Search for the decay Ds+→a0(980)0e+νe

Using 6.32 fb–1 of electron-positron collision data recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, we present the first search for the decay $D^{+}_{s}$ → a0(980)0e+νe, a0(980)0 → π0η, which could proceed via a0(980) – f0(980) mixing. No significant signal is...

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Published in:Physical review. D 2021-05, Vol.103 (9)
Main Authors: Bai, Y., Bakina, O., Begzsuren, K., Bianchi, F., Bloms, J., Briere, R.  A., Cai, X., Calcaterra, A., Chen, S.  J., Dbeyssi, A., Fan, Y.  L., Fang, S.  S., Geng, C., Guo, Y.  P., Heinsius, F.  H., Hou, G.  Y., Hu, J.  F., Imoehl, W., Janchiv, S., Jiang, X.  S., Johansson, T., Kiese, P., Koch, L., Kuessner, M., Li, F., Li, L.  K., Li, S.  Y., Li, X.  H., Li, X.  L., Liang, Y.  T., Liao, L.  Z., Liu, F.  H., Liu, Q., Liu, Shuai, Liu, X., Liu, Y., Luo, C.  L., Luo, P.  W., Ma, H.  L., Ma, L.  L., Ma, R.  T., Ma, X.  Y., Maas, F.  E., Maggiora, M., Maldaner, S., Malde, S., Marcello, S., Nikolaev, I.  B., Peng, H.  P., Poling, R., Qin, X.  P., Rashid, K.  H., Rong, G., Schoenning, K., Shan, D.  C., Shao, M., Shen, C.  P., Shi, H.  C., Shi, X., Su, P.  P., Sun, G.  X., Sun, H.  K., Sun, T., Sun, Z.  T., Wang, H.  J., Wang, M., Wang, M.  Z., Wang, W., Wang, X.  L., Wang, Y.  Y., Wang, Z., Xiao, Z.  J., Xu, G.  F., Xu, Q.  J., Xu, Y.  C., Yan, W.  C., Yang, H.  X., Yang, Zhi, Yu, B.  X., Yu, C.  X., Yuan, X.  Q., Yuan, Y., Yuan, Z.  Y., Zeng, X. Zeng, Zhang, H.  H., Zhang, J.  J., Zhang, J.  Q., Zhang, Lei, Zhang, Shulei, Zhang, X.  D., Zhang, Y.  H., Zhang, Yan, Zhang, Z.  H., Zhao, G., Zhemchugov, A., Zheng, Y.  H., Zhou, X.  K., Zhou, X.  R., Zhu, A.  N., Zhu, J.
Format: Article
Language:English
Subjects:
Astronomy & Astrophysics
Particle decays
Particle interactions
Particle mixing and oscillations
Particle phenomena
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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Summary:Using 6.32 fb–1 of electron-positron collision data recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, we present the first search for the decay $D^{+}_{s}$ → a0(980)0e+νe, a0(980)0 → π0η, which could proceed via a0(980) – f0(980) mixing. No significant signal is observed. An upper limit of 1.2 × 10–4 at the 90% confidence level is set on the product of the branching fractions of $D^{+}_{s}$ → a0(980)0e+νe and a0(980)0 → π0η decays.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.103.092004