NLO K factors for ZZ double vector boson pairs in proton–proton collisions

2018 ◽  
Vol 33 (26) ◽  
pp. 1850153
Author(s):  
Kamuran Dilsiz
Keyword(s):  
Z Boson ◽  
Vector Boson ◽  
Higher Order ◽  
Boson Mass ◽  
Matrix Elements ◽  
Proton Proton ◽  
Proton Collisions ◽  
Order Matrix ◽  
The Impact ◽  
Proton Proton Collisions

The impact of higher-order matrix elements and [Formula: see text] and [Formula: see text] scales on the NLO K factors for ZZ vector boson pairs in proton–proton collisions are presented in this study. All predictions are performed using MCFM-8.0 Monte Carlo generator. First, the QCD predictions of ZZ production at LO and NLO accuracies are obtained using two most recent PDFs, MMHT2014 and CT14. To discuss the impact of higher-order matrix elements on the NLO K factors, both LO and NLO corrections are obtained by LO, NLO and NNLO matrix elements of these two most recent PDFs. Then, the impact of [Formula: see text] and [Formula: see text] scales on the NLO K factors are further discussed by using six different values of [Formula: see text] and [Formula: see text] in a range of [Formula: see text], [Formula: see text], where [Formula: see text] is Z boson mass.

scholarly journals Measurement of the underlying event activity in inclusive Z boson production in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV

2018 ◽  
Vol 2018 (7) ◽  
Author(s):  
A. M. Sirunyan ◽  
◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
...  
Keyword(s):  
Z Boson ◽  
Boson Production ◽  
Underlying Event ◽  
Proton Proton ◽  
Proton Collisions ◽  
Proton Proton Collisions

scholarly journals Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV

2018 ◽  
Vol 781 ◽  
pp. 574-600 ◽  
Author(s):  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
E. Asilar ◽  
...  
Keyword(s):  
Top Quark ◽  
Z Boson ◽  
Proton Proton ◽  
Proton Collisions ◽  
Single Production ◽  
Proton Proton Collisions

scholarly journals Cross Section Prediction for Inclusive Production of Z Boson in pp Collisions at s=14 TeV: A Study of Systematic Uncertainty due to Scale Dependence

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Hasan Ogul ◽  
Kamuran Dilsiz
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Z Boson ◽  
Production Cross ◽  
Branching Ratio ◽  
Leading Order ◽  
Proton Proton ◽  
Proton Collisions ◽  
Central Values ◽  
Proton Proton Collisions

Prediction of Z→l+l- production cross section (where l±=e±,μ±) in proton-proton collisions at s=14 TeV is estimated up to next-to-next-to-leading order (NNLO) in perturbative QCD including next-to-leading order (NLO) electroweak (EW) corrections. The total inclusive Z boson production cross section times leptonic branching ratio, within the invariant mass window 66<mll<116 GeV, is predicted using NNLO HERAPDF2.0 at NNLO QCD and NLO EW as σZTot=2111.69-26.92+26.31 (PDF) ±11 (αs) ±17 (scale) -30.98+57.41 (parameterization and model). Theoretical prediction of the fiducial cross section is further computed with the latest modern PDF models (CT14, MMHT2014, NNPDF3.0, HERAPDF2.0, and ABM12) at NNLO for QCD and NLO for EW. The central values of the predictions are based on DYNNLO 1.5 program and the uncertainties are extracted using FEWZ 3.1 program. In addition, the cross section is also calculated as functions of μR and μF scales. The choice of μR and μF for scale variation uncertainty is further discussed in detail.

scholarly journals Test of CP invariance in vector-boson fusion production of the Higgs boson in the H → ττ channel in proton–proton collisions at s=13TeV with the ATLAS detector

2020 ◽  
Vol 805 ◽  
pp. 135426
Author(s):  
G. Aad ◽  
B. Abbott ◽  
D.C. Abbott ◽  
A. Abed Abud ◽  
K. Abeling ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Vector Boson ◽  
Atlas Detector ◽  
Vector Boson Fusion ◽  
Proton Proton ◽  
Proton Collisions ◽  
Proton Proton Collisions ◽  
Cp Invariance

scholarly journals Nonperturbative Uncertainties on the Transverse Momentum Distribution of Electroweak Bosons and on the Determination of the W Boson Mass at the LHC

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Giuseppe Bozzi ◽  
Andrea Signori
Keyword(s):  
Transverse Momentum ◽  
W Boson ◽  
Direct Determination ◽  
Boson Mass ◽  
Proton Proton ◽  
Theoretical Predictions ◽  
Quark Transverse Momentum ◽  
The Impact ◽  
Proton Proton Collisions

In this contribution we present an overview of recent results concerning the impact of a possible flavour dependence of the intrinsic quark transverse momentum on electroweak observables. In particular, we focus on the qT spectrum of electroweak gauge bosons produced in proton-proton collisions at the LHC and on the direct determination of the W boson mass. We show that these effects are comparable in size to other nonperturbative effects commonly included in phenomenological analyses and should thus be included in precise theoretical predictions for present and future hadron colliders.

scholarly journals Measurement of electroweak production of two jets in association with a Z boson in proton–proton collisions at $$\sqrt{s}=8\,\text {TeV}$$ s = 8 TeV

2015 ◽  
Vol 75 (2) ◽  
Author(s):  
V. Khachatryan ◽  
◽  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
...  
Keyword(s):  
Z Boson ◽  
Proton Proton ◽  
Proton Collisions ◽  
8 Tev ◽  
Two Jets ◽  
Proton Proton Collisions

scholarly journals Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at s=13  TeV

2020 ◽  
Vol 102 (3) ◽  
Author(s):  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
T. Bergauer ◽  
...  
Keyword(s):  
Z Boson ◽  
Bottom Quark ◽  
Proton Proton ◽  
Proton Collisions ◽  
Associated Production ◽  
Quark Jets ◽  
Proton Proton Collisions

scholarly journals Measurement of the production cross-section of a single top quark in association with a Z boson in proton–proton collisions at 13 TeV with the ATLAS detector

2018 ◽  
Vol 780 ◽  
pp. 557-577 ◽  
Author(s):  
M. Aaboud ◽  
G. Aad ◽  
B. Abbott ◽  
O. Abdinov ◽  
B. Abeloos ◽  
...  
Keyword(s):  
Cross Section ◽  
Top Quark ◽  
Production Cross Section ◽  
Z Boson ◽  
Production Cross ◽  
Atlas Detector ◽  
Proton Proton ◽  
Proton Collisions ◽  
Single Top ◽  
Proton Proton Collisions
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