Hard-scattering approach to strongly hindered magnetic-dipole transitions in quarkonium
نویسندگان
چکیده
منابع مشابه
Model-independent study of magnetic dipole transitions in quarkonium
1550-7998=20 We study magnetic dipole (M1) transitions between two quarkonia in the framework of nonrelativistic effective field theories of QCD. Relativistic corrections of relative order v2 are investigated in a systematic fashion. Nonperturbative corrections due to color-octet effects are considered for the first time and shown to vanish at relative order v2. Exact, all order expressions for...
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Abstract. Some new results on magnetic dipole (M1) transitions in heavy quarkonium from nonrelativistic effective field theories of QCD are briefly reported. This model-independent approach not only facilitates a systematic and lucid way to investigate the relativistic corrections, it also clarifies some inconsistent treatment in previous potential model approach. The impact of our formalism on...
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In homonuclear molecules, such as H2, the electric dipole transitions are strongly forbidden, and the transitions between rovibrational states are of the electric quadrupole type. We show however, that magnetic dipole transitions also take place, although are significantly weaker. We evaluate the probabilities of such transitions between several lowest rotational states and compare them with th...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2010
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.82.014008