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

Lees, J. P.
•
Poireau, V.
•
Tisserand, V.
altro
Wu, S. L.
2014
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
We report on a search in e+e- annihilations for new π0-like particles produced in association with a τ-lepton pair. These objects, with a similar mass and similar decay modes to π0 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.
DOI
10.1103/PhysRevD.90.112011
WOS
WOS:000348360900001
Archivio
http://hdl.handle.net/11368/2836178
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84919897826
http://www.scopus.com/inward/record.url?eid=2-s2.0-84919897826&partnerID=40&md5=e2db9cf7a558c85e159088de41ba7be6
Diritti
metadata only access
Soggetti
  • Nuclear and High Ener...

Web of Science© citazioni
3
Data di acquisizione
Mar 25, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
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