Probing the spin correlations of t(t)over-bar production at NLO QCD plus EW

被引：0

作者：

Frederix, Rikkert ^{[1
]}

Tsinikos, Ioannis ^{[1
]}

Vitos, Timea ^{[1
]}

机构：

[1] Lund Univ, Theoret Particle Phys, Dept Astron & Theoret Phys, Solvegatan 14 S, S-22362 Lund, Sweden

来源：

EUROPEAN PHYSICAL JOURNAL C | 2021年 / 81卷 / 09期

基金：

瑞典研究理事会;

关键词：

TOP-QUARK PAIRS; PROTON; TEV;

D O I：

10.1140/epjc/s10052-021-09612-9

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

In this work we investigate the NLO QCD+EW corrections to the top quark pair production and their effects on the spin correlation coefficients and asymmetries at fixed-order top quark pair production and LO decay in the dilepton channel, within the narrow-width approximation. The spin correlations are implicitly measured through the lepton kinematics. Moreover we study the EW effects to the leptonic differential distributions. We find that the EW corrections to the t (t) over bar production are within the NLO QCD theoretical uncertainties for the spin correlation coefficients and the leptonic asymmetries. On the other hand, for the differential distributions we find that the EW corrections exceed the NLO QCD scale uncertainty band in the high rapidity regimes and are of the order of the NLO QCD scale uncertainty in the case of invariant mass and transverse momentum distributions.

引用

页数：11

共 6 条

[1] Search for new physics in rare top decays: t(t)over-bar spin correlations and other observables
Kiers, Ken
Saha, Pratishruti
Szynkman, Alejandro
London, David
Judge, Samuel
Melendez, Jordan
PHYSICAL REVIEW D, 2014, 90 (09):
[2] Forward-Backward Asymmetry in t(t)over-bar Production from Flavor Symmetries
Grinstein, Benjamin
Kagan, Alexander L.
Trott, Michael
Zupan, Jure
PHYSICAL REVIEW LETTERS, 2011, 107 (01)
[3] Measurement of the t(t)over-bar production cross section with an in situ calibration of b-jet identification efficiency
Aaltonen, T.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Appel, J. A.
Apresyan, A.
Arisawa, T.
Artikov, A.
Asaadi, J.
Ashmanskas, W.
Auerbach, B.
Aurisano, A.
Azfar, F.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Barria, P.
Bartos, P.
Bauce, M.
Bauer, G.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Bland, K. R.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Brigliadori, L.
Brisuda, A.
Bromberg, C.
Brucken, E.
Bucciantonio, M.
PHYSICAL REVIEW D, 2011, 83 (07):
[4] Production of b(b)over-bar at forward rapidity in p plus p collisions at √s=510 GeV
Acharya, U.
Adare, A.
Aidala, C.
Ajitanand, N. N.
Akiba, Y.
Akimoto, R.
Alfred, M.
Apadula, N.
Aramaki, Y.
Asano, H.
Atomssa, E. T.
Awes, T. C.
Azmoun, B.
Babintsev, V
Bai, M.
Bandara, N. S.
Bannier, B.
Barish, K. N.
Bathe, S.
Bazilevsky, A.
Beaumier, M.
Beckman, S.
Belmont, R.
Berdnikov, A.
Berdnikov, Y.
Bichon, L.
Black, D.
Blankenship, B.
Bok, J. S.
Borisov, V
Boyle, K.
Brooks, M. L.
Bryslawskyj, J.
Buesching, H.
Bumazhnov, V
Campbell, S.
Roman, V. Canoa
Chen, C-H
Chi, C. Y.
Chiu, M.
Choi, I. J.
Choi, J. B.
Chujo, T.
Citron, Z.
Connors, M.
Csanad, M.
Csorgo, T.
Datta, A.
Daugherity, M. S.
David, G.
PHYSICAL REVIEW D, 2020, 102 (09)
[5] Single-parton scattering versus double-parton scattering in the production of two c(c)over-bar pairs and charmed meson correlations at the LHC
van Hameren, Andreas
Maciula, Rafal
Szczurek, Antoni
PHYSICAL REVIEW D, 2014, 89 (09):
[6] Simple Levy α-Stable Model Analysis of Elastic pp and p(p)over-bar Low-|t| Data from SPS to LHC Energies
Csorgo, Tamas
Hegyi, Sandor
Szanyi, Istvan
UNIVERSE, 2024, 10 (03)

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