Files

646446.pdf (332.16 KB)

Document type

Article

Version

Published version

Publication date

2014-12-23

All rights reserved

Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/131200

Search for new π0-like particles produced in association with a τ-lepton pair

Journal Title

Authors

Director/Tutor

Additional contribution

Journal ISSN

Volume Title

Abstract

We report on a search in e + e − annihilations for new π 0 -like particles produced in association with a τ -lepton pair. These objects, with a similar mass and similar decay modes to π 0 mesons, could provide an explanation for the non-asymptotic behavior of the pion-photon transition form factor observed by the BABAR Collaboration. No significant signal is observed, and limits on the production cross section at the level of 73 fb or 370 fb, depending on the model parameters, are determined at 90% confidence level. These upper limits lie below the cross section values needed to explain the BABAR form factor data.

Related resource

https://doi.org/10.1103/PhysRevD.90.112011

Subject

Física de partícules, Experiments, Leptons (Física nuclear)

Subject (English)

Particle physics, Experiments, Leptons (Nuclear physics)

Citation

Collections

Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

GRAUGÉS POUS, Eugeni and BABAR Collaboration. Search for new π0-like particles produced in association with a τ-lepton pair. Physical Review D. 2014. Vol. 90, num. 11, pags. 112011. ISSN 1550-7998. [consulted: 14 of October of 2026]. Available at: https://hdl.handle.net/2445/131200

Export metadata

JSON - METS

Share record