CaltechAUTHORS
Published December 23, 2014 | Version Published + Submitted
Journal Article Open

Search for new π^0-like particles produced in association with a τ-lepton pair

Creators

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.

Additional Information

© 2014 American Physical Society. Received 11 November 2014; published 23 December 2014. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MINECO (Spain), STFC (United Kingdom), BSF (USA-Israel). Individuals have received support from the Marie Curie IEF program (European Union) and the A. P. Sloan Foundation (USA).

Attached Files

Published - PhysRevD.90.112011.pdf

Submitted - 1411.1806v2.pdf

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1411.1806v2.pdf

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Additional details

Identifiers

Eprint ID
55050
Resolver ID
CaltechAUTHORS:20150220-110607908

Related works

Describes
http://arxiv.org/abs/1411.1806 (URL)

Funding

Department of Energy (DOE)
NSF
Natural Sciences and Engineering Research Council of Canada (NSERC)
CEA and CNRS/IN2P3 (France)
BMBF and DFG (Germany)
Istituto Nazionale di Fisica Nucleare (INFN)
Stichting voor Fundamenteel Onderzoek der Materie (FOM)
Norwegian Research Council
MES (Russia)
MINECO (Spain)
Science and Technology Facilities Council (STFC)
Binational Science Foundation (USA-Israel)
Marie Curie Fellowship
Alfred P. Sloan Foundation

Dates

Created
2015-02-20
Created from EPrint's datestamp field
Updated
2021-11-10
Created from EPrint's last_modified field