Observation of s -channel production of single top quarks at the tevatron

T Aaltonen; VM Abazov; B Abbott; BS Acharya; M Adams; T Adams; JP Agnew; GD Alexeev; G Alkhazov; A Alton; S Amerio; D Amidei; A Anastassov; A Annovi; J Antos; G Apollinari; JA Appel; T Arisawa; A Artikov; J Asaadi; W Ashmanskas; A Askew; S Atkins; B Auerbach; K Augsten; A Aurisano; C Avila; F Azfar; F Badaud; W Badgett; T Bae; L Bagby; B Baldin; DV Bandurin; S Banerjee; A Barbaro-Galtieri; E Barberis; P Baringer; VE Barnes; BA Barnett; P Barria; JF Bartlett; P Bartos; U Bassler; M Bauce; V Bazterra; A Bean; F Bedeschi; M Begalli; S Behari; L Bellantoni; G Bellettini; J Bellinger; D Benjamin; A Beretvas; SB Beri; G Bernardi; R Bernhard; I Bertram; M Besançon; R Beuselinck; PC Bhat; S Bhatia; V Bhatnagar; A Bhatti; KR Bland; G Blazey; S Blessing; K Bloom; B Blumenfeld; A Bocci; A Bodek; A Boehnlein; D Boline; EE Boos; G Borissov; D Bortoletto; M Borysova; J Boudreau; A Boveia; A Brandt; O Brandt; L Brigliadori; R Brock; C Bromberg; A Bross; D Brown; E Brucken; XB Bu; J Budagov; HS Budd; M Buehler; V Buescher; V Bunichev; S Burdin; K Burkett; G Busetto; P Bussey; CP Buszello; P Butti

Journal article

Observation of s -channel production of single top quarks at the tevatron

T Aaltonen, VM Abazov, B Abbott, BS Acharya, M Adams, T Adams, JP Agnew, GD Alexeev, G Alkhazov, A Alton, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, JA Appel, T Arisawa, A Artikov, J Asaadi Show all

Physical Review Letters | Published : 2014

DOI: 10.1103/PhysRevLett.112.231803

Abstract

We report the first observation of single-top-quark production in the s channel through the combination of the CDF and D0 measurements of the cross section in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV. The data correspond to total integrated luminosities of up to 9.7fb-1 per experiment. The measured cross section is σs=1.29-0.24+0.26pb. The probability of observing a statistical fluctuation of the background to a cross section of the observed size or larger is 1.8×10-10, corresponding to a significance of 6.3 standard deviations for the presence of an s-channel contribution to the production of single-top quarks. © 2014 American Physical Society.

University of Melbourne Researchers

Matteo Volpi Author

Grants

Awarded by Science and Technology Facilities Council

Funding Acknowledgements

We thank the Fermilab staff and technical staffs of the participating institutions for their vital contributions. We acknowledge support from the U.S. DOE and NSF (U.S.), ARC (Australia), CNPq, FAPERJ, FAPESP, and FUNDUNESP (Brazil), NSERC (Canada), NSC, CAS, and CNSF (China), Colciencias (Colombia), MSMT and GACR (Czech Republic), the Academy of Finland, CEA and CNRS/IN2P3 (France), BMBF and DFG (Germany), DAE and DST (India), SFI (Ireland), INFN (Italy), MEXT (Japan), the Korean World Class University Program and NRF (Korea), CONACyT (Mexico), FOM (Netherlands), MON, NRC KI, and RFBR (Russia), the Slovak R&D Agency, the Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010 (Spain), The Swedish Research Council (Sweden), SNSF (Switzerland), STFC and the Royal Society (United Kingdom), the A. P. Sloan Foundation (U.S.), and the EU community Marie Curie Fellowship Contract No. 302103.