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Search for production of invisible final states in single-photon decays of Υ(1S)

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BABAR Collaboration (Including: Gershon, T. J. and Harrison, P. F.). (2011) Search for production of invisible final states in single-photon decays of Υ(1S). Physical Review Letters, Vol.107 (No.2). Article 021804 . ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.107.021804

Abstract

We search for single-photon decays of the Gamma(1S) resonance, Gamma -> gamma + invisible, where the invisible state is either a particle of definite mass, such as a light Higgs boson A(0), or a pair of dark matter particles, chi(chi) over bar. Both A(0) and chi are assumed to have zero spin. We tag Gamma(1S) decays with a dipion transition Gamma(1S) -> pi(+)pi(-)Y(1S) and look for events with a single energetic photon and significant missing energy. We find no evidence for such processes in the mass range m(A0) <= 9.2 GeV and m(chi) <= 4.5 GeV in the sample of 98 x 10(6) Gamma(2S) decays collected with the BABAR detector and set stringent limits on new physics models that contain light dark matter states.

Item Type:

Journal Article

Subjects:

Q Science > QC Physics

Divisions:

Faculty of Science > Physics

Library of Congress Subject Headings (LCSH):

Higgs bosons, Dark matter (Astronomy), Photon detectors, Photons

Journal or Publication Title:

Physical Review Letters

Publisher:

American Physical Society

ISSN:

0031-9007

Official Date:

6 July 2011

Dates:

Date	Event
6 July 2011	Published

Volume:

Vol.107

Number:

No.2

Page Range:

Article 021804

Identifier:

10.1103/PhysRevLett.107.021804

Status:

Peer Reviewed

Publication Status:

Published

Funder:

United States. Dept. of Energy (DoE), National Science Foundation (U.S.) (NSF), Natural Sciences and Engineering Research Council Canada (NSERC), France. Commissariat à l'énergie atomique (CEA), Institut national de physique nucléaire et de physique des particules (IN2P3), Germany. Bundesministerium für Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Istituto nazionale di fisica nucleare (INFN), Stichting voor Fundamenteel Onderzoek der Materie (FOM), Norges forskningsråd (NFR), Ministry of Education and Science of the Russian Federation (MESRF), Spain. Ministerio de Ciencia e Innovación (MCI), Science and Technology Facilities Council (Great Britain) (STFC), European Union (EU), Alfred P. Sloan Foundation, United States-Israel Binational Science Foundation

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