A novel method for modeling the recoil in W boson events at hadron collider

0335544 - FZÚ 2010 RIV NL eng J - Journal Article
Abazov, V. M. - Abbott, B. - Abolins, M. - Kupčo, Alexander - Lokajíček, Miloš
A novel method for modeling the recoil in W boson events at hadron collider.
[Nová metoda pro modelováni recoilu ve srážkách obsahujících W boson.]
Nuclear Instruments & Methods in Physics Research Section A. Roč. 609, 2-3 (2009), 250-262. ISSN 0168-9002. E-ISSN 1872-9576
R&D Projects: GA MŠMT LC527; GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : D0 * recoil * W boson * hadron
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 1.317, year: 2009

We present a new method for modeling the hadronic recoil in W->lnu events produced at hadron colliders. The recoil is chosen from a library of recoils in Z->ll data events and overlaid on a simulated W->lnu event. Implementation of this method requires that the data recoil library describe the properties of the measured recoil as a function of the true, rather than the measured, transverse momentum of the boson. We address this issue using a multidimensional Bayesian unfolding technique. We estimate the statistical and systematic uncertainties from this method for the W boson mass and width measurements assuming 1 fb-1 of data from the Fermilab Tevatron. The uncertainties are found to be small and comparable to those of a more traditional parameterized recoil model. For the high precision measurements that will be possible with data from Run II of the Fermilab Tevatron and from the CERN LHC

Článek představuje novou metodu pro modelování hadronového recoilu v případech rozpadu W -> lepton neutrino na hadronových urychlovačích. Výběr recoilu je proveden z knihovny obsahující recoily v eventech Z->lepton lepton a je proveden překryv na simulovaných eventech W -> lepton neutrino.
Permanent Link: http://hdl.handle.net/11104/0179980