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Measurement of the tt[over] production cross section in pp[over] collisions at sqrt(s)=1.96 TeV |
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| 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 Aoki M Arnoud Y Arov M Arthaud M Askew A Asman B Assis Jesus A C S Atramentov O 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 Bertram I Besançon M |
| Institution: | Joint Institute for Nuclear Research, Dubna, Russia. |
| Abstract: | We measure the ttover] production cross section in ppover] collisions at sqrt(s)=1.96 TeV in the lepton + jets channel. Two complementary methods discriminate between signal and background: b tagging and a kinematic likelihood discriminant. Based on 0.9 fb(-1) of data collected by the D0 detector at the Fermilab Tevatron Collider, we measure sigma(ttover])=7.62+/-0.85 pb, assuming the current world average m(t)=172.6 GeV. We compare our cross section measurement with theory predictions to determine a value for the top-quark mass of 170+/-7 GeV. |
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