scholarly journals Searching for dark matter at hadron colliders

2014 ◽  
Vol 29 (23) ◽  
pp. 1430041 ◽  
Author(s):  
Andrew Askew ◽  
Sushil Chauhan ◽  
Björn Penning ◽  
William Shepherd ◽  
Mani Tripathi
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Hadron Collider ◽  
Effective Field ◽  
Current Status ◽  
Hadron Colliders ◽  
Proton Proton ◽  
Proton Collisions ◽  
8 Tev ◽  
Proton Proton Collisions

Theoretical and experimental techniques employed in dedicated searches for dark matter at hadron colliders are reviewed. Bounds from the 7 TeV and 8 TeV proton–proton collisions at the Large Hadron Collider (LHC) on dark matter interactions have been collected and the results interpreted. We review the current status of the Effective Field Theory picture of dark matter interactions with the Standard Model. Currently, LHC experiments have stronger bounds on operators leading to spin-dependent scattering than direct detection experiments, while direct detection probes are more constraining for spin-independent scattering for WIMP masses above a few GeV.

scholarly journals Search for dark matter particles in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV using the razor variables

2016 ◽  
Vol 2016 (12) ◽  
Author(s):  
V. Khachatryan ◽  
◽  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
...  
Keyword(s):  
Dark Matter ◽  
Proton Proton ◽  
Proton Collisions ◽  
8 Tev ◽  
Proton Proton Collisions

scholarly journals Collider Searches for Dark Matter (ATLAS + CMS)

Universe ◽  
2018 ◽  
Vol 4 (11) ◽  
pp. 131 ◽  
Author(s):  
Nicolò Trevisani
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Direct Detection ◽  
Hadron Collider ◽  
Center Of Mass ◽  
Interaction Cross Section ◽  
Proton Proton ◽  
Mass Distributions ◽  
Center Of Mass Energy ◽  
Proton Proton Collisions

Several searches for dark matter have been performed by the CMS and ATLAS collaborations, using proton-proton collisions with a center-of-mass energy of 13 TeV produced by the Large Hadron Collider. Different signatures may highlight the presence of dark matter: the imbalance in the transverse momentum in an event due to the presence of undetectable dark matter particles, produced together with one Standard Model particle, a bump in the di-jet or di-lepton invariant mass distributions, or an excess of events in the di-jet angular distribution, produced by a dark matter mediator. No significant discrepancies with respect to the Standard Model predictions have been found in data, so that limits on the dark matter couplings to ordinary matter, or limits on the dark matter particles and mediators masses have been set. The results are also re-interpreted as limits on the dark matter interaction cross-section with baryonic matter, so that a comparison with direct detection experiments is allowed.

scholarly journals Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

2017 ◽  
Vol 2017 (3) ◽  
Author(s):  
A. M. Sirunyan ◽  
◽  
A. Tumasyan ◽  
W. Adam ◽  
E. Asilar ◽  
...  
Keyword(s):  
Dark Matter ◽  
Transverse Momentum ◽  
Effective Field Theories ◽  
Z Boson ◽  
Effective Field ◽  
Field Theories ◽  
Proton Proton ◽  
Proton Collisions ◽  
Missing Transverse Momentum ◽  
Proton Proton Collisions

Abstract A search for dark matter and unparticle production at the LHC has been performed using events containing two charged leptons (electrons or muons), consistent with the decay of a Z boson, and large missing transverse momentum. This study is based on data collected with the CMS detector in 2015, corresponding to an integrated luminosity of 2.3 fb−1 of proton-proton collisions at the LHC, at a center-of-mass energy of 13 TeV. No excess over the standard model expectation is observed. Compared to previous searches in this topology, which exclusively relied on effective field theories, the results are interpreted in terms of a simplified model of dark matter production for both vector and axial vector couplings between a mediator and dark matter particles. The first study of this class of models using CMS data at $$ \sqrt{s}=13 $$ s = 13 TeV is presented. Additionally, effective field theories of dark matter and unparticle production are used to interpret the data.

scholarly journals Search for dark matter and unparticles produced in association with a Z boson in proton-proton collisions at s=8  TeV

2016 ◽  
Vol 93 (5) ◽  
Author(s):  
V. Khachatryan ◽  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
E. Asilar ◽  
...  
Keyword(s):  
Dark Matter ◽  
Z Boson ◽  
Proton Proton ◽  
Proton Collisions ◽  
8 Tev ◽  
Proton Proton Collisions
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