Search for third-generation scalar leptoquarks in pp at square root s=1.96 TeV

• Published in: Physical review letters 2007-08, Vol.99 (6), p.061801-061801
• Main Authors: Abazov, V M, Abbott, B, Abolins, M, Acharya, B S, Adams, M, Adams, T, Aguilo, E, Ahn, S H, Ahsan, M, Alexeev, G D, Alkhazov, G, Alton, A, Alverson, G, Alves, G A, Anastasoaie, M, Ancu, L S, Andeen, T, Anderson, S, Andrieu, B, Anzelc, M S, Arnoud, Y, Arov, M, Arthaud, M, Askew, A, Asman, B, Assis Jesus, A C S, Atramentov, O, Autermann, C, Avila, C, Ay, C, Badaud, F, Baden, A, Bagby, L, Baldin, B, Bandurin, D V, Banerjee, P, Banerjee, S, Barberis, E, Barfuss, A-F, Bargassa, P, Baringer, P, Barreto, J, Bartlett, J F, Bassler, U, Bauer, D, Beale, S, Bean, A, Begalli, M, Begel, M, Belanger-Champagne, C, Bellantoni, L, Bellavance, A, Benitez, J A, Beri, S B, Bernardi, G, Bernhard, R, Berntzon, L, Bertram, I, Besançon, M, Beuselinck, R, Bezzubov, V A, Bhat, P C, Bhatnagar, V, Biscarat, C, Blazey, G, Blekman, F, Blessing, S, Bloch, D, Bloom, K, Boehnlein, A, Boline, D, Bolton, T A, Borissov, G, Bos, K, Bose, T, Brandt, A, Brock, R, Brooijmans, G, Bross, A, Brown, D, Buchanan, N J, Buchholz, D, Buehler, M, Buescher, V, Burdin, S, Burke, S, Burnett, T H, Buszello, C P, Butler, J M, Calfayan, P, Calvet, S, Cammin, J, Caron, S, Carvalho, W, Casey, B C K, Cason, N M, Castilla-Valdez, H, Chakrabarti, S, Chakraborty, D, Chan, K
• Format: Article
• Language: English
• ISSN: 0031-9007

We report on a search for charge-1/3 third-generation leptoquarks (LQ) produced in pp collisions at square root s =1.96 TeV using the D0 detector at Fermilab. Third-generation leptoquarks are assumed to be produced in pairs and to decay to a tau neutrino and a b quark with branching fraction B. We place upper limits on sigma(pp --> LQLQ)B2 as a function of the leptoquark mass M(LQ). Assuming B=1, we exclude at the 95% confidence level third-generation scalar leptoquarks with M(LQ)