On the nature of χ c 2 (2 P ): two-gluon decay
نویسندگان
چکیده
منابع مشابه
hep - ph / 0307386 July 2003 χ c 1 and χ c 2 decay angular distributions at the Fermilab Tevatron
We consider the hadroproduction of χ c1 and χ c2 mesons and their subsequent radiative decays to J/ψ mesons and photons in the factorization formalism of non-relativistic quantum chromodynamics, and study the decay angular distributions, by means of helicity density matrices, in view of their sensitivity to color-octet processes. We present numerical results appropriate for the Fermilab Tevatron.
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R. J. Charity,1 J. M. Elson,1 J. Manfredi,2 R. Shane,2 L. G. Sobotka,1,2 Z. Chajecki,3 D. Coupland,3 H. Iwasaki,3 M. Kilburn,3 Jenny Lee,3 W. G. Lynch,3 A. Sanetullaev,3 M. B. Tsang,3 J. Winkelbauer,3 M. Youngs,3 S. T. Marley,4 D. V. Shetty,4 A. H. Wuosmaa,4 T. K. Ghosh,5 and M. E. Howard6 1Department of Chemistry, Washington University, St. Louis, Missouri 63130, USA 2Department of Physics, Wa...
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Using the fact that the c-quark inside a charmonium moves with a small velocity v in the charmonium rest-frame, one can employ an expansion in v to study decays of charmonia and results at the leading order for χc0,2 → γγ exist in the literature. We study corrections at the next-to-leading order in the framework of nonrelativistic QCD(NRQCD) factorization. The study presented here is different ...
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ژورنال
عنوان ژورنال: Chinese Physics C
سال: 2017
ISSN: 1674-1137
DOI: 10.1088/1674-1137/41/12/123102