Please use this identifier to cite or link to this item:
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
Leptons (Física nuclear)
Particle physics
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:
It is part of: Physical Review D, 2014, vol. 90, num. 11, p. 112011
Related resource:
ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

Files in This Item:
File Description SizeFormat 
646446.pdf332.16 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.