Search for second-generation leptoquark pairs in $\bar{p}p$ collisions at $\sqrt s$ = 1.8 TeV

Search for second-generation leptoquark pairs in $\bar{p}p$ collisions at $\sqrt s$ = 1.8 TeV

We have searched for second generation leptoquark (LQ) pairs in the \mu\mu+jets channel using 94+-5 pb^{-1} of pbar-p collider data collected by the D0 experiment at the Fermilab Tevatron during 1993-1996. No evidence for a signal is observed. These results are combined with those from the \mu\nu+je...

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Veröffentlicht in:Physical review letters 2000, Vol.84, p.2088-2093
Hauptverfasser: Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adams, D.L., Adams, M., Ahn, S., Akimov, V., Alves, G.A., Amos, N., Anderson, E.W., Baarmand, M.M., Babintsev, V.V., Babukhadia, L., Baden, A., Baldin, B., Banerjee, S., Bantly, J., Barberis, E., Baringer, P., Bartlett, J.F., Bassler, U., Belyaev, A., Beri, S.B., Bernardi, G., Bertram, I., Bezzubov, V.A., Bhat, P.C., Bhatnagar, V., Bhattacharjee, M., Blazey, G., Blessing, S., Boehnlein, A., Bozhko, N.I., Borcherding, F., Brandt, A., Breedon, R., Briskin, G., Brock, R., Brooijmans, G., Bross, A., Buchholz, D., Burtovoi, V.S., Butler, J.M., Carvalho, W., Casey, D., Casilum, Z., Castilla-Valdez, H., Chakraborty, D., Chan, K.M., Chekulaev, S.V., Chen, W. M., Cho, D.K., Choi, S. K., Chopra, S., Choudhary, B.C., Christenson, J.H., Chung, M., Claes, D., Clark, A.R., Cobau, W.G., Cochran, J., Coney, L., Connolly, B., Cooper, W.E., Coppage, D., Cullen-Vidal, D., Cummings, M.A.C., Cutts, D., Dahl, O.I., Davis, K., De, K., del Signore, K., Demarteau, M., Denisov, D., Denisov, S.P., Diehl, H.T., Diesburg, M., Diloreto, G., Draper, P., Ducros, Y., Dudko, L.V., Dugad, S.R., Dyshkant, A., Edmunds, D., Ellison, J., Elvira, V.D., Engelmann, R., Eno, S., Eppley, G., Ermolov, P., Eroshin, O.V., Estrada, J., Evans, H., Evdokimov, V.N., Fahland, T., Fatyga, M.K., Feher, S., Fein, D., Ferbel, T.
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Sprache:eng
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High Energy Physics - Experiment
Physics
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Zusammenfassung:We have searched for second generation leptoquark (LQ) pairs in the \mu\mu+jets channel using 94+-5 pb^{-1} of pbar-p collider data collected by the D0 experiment at the Fermilab Tevatron during 1993-1996. No evidence for a signal is observed. These results are combined with those from the \mu\nu+jets and \nu\nu+jets channels to obtain 95% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and $beta, the branching fraction of a LQ decay into a charged lepton and a quark. Lower limits of 200(180) GeV/c^2 for \beta=1(1/2) are set at the 95% C.L. on the mass of scalar LQ. Mass limits are also set on vector leptoquarks as a function of \beta.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.84.2088