|
|||||
|
|
Search for ZZ and Zgamma* production in pp[over ] collisions at square root s=1.96 TeV and limits on anomalous ZZZ and ZZgamma* couplings |
|
| 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 S Banerjee P 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 present a study of micro micro micro micro, eeee, and micro micro ee events using 1 fb(-1) of data collected with the D0 detector at the Fermilab Tevatron ppover ] Collider at square root s=1.96 TeV. Requiring the lepton pair masses to be greater than 30 GeV, we observe one event, consistent with the expected background of 0.13+/-0.03 events and with the predicted standard model ZZ and Zgamma* production of 1.71+/-0.15 events. We set an upper limit on the ZZ and Zgamma* cross section of 4.4 pb at the 95% C.L. We also derive limits on anomalous neutral trilinear ZZZ and ZZgamma* gauge couplings. The one-parameter 95% C.L. coupling limits with a form-factor scale Lambda=1.2 TeV are -0.28 |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ | |