Results 11 to 20 of about 13,224 (34)

Ward Identities, B-> \rho Form Factors and |V_ub|

, 2003
The exclusive FCNC beauty semileptonic decay B-> \rho is studied using Ward identities in a general vector meson dominance framework, predicting vector meson couplings involved.
, A. Abada ., A. Abada ., A. Ali, A. Khodjamirian, A. Khodjamirian, A. Masiero, A.P. Bakulev, A.S. Safir, A.X. El-Khadra, Amjad Hussain Shah Gilani, APE collaboration, B. Bakamjian, BABAR collaboration, BABAR collaboration, BABAR collaboration, BABAR collaboration, BELLE collaboration, BELLE collaboration, C.A. Dominguez, C.A. Dominguez, C.A. Dominguez, C.W. Bauer, CLEO collaboration, CLEO collaboration, CLEO collaboration, CLEO collaboration, D. Becirevic, D. Melikhov, D. Melikhov, D. Scora, E. Eichten, E791 collaboration, F.J. Gilman, For a review of the Heavy Quark Symmetry results for the form factors, G. Buchalla, G. Burdman, H.-M. Choi, I.L. Grach, J. Charles, J. Charles, J.D. Richman, J.G. Korner, J.G. Körner, J.M. Flynn, J.M. Flynn, J.M. Soares, J.M. Soares, J.M. Soares, JLQCD collaboration, JLQCD collaboration, L. Lellouch, L. Lellouch, M. Beneke, M. Beneke, M. Beyer, M. Kobayashi, M. Neubert, M. Wirbel, M.A. Shifman, M.J. Dugan, N. Cabibbo, N. Isgur, N. Isgur, N.B. Demchuk, P. Ball, P. Ball, P. Ball, P. Ball, P.J. O'Donnell, Particle Data Group collaboration, Particle Data Group collaboration, R.N. Faustov, Riazuddin, Riazuddin, , S. Hashimoto, S. Ryan ., S.M. Ryan, SPQcdR collaboration, T. Feldmann, T. Huang, T. Kurimoto, T. Mannel, T.M. Aliev, Thamer Abdulmohsen Al-Aithan, U. Aglietti, UKQCD collaboration, UKQCD collaboration, UKQCD collaboration, UKQCD collaboration, W.Y. Wang, W.Y. Wang, Z. Ligeti   +92 more
core   +1 more source

Semileptonic and Rare $B$-meson transitions in a QCD relativistic potential model [PDF]

, 1998
Using a QCD relativistic potential model, previously applied to the calculation of the heavy meson leptonic constants, we evaluate the form factors governing the exclusive decays $B\to\rho\ell\nu$, $B\to K^*\gamma$ and $B\to K^*\ell^+\ell^-$.
Colangelo, P., De Fazio, F., Ladisa, M., Nardulli, G., Santorelli, P., Tricarico, A.   +5 more
core   +2 more sources

QCD description of backward vector meson hard electroproduction

, 2015
We consider backward vector meson exclusive electroproduction off nucleons in the framework of collinear QCD factorization. Nucleon to vector meson transition distribution amplitudes arise as building blocks for the corresponding factorized amplitudes ...
Pire, B., Semenov-Tian-Shansky, K., Szymanowski, L.   +2 more
core   +2 more sources

Strangeness in the Nucleon: The Strange Vector Form Factors [PDF]

, 1995
We discuss two descriptions of the nucleon's strange vector form factors in the framework of vector meson dominance. The first, an updated and extended version of Jaffe's dispersion analysis, approximates the spectral functions of the form factors as a ...
Ahrens, Ashman, Ashman, Brodsky, Cheng, Cheng, Cohen, Donoghue, Ellis, Forkel, Garvey, Gasser, Genz, H. Forkel, Holzenkamp, Höhler, Ioffe, Jaffe, Jain, Kaplan, Kroll, Lepage, Liu, Mergell, Musolf, Musolf   +25 more
core   +3 more sources

Vector Meson Dominance and Rho-Omega Mixing

, 1998
The scale of a phenomenologically successful charge-symmetry-violating nucleon-nucleon interaction, that attributed to meson exchange with a $\Delta I =1$ rho-omega transition, is set by the Coleman-Glashow SU(2) breaking tadpole mechanism.
Coon, S. A., Scadron, M. D.
core   +2 more sources

Flavor content of nucleon form factors in the space- and time-like region [PDF]

, 2006
I discuss a two-component model of nucleon form factors in which the external photon couples both to an intrinsic three-quark structure and to a meson cloud via vector-meson dominance, and present a simultaneous analysis of the electromagnetic form ...
Acha, Ahrens, Aniol, Aniol, Aniol, Armstrong, Aubert, Beck, Beck, Beck, Beise, Bijker, Bijker, Bijker, Bijker, Bijker, Brodsky, Dubnička, Estermann, Frank, Friedman, Gayou, Hammer, Hofstadter, Holzwarth, Iachello, Iachello, Jaffe, Jain, Jones, Kaplan, Leinweber, Leinweber, Lepage, Lepage, Maas, Maas, Madey, McKeown, Pace, Pate, Pate, Punjabi, Roelof Bijker, Spayde, Thomas, Tomasi-Gustafsson, Tomasi-Gustafsson   +47 more
core   +2 more sources

Vector Meson Mixing and Charge Symmetry Violation

, 1996
We discuss the consistency of the traditional vector meson dominance (VMD) model for photons coupling to matter, with the vanishing of vector meson-meson and meson-photon mixing self-energies at q^2=0.
A.G. Williams, Barkov, Bauer, Beyer, Cohen, Coon, Dumbrais, Friedrich, G. Krein, Gardner, Goldman, H.B. O'Connell, Henley, Holzenkamp, Iqbal, Krein, M. Bracco, Maltman, Maltman, Miller, Miller, Miller, Miller, Mitchell, O'Connell, O'Connell, O'Connell, Piekarewicz, Sakurai, Thomas, Urech, Weber, Williams   +32 more
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Understanding $D_{sJ}(2317)$ [PDF]

, 2003
We analyze the hadronic and radiative decay modes of the recently observed $D_{sJ}(2317)$ meson, in the hypothesis that it can be identifield with the scalar $s_\ell^P={1\over 2}^+$ state of $c \bar s$ spectrum ($D_{s0}$).
Abe, Abe, Amundson, Aubert, Bardeen, Barnes, Besson, Burdman, Cahn, Casalbuoni, Casalbuoni, Casalbuoni, Cheng, Cheng, Cho, Cho, Cho, Cho, Colangelo, Colangelo, Colangelo, Colangelo, Eichten, F. De Fazio, Falk, Gasser, Godfrey, Hagiwara, Kawarabayashi, P. Colangelo, Riazuddin, Szcepaniak, van Beveren, Wise   +33 more
core   +2 more sources

Large-Nc QCD meets Regge theory: the example of spin-one two-point functions

, 2001
We discuss the phenomenological implications of assuming a Veneziano-type spectrum for the vector and axial-vector two-point functions in QCD at large Nc.
Golterman, Maarten, Peris, Santiago
core   +1 more source

Glueball enhancements in p(gamma,VV)p through vector meson dominance

, 2004
Double vector meson photoproduction, p(gamma, G -> VV)p, mediated by a scalar glueball G is investigated. Using vector meson dominance (VMD) and Regge/pomeron phenomenology, a measureable glueball enhancement is predicted in the invariant VV = rho rho ...
B. Lucini, F. E. Close, F. E. Close, I. Iizuka, L. Kisslinger, Robert A. Williams, S. Dubnicka, S. Narison, S. Okubo, Stephen R. Cotanch   +9 more
core   +1 more source