Search for new heavy quarks in proton-antiproton collisions at $$\sqrt s = 0.63 TeV$$
Albajar, C. ; Albrow, M. G. ; Allkofer, O. C. ; Andrieu, B. ; Ankoviak, K. ; Apsimon, R. ; Aubert, B. ; Bacci, C. ; Bartha, S. ; Bauer, G. ; Beingessner, S. ; Bettini, A. ; Bezaguet, A. ; Biddulph, P. ; Bohn, H. ; Böhrer, A. ; Bonino, R. ; Bos, K. ; Botlo, M. ; Brockhausen, D. ; Buchanan, C. ; Buschbeck, B. ; Busetto, G. ; Caner, A. ; Casoli, P.
Springer
Published 1990
Springer
Published 1990
| ISSN: |
1434-6052
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract We report on a search for new heavy quarks decaying semileptonically into muons, using 4.7 pb−1 of data taken during the CERN $$p\bar p$$ collider runs in 1988 and 1989. The properties of isolated muons accompanied by jets are consistent with the predictions from the Standard Model but do not show a signal for a new heavy quark. Combining all the UA1 data (5.4 pb−1), lower mass limits are obtained at 60 GeV/c2 (95% CL) for thet-quark and 43 GeV/c2 (95% CL) for a fourth-generation charge-1/3 quark (b′-quark).
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| Type of Medium: |
Electronic Resource
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| URL: |