Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/131200
Title: | Search for new π0-like particles produced in association with a τ-lepton pair |
Author: | Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Leptons (Física nuclear) Particle physics Experiments Leptons (Nuclear physics) |
Issue Date: | 23-Dec-2014 |
Publisher: | American Physical Society |
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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.90.112011 |
It is part of: | Physical Review D, 2014, vol. 90, num. 11, p. 112011 |
URI: | http://hdl.handle.net/2445/131200 |
Related resource: | https://doi.org/10.1103/PhysRevD.90.112011 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
646446.pdf | 332.16 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.