Tensor mesons produced in tau lepton decays

Details Tensor mesons produced in tau lepton decays Tensor mesons produced in tau lepton decays

2011-03-15

arxiv.org/abs/1103.2993v2

Phys.Rev.D83:094016,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 1 figure. Version accepted for publication in PRD, some typos are corrected and comments are added in section 4. Con

Scientific paper

10.1103/PhysRevD.83.094016

Light tensor mesons (T = a_2, f_2 and K_2^*) can be produced in decays of tau leptons. In this paper we compute the branching ratios of tau --> T pi nu decays by assuming the dominance of intermediate virtual states to model the form factors involved in the relevant hadronic matrix element. The exclusive f_2(1270) pi^- decay mode turns out to have the largest branching ratio, of O(10^-4) . Our results indicate that the contributions of tensor meson intermediate states to the three-pseudoscalar channels of tau decays are rather small.

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