Published December 23, 2014
| Published + Submitted
Journal Article
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Search for new π^0-like particles produced in association with a τ-lepton pair
Chicago
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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Additional details
- Eprint ID
- 55050
- Resolver ID
- CaltechAUTHORS:20150220-110607908
- 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
- Created
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2015-02-20Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field