Measurement of the leptonic asymmetry in tt¯ events produced in pp¯ collisions at √s= 1.96  TeV

0501306 - FZÚ 2019 RIV US eng J - Journal Article
Aaltonen, T. - Amerio, S. - Amidei, D. - Lysák, Roman … Total 408 authors
Measurement of the leptonic asymmetry in tt¯ events produced in pp¯ collisions at √s= 1.96  TeV.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 88, č. 7 (2013), s. 1-12, č. článku 072003. ISSN 1550-7998
Institutional support: RVO:68378271
Keywords : Batavia TEVATRON Col * parametrization * correction * acceptance * CDF * anti-p p * interaction * experimental results * 1960 GeV-cms
OECD category: Particles and field physics
Impact factor: 4.864, year: 2013

We measure the asymmetry in the charge-weighted rapidity qyℓ of the lepton in semileptonic tt¯ decays recorded with the CDF II detector using the full Tevatron Run II sample, corresponding to an integrated luminosity of 9.4  fb-1. A parametrization of the asymmetry as a function of qyℓ is used to correct for the finite acceptance of the detector and recover the production-level asymmetry. The result of AFBℓ=0.094-0.029+0.032 is to be compared to the standard model next-to-leading-order prediction of AFBℓ=0.038±0.003.
Permanent Link: http://hdl.handle.net/11104/0293299