Search for a new gauge boson in electron-nucleus fixed-target scattering by the APEX experiment

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dc.creator Abrahamyan, S.
dc.creator Ahmed, Z.
dc.creator Allada, K.
dc.creator Anez, D.
dc.creator Averett, T.
dc.creator Barbieri, A.
dc.creator Bartlett, K.
dc.creator Beacham, J.
dc.creator Bono, J
dc.creator Boyce, J.R.
dc.date.accessioned 2013-08-28T14:10:55Z
dc.date.available 2013-08-28T14:10:55Z
dc.date.issued 2011-11
dc.identifier.issn 0031-9007
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/25105
dc.description Publisher's version/PDF
dc.description.abstract We present a search at the Jefferson Laboratory for new forces mediated by sub-GeV vector bosons with weak coupling [alpha] 'to electrons. Such a particle [Alpha] can be produced in electron-nucleus fixed-target scattering and then decay to an e[superscript +] e[superscript -] pair, producing a narrow resonance in the QED trident spectrum. Using APEX test run data, we searched in the mass range 175–250 MeV, found no evidence for an [Alpha] --> e[superscript +] e[superscript -] reaction, and set an upper limit of [alpha]/[alpha] = 10[superscript -6]. Our findings demonstrate that fixed-target searches can explore a new, wide, and important range of masses and couplings for sub-GeV forces. en_CA
dc.description.provenance Submitted by Trish Grelot (trish.grelot@smu.ca) on 2013-08-28T14:10:55Z No. of bitstreams: 1 anez_d_article_2011.pdf: 370359 bytes, checksum: 50085be59a91aa86cc543c97d465ed2d (MD5) en
dc.description.provenance Made available in DSpace on 2013-08-28T14:10:55Z (GMT). No. of bitstreams: 1 anez_d_article_2011.pdf: 370359 bytes, checksum: 50085be59a91aa86cc543c97d465ed2d (MD5) Previous issue date: 2011 en
dc.language.iso en en_CA
dc.publisher American Physical Society en_CA
dc.relation.uri http://dx.doi.org/10.1103/PhysRevLett.107.191804
dc.rights Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
dc.subject.lcsh Bosons
dc.subject.lcsh Electron-nucleus scattering
dc.subject.lcsh Quantum electrodynamics
dc.title Search for a new gauge boson in electron-nucleus fixed-target scattering by the APEX experiment en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Physical Review Letters 107, 191804. (2011)
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Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
 
Published Version: http://dx.doi.org/10.1103/PhysRevLett.107.191804
 
 

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