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Author Avila, M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ♦ B MESONS ♦ -TRANSITIONS ♦ D MESONS ♦ WIDTH ♦ BOUND STATE ♦ CENTER-OF-MASS SYSTEM ♦ COLOR ♦ MAGNETIC MOMENTS ♦ RECOILS ♦ SPECTROSCOPY ♦ WAVE FUNCTIONS ♦ BEAUTY PARTICLES ♦ BOSONS ♦ CHARM PARTICLES ♦ CHARMED MESONS ♦ DIMENSIONS ♦ ELEMENTARY PARTICLES ♦ ENERGY-LEVEL TRANSITIONS ♦ FUNCTIONS ♦ HADRONS ♦ MESONS ♦ MULTIPOLE TRANSITIONS ♦ OPTICAL PROPERTIES ♦ ORGANOLEPTIC PROPERTIES ♦ PHYSICAL PROPERTIES ♦ PSEUDOSCALAR MESONS ♦ Electromagnetic Processes & Properties- (1992-) ♦ Models for Strong Interactions- (1992-) ♦ Properties of Mesons & Meson Resonances- (1992-)
Abstract A formalism, covariant up to terms of [ital O](1/[ital M][sub [ital Q]]), is presented, which describes from the center-of-mass frame a (hydrogenlike) system consisting of a heavy quark ([ital Q]) and a light quark ([ital q]). The effective interaction between them is characterized by a color Coulomb-like potential [ital V]=[minus][xi]/[ital r], a linear scalar potential [ital S]=[ital br] ([ital b][gt]0), and a Breit potential. The formalism is applied to [ital B]- and [ital D]-meson spectroscopy and to the calculation of the [ital M]1 widths [Gamma]([sup 3][ital S][sub 1][r arrow][sup 1][ital S][sub 0][gamma]). Recoil effects on these widths are included through a boost (in the opposite direction to the photon momentum) on the final ([ital Q],[ital q]) bound state wave function. By plotting the ratio [ital R][sub [gamma][ital D]][sup *]=[Gamma]([ital D][sup *+][r arrow][ital D][sup +][gamma])/[Gamma]([ital D][sup *0][r arrow][ital D][sup 0][gamma]) as a function of the magnetic moment of the charm quark ([mu][sub [ital c]]) it is found that according to the present experimental value [ital R][sub [gamma][ital D]][sup *([ital e][ital x][ital p][ital t])]=0.04[plus minus]0.08 an anomalous value for [mu][sub [ital c]] could be discarded.
ISSN 05562821
Educational Use Research
Learning Resource Type Article
Publisher Date 1994-01-01
Publisher Place United States
Journal Physical Review, D
Volume Number 49
Issue Number 1


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