Measurement of W-boson charge asymmetry with the CMS experiment

2013 ◽  
Vol 234 ◽  
pp. 89-92
Author(s):  
Anirban Saha
Keyword(s):  
W Boson ◽  
Charge Asymmetry ◽  
Cms Experiment

scholarly journals Electroweak measurements from W, Z and photon final states

2014 ◽  
Vol 31 ◽  
pp. 1460276
Author(s):  
Hang Yin ◽  
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Z Boson ◽  
W Boson ◽  
Charge Asymmetry ◽  
Distribution Functions ◽  
Boson Mass ◽  
Electroweak Theory ◽  
Final States ◽  
Parton Distribution Functions

We present the most recent precision electroweak measurements of single W and Z boson cross section and properties from the LHC and Tevatron colliders, analyzing data collected by ATLAS, CDF, CMS, D0, and LHCb detectors. The results include the measurement of the single W and Z boson cross section at LHC, the differential cross section measurements, the measurement of W boson mass, the measurement of W and Z charge asymmetry. These measurements provide precision tests on the electroweak theory, high order predictions and the information can be used to constraint parton distribution functions.

scholarly journals Top quark studies with the ATLAS detector

2015 ◽  
Vol 39 ◽  
pp. 1560092
Author(s):  
Marcella Capua
Keyword(s):  
Pair Production ◽  
Cross Sections ◽  
Top Quark ◽  
W Boson ◽  
Production Cross ◽  
Charge Asymmetry ◽  
Atlas Detector ◽  
Top Quark Production ◽  
Top Pair Production ◽  
8 Tev

The latest top quark studies in proton-proton collisions at a centre-of-mass energy of 7 and 8 TeV with the ATLAS detector are reported. We present recent results on the top pair production inclusive cross-sections, top pair production differential cross-section in the resolved and boosted regimes, single top-quark production cross-sections measured in the t-channel, s-channel and W-boson associated processes, as well as the determination of the CKM matrix element [Formula: see text]. The results are compared with theoretical expectations. Latest ATLAS results on top properties will be also shown in terms of direct and pole mass, spin correlations and charge asymmetry.

Inclusive W boson QCD predictions and lepton charge asymmetry in proton–proton collisions at = 14 TeV

2018 ◽  
Vol 96 (9) ◽  
pp. 1029-1033
Author(s):  
Kamuran Dilsiz ◽  
Emrah Tiras
Keyword(s):  
Cross Section ◽  
W Boson ◽  
Charge Asymmetry ◽  
Detailed Comparison ◽  
Leading Order ◽  
Proton Proton ◽  
Proton Collisions ◽  
Lepton Charge ◽  
8 Tev ◽  
Proton Proton Collisions

Inclusive W ([Formula: see text]) boson QCD predictions and lepton charge asymmetry in proton–proton collisions at [Formula: see text] = 14 TeV is performed in this study. Total and fiducial cross section predictions are obtained up to next to next to leading order (NNLO) QCD corrections using Monte Carlo for FeMtobarn processes (MCFM) MC generator. To validate the predictions, a detailed comparison of NNLO QCD calculations with 8 TeV CMS results is performed. To discuss the advantage of the higher order QCD predictions on the scale uncertainty, a scale dependence study is presented based on the choice of renormalization (μR) and factorization (μF) scale variations. W boson – lepton charge asymmetry and differential cross section as a function of lepton pseudorapidity at [Formula: see text] = 14 TeV are further performed in 11 |η| regions.

scholarly journals Search for the lepton flavor violating decay τ → 3μ in proton-proton collisions at $$ \sqrt{\mathrm{s}} $$ = 13 TeV

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
A. M. Sirunyan ◽  
◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
...  
Keyword(s):  
W Boson ◽  
Branching Fraction ◽  
Heavy Flavor ◽  
Significant Excess ◽  
Proton Proton ◽  
Proton Collisions ◽  
Lepton Flavor ◽  
Cms Experiment ◽  
Upper Limit ◽  
Proton Proton Collisions

Abstract Results are reported from a search for the lepton flavor violating decay τ → 3μ in proton-proton collisions at $$ \sqrt{\mathrm{s}} $$ s = 13 TeV. The data sample corresponds to an integrated luminosity of 33.2 fb−1 recorded by the CMS experiment at the LHC in 2016. The search exploits τ leptons produced in both W boson and heavy-flavor hadron decays. No significant excess above the expected background is observed. An upper limit on the branching fraction ℬ(τ → 3μ) of 8.0 × 10−8 at 90% confidence level is obtained, with an expected upper limit of 6.9 × 10−8.

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