The Construction of a High-Energy Collider

2017 ◽  
Vol 5 (1) ◽  
pp. 62-80
Author(s):  
Gerard ’t Hooft ◽  
David Gross ◽  
Hong-Jian He ◽  
Yifang Wang ◽  
Shing-Tung Yau
Keyword(s):  
High Energy ◽  
High Energy Collider

INELASTIC PHOTOPRODUCTION OF W-BOSON

1998 ◽  
Vol 13 (25) ◽  
pp. 2013-2020
Author(s):  
S. M. KHAIRUL ALAM ◽  
A. M. HARUN AR RASHID
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
W Boson ◽  
Electric Quadrupole ◽  
Parton Model ◽  
High Energy ◽  
Electric Quadrupole Moment ◽  
Photoproduction Process ◽  
Quark Parton Model ◽  
High Energy Collider

We study the WWγ vertex through the process γq→Wq′ where q denotes the quark at a future high energy collider. The differential cross-section for the photoproduction process γq→Wq′ is computed with both anomalous magnetic moment κ and electric quadrupole moment λ for the W-boson. The deep inelastic photoproduction of W± is also calculated in a quark-parton model.

scholarly journals High energy collider physics. Final report

1997 ◽  
Author(s):  
R.C. Ruchti ◽  
N.N. Biswas ◽  
M.R. Wayne
Keyword(s):  
High Energy ◽  
Final Report ◽  
Collider Physics ◽  
High Energy Collider

scholarly journals ColliderBit: a GAMBIT module for the calculation of high-energy collider observables and likelihoods

2017 ◽  
Vol 77 (11) ◽  
Author(s):  
Csaba Balázs ◽  
◽  
Andy Buckley ◽  
Lars A. Dal ◽  
Ben Farmer ◽  
...  
Keyword(s):  
High Energy ◽  
High Energy Collider

ANALYTIC EXPRESSIONS OF CROSS SECTIONS, ASYMMETRIES AND W DENSITY MATRICES FOR e+e− → W+W− WITH GENERAL THREE-BOSON COUPLINGS

1993 ◽  
Vol 08 (19) ◽  
pp. 3285-3320 ◽  
Author(s):  
G. GOUNARIS ◽  
J. LAYSSAC ◽  
G. MOULTAKA ◽  
F. M. RENARD
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
Spin Density Matrix ◽  
Matrix Elements ◽  
Density Matrices ◽  
Independent Analysis ◽  
Analytic Expressions ◽  
Complete Set ◽  
Model Independent ◽  
High Energy Collider

We establish explicit analytic expressions for the e+e− → W+W− cross sections, asymmetries and W± spin density matrix elements in terms of the complete set of anomalous three-boson couplings. This should be useful for performing a model-independent analysis of LEP 2 or future high energy collider data. Sensitivities to the various three-boson couplings are discussed and possible ways to disentangle their effects are proposed.

scholarly journals A PROBLEM IN VIRTUAL GRAVITON EXCHANGES IN FLAT LARGE EXTRA DIMENSIONS

2010 ◽  
Vol 25 (23) ◽  
pp. 4511-4523
Author(s):  
HARUKA NAMATAME
Keyword(s):  
Cross Sections ◽  
Extra Dimensions ◽  
Large Extra Dimensions ◽  
High Energy ◽  
Momentum Conservation ◽  
More Care ◽  
High Energy Collider ◽  
The Cross ◽  
Shell Production ◽  
Kaluza Klein

It is pointed out in a class of models with large extra dimensions that the cross-section of processes with virtual Kaluza–Klein graviton exchanges becomes either much smaller or much larger by many orders of magnitude than what is expected from that of the on-shell production of the Kaluza–Klein gravitons. We demonstrate how the problem arises using a toy model. The cause of this new problem lies in the fact that we do not have momentum conservation in the extra dimensions. To search for the signal of the large extra dimensions with high energy collider experiments, we need more care in interpreting the earlier results on the cross-sections of these processes.

scholarly journals HECATE

2021 ◽  
Vol 81 (6) ◽  
Author(s):  
Marcin Chrząszcz ◽  
Marco Drewes ◽  
Jan Hajer
Keyword(s):  
Civil Engineering ◽  
Hadron Collider ◽  
High Energy ◽  
Next Generation ◽  
Mixing Parameter ◽  
Order Of Magnitude ◽  
High Energy Collider

AbstractThe next generation of circular high energy collider is expected to be a lepton collider, FCC-ee at CERN or CEPC in China. However, the civil engineering concepts foresee to equip these colliders with bigger detector caverns than one would need for a lepton collider, so that they can be used for a hadron collider that may be installed in the same tunnel without further civil engineering. This opens up the possibility to install extra instrumentation at the cavern walls to search for new long-lived particles at the lepton collider. We use the example of heavy neutral leptons to show that such an installation could improve the sensitivity to the squared mixing parameter by almost half an order of magnitude.

scholarly journals Event generation with Sherpa 2.2

2019 ◽  
Vol 7 (3) ◽  
Author(s):  
Enrico Bothmann ◽  
Gurpreet Singh Chahal ◽  
Stefan Höche ◽  
Johannes Krause ◽  
Frank Krauss ◽  
...  
Keyword(s):  
Monte Carlo ◽  
High Energy ◽  
General Purpose ◽  
Particle Collision ◽  
Monte Carlo Event ◽  
Event Generator ◽  
Particle Collisions ◽  
Monte Carlo Event Generator ◽  
Event Generation ◽  
High Energy Collider

Sherpa is a general-purpose Monte Carlo event generator for the simulation of particle collisions in high-energy collider experiments. We summarise essential features and improvements of the Sherpa 2.2 release series, which is heavily used for event generation in the analysis and interpretation of LHC Run 1 and Run 2 data. We highlight a decade of developments towards ever higher precision in the simulation of particle-collision events.

scholarly journals STUDIES AND APPLICATION OF BENT CRYSTALS FOR BEAM STEERING AT 70 GEV IHEP ACCELERATOR

2010 ◽  
Vol 25 (supp01) ◽  
pp. 86-97
Author(s):  
A.G. AFONIN ◽  
V.T. BARANOV ◽  
G.I. BRITVICH ◽  
V.N. CHEPEGIN ◽  
YU.A. CHESNOKOV ◽  
...  
Keyword(s):  
Beam Steering ◽  
High Energy ◽  
Proton Synchrotron ◽  
Beam Extraction ◽  
Reflection Effect ◽  
Light Ions ◽  
Volume Reflection ◽  
High Energy Collider ◽  
Major Attention ◽  
Bent Crystals

This report overviews studies accomplished in the U70 proton synchrotron of IHEP-Protvino during the recent two decades. Major attention is paid to a routine application of bent crystals for beam extraction from the machine. It has been confirmed experimentally that efficiency of beam extraction with a crystal deflector of around 85% is well feasible for a proton beam with intensity up to 1012 protons per cycle. Another trend is to use bent crystals for halo collimation in a high energy collider. New promising options emerge for, say, LHC and ILC based on the "volume reflection" effect, which has been discovered recently in machine study runs at U70 of IHEP (50 GeV) and SPS of CERN (400 GeV). Perspectives to use bent crystals for extraction of light ions from the U70 accelerator are also disclosed.

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