We present the results of a search for the b→dℓ+ ℓ- flavor-changing neutral-current rare decays B+,0→(η,ω,π+,0,ρ+,0)e+e- and B+,0→(η,ω,π0,ρ+)μ+μ- using a 711 fb-1 data sample that contains 772×106 BB¯ events. The data were collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We find no evidence for signal and set upper limits on branching fractions at the 90% confidence level in the range (3.8-47)×10-8 depending on the decay channel. The obtained limits are the world's best results. This is the first search for the channels B+,0→(ω,ρ+,0)e+e- and B+,0→(ω,ρ+)μ+μ-.

Search for Rare b →dℓ+ ℓ- Transitions at Belle / Adachi, I., Aggarwal, L., Aihara, H., Akopov, N., Aloisio, A., Al Said, S., Asner, D.M., Atmacan, H., Aushev, V., Aversano, M., Ayad, R., Babu, V., Bae, H., Bahinipati, S., Bambade, P., Banerjee, S., Bansal, S., Barrett, M., Baudot, J., Beaubien, A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 133:10(2024). [10.1103/PhysRevLett.133.101804]

Search for Rare b →dℓ+ ℓ- Transitions at Belle

Aloisio A.;Campajola M.;De Nardo G.;Di Capua F.;Gaudino G.;Giordano R.;Merola M.;Mirra M.;Pardi S.;Russo Guido;
2024

Abstract

We present the results of a search for the b→dℓ+ ℓ- flavor-changing neutral-current rare decays B+,0→(η,ω,π+,0,ρ+,0)e+e- and B+,0→(η,ω,π0,ρ+)μ+μ- using a 711 fb-1 data sample that contains 772×106 BB¯ events. The data were collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We find no evidence for signal and set upper limits on branching fractions at the 90% confidence level in the range (3.8-47)×10-8 depending on the decay channel. The obtained limits are the world's best results. This is the first search for the channels B+,0→(ω,ρ+,0)e+e- and B+,0→(ω,ρ+)μ+μ-.
2024
Search for Rare b →dℓ+ ℓ- Transitions at Belle / Adachi, I., Aggarwal, L., Aihara, H., Akopov, N., Aloisio, A., Al Said, S., Asner, D.M., Atmacan, H., Aushev, V., Aversano, M., Ayad, R., Babu, V., Bae, H., Bahinipati, S., Bambade, P., Banerjee, S., Bansal, S., Barrett, M., Baudot, J., Beaubien, A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 133:10(2024). [10.1103/PhysRevLett.133.101804]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/985085
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 16
social impact