Results 11 to 20 of about 198,978 (237)

Spin Information from Vector-Meson Decay in Photoproduction [PDF]

Phys.Rev.C58:1086-1097,1998, 1998
For the photoproduction of vector mesons, all single and double spin observables involving vector meson two-body decays are defined consistently in the $\gamma N$ center of mass. These definitions yield a procedure for extracting physically meaningful single and double spin observables that are subject to known rules concerning their angle and energy ...
C. G. Fasano, Frank Tabakin, J. A. Gómez Tejedor, J. A. Gómez Tejedor, K. Gottfried, K. Schilling, M. Pichowsky, W. M. Kloet, W. T. Chiang, Wen-Tai Chiang   +9 more
arxiv   +4 more sources

A chiral covariant approach to $$\varvec{\rho \rho }$$ ρ ρ scattering

European Physical Journal C: Particles and Fields, 2017
We analyze vector meson–vector meson scattering in a unitarized chiral theory based on a chiral covariant framework restricted to $$\rho \rho $$ ρ ρ intermediate states.
D. Gülmez, U.-G. Meißner, J. A. Oller
doaj   +3 more sources

Decay constants and form factors of s-wave and p-wave mesons in the covariant light-front quark model [PDF]

, 2011
We reanalyze the decay constants of s-wave and p-wave mesons and D, B ->M form factors, where M represents a pseudoscalar meson, a vector meson, a scalar meson, or an axial vector meson within a covariant light-front quark model. The parameter \beta for wave-functions of most of s-wave mesons and of a few axial-vector mesons are fixed with latest ...
Abada A, Abe K Belle Collaboration, Amsler C, Asner D Heavy Flavor Averaging Group, Aubert B, Ball P, Bernard C, Bjorken J D, Bjorken J D, Close F E, Feldmann T, Flynn J M, Hwang C W, Nakamura K, R C Verma, Rosner J L Stone S, Suzuki M   +16 more
arxiv   +3 more sources

Charm meson scattering cross sections by pion and rho meson [PDF]

Nucl.Phys. A689 (2001) 965-979, 2000
Using the local flavor SU(4) gauge invariance in the limit of vanishing vector meson masses, we extend our previous study of charm meson scattering cross sections by pion and rho meson, which is based only on the pseudoscalar-pseudoscalar-vector meson couplings, to include also contributions from the couplings among three vector mesons and among four ...
Baier, Belyaev, Bratkovskaya, Brown, C.M. Ko, Colangelo, Haglin, Haglin, Kapusta, Ko, Li, Lin, Lin, Lin, Lin, Matinyan, Peters, Shuryak, T.G. Di, Tsushima, Ziwei Lin   +20 more
arxiv   +4 more sources

Melting Spectral Functions of the Scalar and Vector Mesons in a Holographic QCD Model [PDF]

Phys.Rev.D81:065024,2010, 2009
We investigate the finite-temperature spectral functions of heavy quarkonia by using the soft-wall AdS/QCD model. We discuss the scalar, the pseudo-scalar, the vector, and the axial-vector mesons and compare their qualitative features of the melting temperature and growing width.
E. Witten, E. Witten, G. Aarts, G. Aarts, J. M. Maldacena, Kenji Fukushima, L. Da Rold, Masaki Murata, Mitsutoshi Fujita, Tatsuhiro Misumi, Toru Kikuchi   +10 more
arxiv   +5 more sources

Branching ratios of $B_c$ Meson Decaying to Vector and Axial-Vector Mesons [PDF]

Phys Rev D 87, 034004 (2013), 2012
We investigate the weak decays of $B_c$ mesons in Cabibbo-Kobayashi-Maskawa favored and suppressed modes. We present a detailed analysis of the $B_c$ meson decaying to vector meson (V) and axial-vector meson (A) in the final state. We also give the form factors involving $B_c \to A$ transition in the Isgur-Scora-Grinstein-Wise II framework and ...
Dhir, Rohit, Kim, C. S.
arxiv   +4 more sources

Pion and Vector Meson Form Factors in the Kuperstein-Sonnenschein holographic model [PDF]

, 2010
We study phenomenological aspects of the holographic model of chiral symmetry breaking recently introduced by Kuperstein and Sonnenschein (KS). As a first step, we calculate the spectrum of vector and axial-vector mesons in the KS model.
A Dymarsky, A Karch, A Strominger, BL Ioffe, C Krishnan, C. A. Ballon Bayona, CA Ballon Bayona, E Witten, E Witten, EG Gimon, GF Teramond de, H Boschi-Filho, H Boschi-Filho, H Boschi-Filho, H. Boschi-Filho, HR Grigoryan, I Kirsch, IR Klebanov, IR Klebanov, J Erdmenger, J Erlich, J Evslin, JM Maldacena, M Kruczenski, M. A. C. Torres, Matthias Ihl, O Aharony, P Ouyang, R Minasian, S Hong, S Kuperstein, S Kuperstein, SJ Brodsky, T Horn, T Sakai, T Sakai, THR Skyrme, TS Levi, V Tadevosyan   +38 more
core   +1 more source

Contribution of higher meson resonances to the electromagnetic $\pi$-meson mass difference [PDF]

, 2001
Modifications of the DGMLY relation for calculation of electromagnetic $\pi$-meson mass difference based on the Chiral Symmetry Restoration phenomenon at high energies as well as the Operator Product Expansion of quark densities for vector ($\rho$) and ...
A. A. Andrianov, A. A. Andrianov, A. A. Andrianov, ALEPH Collab., C. A. Baker, D. E. Groom, D. Espriu, D. Gross, E. Witten, G. Ecker, G. Hooft 't, J. Bijnens, J. Bijnens, J. Bijnens, J. Donoghue, J. Gasser, J. Gasser, J. Gasser, L. J. Reinders, M. A. Shifman, M. K. Volkov, M. Knecht, M. Knecht, M. Knecht, O. A. Zaimidoroga, OPAL Collab., R. D. Peccei, R. Socolow, S. S. Afonin, S. Weinberg, T. Das, T. Minamikawa, V. A. Andrianov, W. A. Bardeen   +33 more
core   +2 more sources

Complete calculation of exclusive heavy vector meson production at next-to-leading order in the dipole picture

Journal of High Energy Physics, 2022
Exclusive production of transversely polarized heavy vector mesons in deep inelastic scattering at high energy is calculated at next-to-leading order accuracy in the Color Glass Condensate framework.
Heikki Mäntysaari, Jani Penttala
doaj   +1 more source

Vector mesons polarization versus color transparency

EPJ Web of Conferences, 2017
Vector mesons V = ρ, ω, φ can be transversely (helicity λ = ±1) or longitudinally (λ = 0) polarized. Can vector mesons polarization influence on their interaction with nucleons and nuclei?
Gevorkyan Sergey
doaj   +1 more source