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MEASUREMENT OF R AND SEARCH FOR THE TOP QUARK IN E+E- ANNIHILATION BETWEEN 39.8 AND 45.2 GEV

Abstract:

e+e- annihilation into hadrons was studied at CM energies between 39.8 and 45.2 GeV and a search was made for new heavy quarks. No evidence was found for the existence of a narrow state excluding the possible existence of the lowest vector toponium state in this mass range. A search for continuum production of heavy quarks led to lower mass limits for new quarks of 22.0 GeV (eQ = 2 3) and 21.0 GeV (eQ = 1 3). Quarks are found to be pointlike, the corresponding mass parameter being larger than...

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Publication status:
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Authors


ALTHOFF, M More by this author
BRAUNSCHWEIG, W More by this author
KIRSCHFINK, F More by this author
LUBELSMEYER, K More by this author
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Journal:
PHYSICS LETTERS B
Volume:
138
Issue:
5-6
Pages:
441-448
Publication date:
1984
DOI:
ISSN:
0370-2693
URN:
uuid:db337e8f-2f44-40b4-9c55-be272b24d83a
Source identifiers:
449
Local pid:
pubs:449
Language:
English

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