scholarly journals Matching NNLO predictions to parton showers using N3LL color-singlet transverse momentum resummation in geneva

2021 ◽  
Vol 104 (9) ◽  
Author(s):  
Simone Alioli ◽  
Alessandro Broggio ◽  
Alessandro Gavardi ◽  
Stefan Kallweit ◽  
Matthew A. Lim ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Color Singlet

scholarly journals Production of ηQ meson at LHC

2015 ◽  
Vol 30 (07) ◽  
pp. 1550032 ◽  
Author(s):  
A. K. Likhoded ◽  
A. V. Luchinsky ◽  
S. V. Poslavsky
Keyword(s):  
Experimental Data ◽  
Matrix Element ◽  
Transverse Momentum ◽  
Theoretical Prediction ◽  
Cross Sections ◽  
Meson Production ◽  
Color Singlet ◽  
Momentum Distributions ◽  
Lhcb Detector ◽  
Singlet Component

The paper is devoted to theoretical consideration of inclusive ηc, b meson production at LHC. It is shown that existing experimental data on ηc meson production at LHCb detector can be described in the framework of NRQCD formalism and color singlet component with phenomenological value of matrix element |R(0)|2 gives main contribution. Using this model, we present theoretical prediction for integrated cross-sections and transverse momentum distributions for inclusive ηc production at other LHC detectors. The case of ηb meson production at LHC is also considered.

HIGH TRANSVERSE MOMENTUM PROCESSES

1973 ◽  
Vol 34 (C1) ◽  
pp. C1-385-C1-399 ◽  
Author(s):  
J. D. BJORKEN
Keyword(s):  
Transverse Momentum ◽  
High Transverse Momentum

scholarly journals Search for new phenomena in final states with b-jets and missing transverse momentum in $$ \sqrt{\mathrm{s}} $$ = 13 TeV pp collisions with the ATLAS detector

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
G. Aad ◽  
◽  
B. Abbott ◽  
D. C. Abbott ◽  
A. Abed Abud ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Pair Production ◽  
Atlas Detector ◽  
Final States ◽  
Proton Proton ◽  
Missing Transverse Momentum ◽  
The Standard Model ◽  
Proton Data ◽  
Identification Techniques ◽  
New Phenomena

Abstract The results of a search for new phenomena in final states with b-jets and missing transverse momentum using 139 fb−1 of proton-proton data collected at a centre-of-mass energy $$ \sqrt{s} $$ s = 13 TeV by the ATLAS detector at the LHC are reported. The analysis targets final states produced by the decay of a pair-produced supersymmetric bottom squark into a bottom quark and a stable neutralino. The analysis also seeks evidence for models of pair production of dark matter particles produced through the decay of a generic scalar or pseudoscalar mediator state in association with a pair of bottom quarks, and models of pair production of scalar third-generation down-type leptoquarks. No significant excess of events over the Standard Model background expectation is observed in any of the signal regions considered by the analysis. Bottom squark masses below 1270 GeV are excluded at 95% confidence level if the neutralino is massless. In the case of nearly mass-degenerate bottom squarks and neutralinos, the use of dedicated secondary-vertex identification techniques permits the exclusion of bottom squarks with masses up to 660 GeV for mass splittings between the squark and the neutralino of 10 GeV. These limits extend substantially beyond the regions of parameter space excluded by similar ATLAS searches performed previously.

scholarly journals Collinear expansion for color singlet cross sections

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Markus A. Ebert ◽  
Bernhard Mistlberger ◽  
Gherardo Vita
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Production Cross ◽  
Gluon Fusion ◽  
Building Blocks ◽  
Color Singlet ◽  
Final State ◽  
Beam Function ◽  
Kinematic Limit ◽  
State Radiation

Abstract We demonstrate how to efficiently expand cross sections for color-singlet production at hadron colliders around the kinematic limit of all final state radiation being collinear to one of the incoming hadrons. This expansion is systematically improvable and applicable to a large class of physical observables. We demonstrate the viability of this technique by obtaining the first two terms in the collinear expansion of the rapidity distribution of the gluon fusion Higgs boson production cross section at next-to-next-to leading order (NNLO) in QCD perturbation theory. Furthermore, we illustrate how this technique is used to extract universal building blocks of scattering cross section like the N-jettiness and transverse momentum beam function at NNLO.

ResBos and ePump Analysis on ATLAS 8TeV Z Boson Transverse Momentum Distributions

2021 ◽  
Author(s):  
Qaynar Jandaolet ◽  
Alim Ablat ◽  
Pazilet Obul ◽  
Reyima Rashidin ◽  
Ibrahim Sitiwaldi
Keyword(s):  
Transverse Momentum ◽  
Z Boson ◽  
Momentum Distributions
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