scholarly journals SEARCH AND IDENTIFICATION OF EXTRA SPATIAL DIMENSIONS AT LHC

2005 ◽  
Vol 20 (11) ◽  
pp. 2232-2236 ◽  
Author(s):  
ERIK W. DVERGSNES ◽  
PER OSLAND ◽  
ALEXANDER A. PANKOV ◽  
NELLO PAVER
Keyword(s):  
Large Hadron Collider ◽  
Pair Production ◽  
Extra Dimensions ◽  
Hadron Collider ◽  
New Physics ◽  
Lepton Pair ◽  
Cern Large Hadron Collider ◽  
Lepton Pair Production ◽  
Center Edge ◽  
Spatial Dimensions

We present an analysis, based on the center–edge asymmetry, to distinguish effects of extra dimensions within the Arkani-Hamed–Dimopoulos–Dvali (ADD) and Randall–Sundrum (RS) scenarios from other new physics effects in lepton-pair production at the CERN Large Hadron Collider LHC. Spin-2 and spin-1 exchange can be distinguished up to an ADD cutoff scale, MH, of about 5 TeV, at the 95% CL. In the RS scenario, spin-2 resonances can be identified in most of the favored parameter space.

scholarly journals SUPERSYMMETRY VERSUS BLACK HOLES AT THE LHC

2008 ◽  
Vol 23 (35) ◽  
pp. 2987-2996 ◽  
Author(s):  
ARUNAVA ROY ◽  
MARCO CAVAGLIÀ
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Mass Spectrum ◽  
Large Hadron Collider ◽  
Extra Dimensions ◽  
Hadron Collider ◽  
New Physics ◽  
Event Shape ◽  
High Transverse Momentum ◽  
Dilepton Invariant Mass

Supersymmetry and extra dimensions are the two most promising candidates for new physics at the TeV scale. Supersymmetric particles or extra-dimensional effects could soon be observed at the Large Hadron Collider. We propose a simple but effective method to discriminate the two models: the analysis of isolated leptons with high transverse momentum. Black hole events are simulated with the CATFISH black hole generator. Supersymmetry simulations use a combination of PYTHIA and ISAJET, the latter providing the mass spectrum. Our results show that the measure of the dilepton invariant mass provides a promising signature to differentiate supersymmetry and black hole events at the Large Hadron Collider. Analysis of event-shape variables and multilepton events complement and strengthen this conclusion.

scholarly journals Searches for extra spatial dimensions with the CMS detector at the LHC

2015 ◽  
Vol 30 (15) ◽  
pp. 1540017 ◽  
Author(s):  
Greg Landsberg
Keyword(s):  
Hadron Collider ◽  
Center Of Mass ◽  
New Physics ◽  
Current Status ◽  
Beyond The Standard Model ◽  
Cern Large Hadron Collider ◽  
The Standard Model ◽  
Cms Detector ◽  
Spatial Dimensions ◽  
8 Tev

The success of the first three years of operations of the CERN Large Hadron Collider (LHC) at center-of-mass energies of 7 TeV and 8 TeV radically changed the landscape of searches for new physics beyond the Standard Model (BSM) and our very way of thinking about its possible origin and its hiding place. Among the paradigms of new physics that have been probed quite extensively at the LHC, are various models that predict the existence of extra spatial dimensions. In this review, the current status of searches for extra dimensions with the Compact Muon Solenoid (CMS) detector is presented, along with prospects for future searches at the full energy of the LHC, expected to be reached in the next few years.

scholarly journals Electroweak gauge-boson production in association with b jets at Hadron Colliders

2015 ◽  
Vol 30 (16) ◽  
pp. 1530042 ◽  
Author(s):  
F. Febres Cordero ◽  
L. Reina
Keyword(s):  
Large Hadron Collider ◽  
Gauge Boson ◽  
Hadron Collider ◽  
New Physics ◽  
Distribution Functions ◽  
Experimental Measurements ◽  
Cern Large Hadron Collider ◽  
Electroweak Gauge Boson ◽  
Theoretical Predictions ◽  
B Quark

The production of both charged and neutral electroweak gauge bosons in association with b jets has attracted a lot of experimental and theoretical attention in recent years because of its central role in the physics programs of both the Fermilab Tevatron and the CERN Large Hadron Collider. The improved level of accuracy achieved both in the theoretical predictions and experimental measurements of these processes can promote crucial developments in modeling b-quark jets and b-quark parton distribution functions, and can provide a more accurate description of some of the most important backgrounds to the measurement of Higgs-boson couplings and several new physics searches. In this paper, we review the status of theoretical predictions for cross sections and kinematic distributions of processes in which an electroweak gauge boson is produced in association with up to two b jets in hadronic collisions, namely [Formula: see text], pp → V + 1b jet and [Formula: see text], pp → V + 2b jets with V = W±, Z/γ*, γ. Available experimental measurements at both the Fermilab Tevatron and the CERN Large Hadron Collider are also reviewed and their comparison with theoretical predictions is discussed.

scholarly journals MEASUREMENT AND INTERPRETATION OF LEPTON-PAIR PRODUCTION AT LEP2 ENERGIES

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 336-338
Author(s):  
ANETTE BEHRMANN
Keyword(s):  
Pair Production ◽  
Cross Sections ◽  
Preliminary Analysis ◽  
Center Of Mass ◽  
New Physics ◽  
Lepton Pair ◽  
Lepton Pair Production ◽  
Delphi Detector ◽  
The Standard Model ◽  
Model Predictions

A preliminary analysis of the lepton-pair production in e+e- annihilations at LEP2 center-of-mass energies using the data collected between 130 GeV and LEP2 highest energies (i.e. exceeding 205 GeV) with the DELPHI detector is presented. The values obtained for the cross-sections and forword-backward asymmetries are used to test the Standard Model predictions and to derive limits for possible new physics phenomena beyond it.

Large transverse momentum lepton pair production at the Large Hadron Collider

Open Physics ◽  
2011 ◽  
Vol 9 (6) ◽  
Author(s):  
Rui-tao Yin ◽  
Yong-ping Fu ◽  
Yun-de Li
Keyword(s):  
Transverse Momentum ◽  
Large Hadron Collider ◽  
Single Photon ◽  
Hadron Collider ◽  
Heavy Ion ◽  
Lepton Pair ◽  
Large Transverse Momentum ◽  
Lepton Pairs ◽  
Lepton Pair Production ◽  
Photon Process

AbstractWe study the large transverse momentum distribution of lepton pairs produced in heavy-ion collisions, making use of the perturbative QCD. Referring to the calculation of the parton-parton production process into lepton pairs at the Relativistic Heavy Ion Collider (RHIC), the production of lepton pairs at large transverse momentum is extended to the Large Hadron Collider (LHC). The contribution of the parton-parton production process into lepton pairs in Pb-Pb collisions at the LHC is calculated, including the complete processes at large transverse momentum. Lepton pair production with the direct single photon process and the resolved single photon process are considered and confirmed to be significant at the LHC.

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