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Title
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Search for excited quarks in **ep** collisions at HERA
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Author
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Institution/Organisation
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H1 Collaboration
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Abstract
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| A search for excited quarks is performed using the full e}p data sample collected by the H1 experiment at HERA, corresponding to a total integrated luminosity of 475 pb−1. The electroweak decays of excited quarks q*¨qÁ, q*¨qZ and q*¨qW with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for first generation excited quark production is found. Mass dependent exclusion limits on q* production cross sections and on the ratio f/© of the coupling to the compositeness scale are derived within gauge mediated models. These limits extend the excluded region compared to previous excited quark searches. |
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Language
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English
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Source (journal)
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Physics letters : B. - Amsterdam, 1967, currens
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Publication
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Amsterdam
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North-Holland
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2009
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ISSN
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0370-2693
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Volume/pages
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678
:4
(2009)
, p. 335-343
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ISI
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000268533800002
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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