scholarly journals Resummation ambiguities in the Higgs transverse-momentum spectrum in the Standard Model and beyond

2016 ◽  
Vol 2016 (1) ◽  
Author(s):  
E. Bagnaschi ◽  
R. V. Harlander ◽  
H. Mantler ◽  
A. Vicini ◽  
M. Wiesemann
Keyword(s):  
Transverse Momentum ◽  
Standard Model ◽  
Momentum Spectrum ◽  
Transverse Momentum Spectrum ◽  
The Standard Model

scholarly journals Search for dark matter in association with an energetic photon in pp collisions at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
G. Aad ◽  
◽  
B. Abbott ◽  
D. C. Abbott ◽  
A. Abed Abud ◽  
...  
Keyword(s):  
Dark Matter ◽  
Transverse Momentum ◽  
Standard Model ◽  
Confidence Level ◽  
Axial Vector ◽  
Beyond The Standard Model ◽  
Proton Proton ◽  
Missing Transverse Momentum ◽  
Upper Limits ◽  
The Standard Model

Abstract A search for dark matter is conducted in final states containing a photon and missing transverse momentum in proton-proton collisions at $$ \sqrt{s} $$ s = 13 TeV. The data, collected during 2015–2018 by the ATLAS experiment at the CERN LHC, correspond to an integrated luminosity of 139 fb−1. No deviations from the predictions of the Standard Model are observed and 95% confidence-level upper limits between 2.45 fb and 0.5 fb are set on the visible cross section for contributions from physics beyond the Standard Model, in different ranges of the missing transverse momentum. The results are interpreted as 95% confidence-level limits in models where weakly interacting dark-matter candidates are pair-produced via an s-channel axial-vector or vector mediator. Dark-matter candidates with masses up to 415 (580) GeV are excluded for axial-vector (vector) mediators, while the maximum excluded mass of the mediator is 1460 (1470) GeV. In addition, the results are expressed in terms of 95% confidence-level limits on the parameters of a model with an axion-like particle produced in association with a photon, and are used to constrain the coupling gaZγ of an axion-like particle to the electroweak gauge bosons.

scholarly journals H1jet, a fast program to compute transverse momentum distributions

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Alexander Lind ◽  
Andrea Banfi
Keyword(s):  
Transverse Momentum ◽  
Standard Model ◽  
Total Cross Section ◽  
Cross Section ◽  
New Physics ◽  
Leading Order ◽  
Current Version ◽  
Differential Distribution ◽  
The Standard Model ◽  
Momentum Distributions

AbstractWe present H1jet, a fast code that computes the total cross section and differential distribution in the transverse momentum of a colour singlet. In its current version, the program implements only leading-order $$2\rightarrow 1$$ 2 → 1 and $$2\rightarrow 2$$ 2 → 2 processes, but could be extended to higher orders. We discuss the processes implemented in H1jet, give detailed instructions on how to implement new processes, and perform comparisons to existing codes. This tool, mainly designed for theorists, can be fruitfully used to assess deviations of selected new physics models from the Standard Model behaviour, as well as to quickly obtain distributions of relevance for Standard Model phenomenology.

scholarly journals Effect of in-medium mass-shift on transverse-momentum spectrum and elliptic anisotropy of ϕ meson

2020 ◽  
Vol 29 (07) ◽  
pp. 2050047
Author(s):  
Yong Zhang ◽  
Jing Yang ◽  
Weihua Wu
Keyword(s):  
Transverse Momentum ◽  
Collision Energy ◽  
Elliptic Flow ◽  
Momentum Spectrum ◽  
Mass Shift ◽  
Large Momentum ◽  
Transverse Momentum Spectrum ◽  
Medium Mass ◽  
Different Sources ◽  
Momentum Region

We study the effect of in-medium mass-shift on transverse-momentum spectrum and elliptic anisotropy of [Formula: see text] meson. It is found that the mass-shift enhances the [Formula: see text] yields and suppresses the elliptic flow [Formula: see text] in large momentum region, and the effects increase with the increasing mass-shift. The effects are various for different sources and decrease with the increasing collision energy. We further study the effects for parts of all [Formula: see text] meson with mass-shift, and the effects decrease with the decreasing probability of [Formula: see text] meson with mass-shift. A possible method to detect the mass-shift of [Formula: see text] meson via transverse-momentum spectrum and [Formula: see text] is proposed.

scholarly journals The Zγ transverse-momentum spectrum at NNLO+N3LL

2020 ◽  
Vol 809 ◽  
pp. 135718 ◽  
Author(s):  
Marius Wiesemann ◽  
Luca Rottoli ◽  
Paolo Torrielli
Keyword(s):  
Transverse Momentum ◽  
Momentum Spectrum ◽  
Transverse Momentum Spectrum

scholarly journals Precise QCD description of the Higgs boson transverse momentum spectrum

2019 ◽  
Vol 788 ◽  
pp. 425-430 ◽  
Author(s):  
Xuan Chen ◽  
Thomas Gehrmann ◽  
E.W. Nigel Glover ◽  
Alexander Huss ◽  
Ye Li ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Transverse Momentum ◽  
Momentum Spectrum ◽  
Transverse Momentum Spectrum
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