Measurement of three-jet differential cross sections dσ.sub.3jet./sub./dM .sub.3jet./sub. in ppbar collisions at √s = 1.96 TeV

0367776 - FZÚ 2013 RIV NL eng J - Článek v odborném periodiku
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš … celkem 421 autorů
Measurement of three-jet differential cross sections dσ_3jet/dM _3jet in ppbar collisions at √s = 1.96 TeV.
Physics Letters. B. Roč. 704, č. 5 (2011), s. 434-441. ISSN 0370-2693. E-ISSN 1873-2445
Grant CEP: GA MŠMT LA08047
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: D0 * Tevatron * parton * jet * anti-p p * parametrization * rapidity dependence
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 3.955, rok: 2011

We present the first measurement of the inclusive three-jet differential cross section as a function of the invariant mass of the three jets with the largest transverse momenta in an event in p anti-p collisions at sqrt(s) = 1.96 TeV. The measurement is made in different rapidity regions and for different jet transverse momentum requirements and is based on a data set corresponding to an integrated luminosity of 0.7 fb-1 collected with the D0 detector at the Fermilab Tevatron Collider. The results are used to test the three-jet matrix elements in perturbative QCD calculations at next-to-leading order in the strong coupling constant. The data allow discrimination between parametrizations of the parton distribution functions of the proton
Trvalý link: http://hdl.handle.net/11104/0202330