Publications by Sneha Malde


Search for the rare decay eta ' -> pi(0)pi(0)pi(0)pi(0) at BESIII

PHYSICAL REVIEW D 101 (2020) 32001

M Ablikim, M Achasov, P Adlarson, S Ahmed, M Albrecht, M Alekseev, A Amoroso, Q An, YB Anita, O Bakina, RB Ferroli, I Balossino, Y Ban, K Begzsuren, J Bennett, N Berger, M Bertani, D Bettoni, F Bianchi, J Biernat, J Bloms, I Boyko, R Briere, H Cai, X Cai

© 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . Using a sample of 1.31×109 J/ψ events collected with the BESIII detector, we perform a search for the rare decay η′→4π0 via J/ψ→γη′. No significant η′ signal is observed in the 4π0 invariant mass spectrum. With a Bayesian approach, the upper limit on the branching fraction is determined to be B(η′→4π0)<4.94×10-5 at the 90% confidence level, which is a factor of 6 smaller than the previous experimental limit.


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