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Search for the weak decays J/psi -> D-s(()*()-) e(+)nu(e) + c.c.
(American Physical Society, 2014-12-23)
Using a sample of 2.25 x 10(8) J/psi events collected with the BESIII detector at the BEPCII collider, we search for the J/psi semileptonic weak decay J/psi -> D-s(-) e(+)nu(e) +c.c. with a much higher sensitivity than ...