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We present the first search for the semileptonic decay D-s(+) -> pi(0)e(+)nu(e) using a data sample of electron-positron collisions recorded with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, corresponding to an integrated luminosity of 6.32 fb(-1). This decay is expected to be sensitive to pi(0)-eta mixing. No significant signal is observed. We set an upper limit of 6.4 x 10(-5) on the branching fraction at the 90% confidence level.

Search for the semileptonic decay D-s(+) -> pi(0)e(+)nu(e)

Amoroso, A;Bianchi, F;Bortone, A;Destefanis, M;De Mori, F;Greco, M;Hu, JF;Lavezzi, L;Maggiora, M;Marcello, S;Rivetti, A;Sosio, S;Spataro, S;
2022-01-01

Abstract

We present the first search for the semileptonic decay D-s(+) -> pi(0)e(+)nu(e) using a data sample of electron-positron collisions recorded with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, corresponding to an integrated luminosity of 6.32 fb(-1). This decay is expected to be sensitive to pi(0)-eta mixing. No significant signal is observed. We set an upper limit of 6.4 x 10(-5) on the branching fraction at the 90% confidence level.
2022
PHYSICAL REVIEW D
106
11
112004-1
112004-11
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.106.112004
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1890169
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