the leptonic decay of B and D mesons whereas in the last two chapters, the study of semileptonic decay in terms of the universal form factor, Isgur-Wise function is well explained.

Book Exclusive Semi leptonic Decays of B Mesons

Download or read book Exclusive Semi leptonic Decays of B Mesons written by Christopher P. O'Grady and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1993 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Measurement of Hadronic Form Factors in Semileptonic B Meson Decay

Download or read book Measurement of Hadronic Form Factors in Semileptonic B Meson Decay written by J. Stephen Miller and published by . This book was released on 1998 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Measurement of Hadronic Form Factors in Semileptonic B Meson Decay  microform

Download or read book Measurement of Hadronic Form Factors in Semileptonic B Meson Decay microform written by Miller, J. Stephen and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1998 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: