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 "" 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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