Search for second-generation leptoquark pairs in ¯pp collisions at √s=1.8TeV

B. Abbott, M. Abolins, V. Abramov, B. S. Acharya, D. L. Adams, M. Adams, S. Ahn, V. Akimov, G. A. Alves, N. Amos, E. W. Anderson, M. M. Baarmand, V. V. Babintsev, L. Babukhadia, A. Baden, B. Baldin, S. Banerjee, J. Bantly, E. Barberis, P. BaringerJ. F. Bartlett, U. Bassler, A. Belyaev, S. B. Beri, G. Bernardi, I. Bertram, V. A. Bezzubov, P. C. Bhat, V. Bhatnagar, M. Bhattacharjee, G. Blazey, S. Blessing, A. Boehnlein, N. I. Bojko, F. Borcherding, A. Brandt, R. Breedon, G. Briskin, R. Brock, G. Brooijmans, A. Bross, D. Buchholz, V. S. Burtovoi, J. M. Butler, W. Carvalho, D. Casey, Z. Casilum, H. Castilla-Valdez, D. Chakraborty, K. M. Chan, S. V. Chekulaev, W. Chen, D. K. Cho, S. Choi, S. Chopra, B. C. Choudhary, J. H. Christenson, M. Chung, D. Claes, A. R. Clark, W. G. Cobau, J. Cochran, L. Coney, B. Connolly, W. E. Cooper, D. Coppage, D. Cullen-Vidal, M. A.C. Cummings, D. Cutts, O. I. Dahl, K. Davis, K. De, K. Del Signore, M. Demarteau, D. Denisov, S. P. Denisov, H. T. Diehl, M. Diesburg, G. Di Loreto, P. Draper, Y. Ducros, L. V. Dudko, S. R. Dugad, A. Dyshkant, D. Edmunds, J. Ellison, V. D. Elvira, R. Engelmann, S. Eno, G. Eppley, P. Ermolov, O. V. Eroshin, J. Estrada, H. Evans, V. N. Evdokimov, T. Fahland, M. K. Fatyga, S. Feher, D. Fein, T. Ferbel

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Abstract

We have searched for second-generation leptoquark (LQ) pairs in the μμ+jets channel using 94 ±5pb−1of ¯pp 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 μν+jets and νν+jets channels to obtain 95% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and β, the branching fraction of a LQ decay into a charged lepton and a quark. Lower limits of 200(180)GeV/c2for β=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 β. © 2000 The American Physical Society.
Original languageEnglish
Pages (from-to)2088-2093
Number of pages6
JournalPhysical Review Letters
DOIs
Publication statusPublished - 1 Jan 2000
Externally publishedYes

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    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., ... Ferbel, T. (2000). Search for second-generation leptoquark pairs in ¯pp collisions at √s=1.8TeV. Physical Review Letters, 2088-2093. https://doi.org/10.1103/PhysRevLett.84.2088