scholarly journals PROSPECTS OF MEDIUM TOMOGRAPHY USING 2-, 3- AND 4-PARTICLE CORRELATIONS FOR A (SEMI)-HARD TRIGGER

2007 ◽  
Vol 16 (10) ◽  
pp. 3100-3107 ◽  
Author(s):  
THORSTEN RENK ◽  
JÖRG RUPPERT
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Dense Matter ◽  
Correlation Pattern ◽  
Proton Proton ◽  
Conservation Of Energy ◽  
Proton Collisions ◽  
Hadron Spectra ◽  
Proton Proton Collisions ◽  
Nucleus Nucleus Collision

Hard partons propagating through hot and dense matter lose energy, leading to the observed depletion of hard hadron spectra in nucleus nucleus collision as compared to scaled proton proton collisions. This lost energy has to be redistributed in the medium due to the conservation of energy, which is manifest in the pT dependence of the angular correlation pattern of hadrons associate with a (semi-) hard trigger. While at low pT a splitting of a broad peak is observed, at high pT the structure shows vacuum width, albeit with reduced yield. This sugests a transfer of energy from hard partons to a collectively recoiling medium. We present a systematic study of these phenomena using a realistic medium evolution and a Monte-Carlo simulation of the experimental trigger and show what information about the medium can be derived from multiparticle correlations.

scholarly journals Measurement of the Forward-Backward Asymmetry in the Drell-Yan Dilepton Production in Proton-Proton Collisions at the CMS Experiment at the LHC

2018 ◽  
Vol 177 ◽  
pp. 04010 ◽  
Author(s):  
V. Shalaev ◽  
I. Gorbunov ◽  
S. Shmatov
Keyword(s):  
Monte Carlo ◽  
Charged Lepton ◽  
Dilepton Production ◽  
Lepton Pairs ◽  
Proton Proton ◽  
Proton Collisions ◽  
Cms Experiment ◽  
8 Tev ◽  
Proton Proton Collisions ◽  
Oppositely Charged

In this paper we review the results of a measurement of the forward-backward asymmetry of oppositely charged lepton pairs produced via Z/γ* boson in pp collisions during the LHC Run 1 at √s = 8 TeV with integrated luminosity 19.1 fb-1 (2012). We also present our preliminary results obtained with Monte Carlo samples at √s = 13 TeV

scholarly journals CHARGED PARTICLES PRODUCED IN QUARK AND GLUON JETS IN PROTON-PROTON COLLISIONS

2011 ◽  
Vol 20 (07) ◽  
pp. 1583-1587
Author(s):  
SONA POCHYBOVA
Keyword(s):  
Particle Production ◽  
Current Knowledge ◽  
Charged Particles ◽  
Minimum Bias ◽  
Proton Proton ◽  
Proton Collisions ◽  
Hadron Spectra ◽  
Gluon Jets ◽  
Proton Proton Collisions ◽  
Existing Data

The study of particle production inside jets makes it possible to address the fragmentation properties of the leading parton depending on its flavour. We study the spectra of K, p and π production in minimum bias (inelastic, non- diffractive), two- and three-jet events at RHIC, Tevatron and LHC energies. To address the properties of quark and gluon jets, different production channels are investigated. We present MC estimate for the contribution of quark and gluon jets to individual hadron spectra, that can be compared to experimental results and test our current knowledge of the physics behind particle production inside jets. Where possible, we cross-check our results with existing data and further extend the study to higher energies.

scholarly journals Measurement of $$K_S^0$$ and $$\Lambda ^0$$ production in $$t \bar{t}$$ dileptonic events in pp collisions at $$\sqrt{s} =$$ 7 TeV with the ATLAS detector

2019 ◽  
Vol 79 (12) ◽  
Author(s):  
G. Aad ◽  
◽  
B. Abbott ◽  
D. C. Abbott ◽  
O. Abdinov ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Hadron Collider ◽  
Atlas Detector ◽  
Final States ◽  
Centre Of Mass ◽  
Mass Energy ◽  
Proton Proton ◽  
Proton Collisions ◽  
Strange Particles ◽  
Proton Proton Collisions

AbstractMeasurements of $$K_S^0$$KS0 and $$\Lambda ^0$$Λ0 production in $$t\bar{t}$$tt¯ final states have been performed. They are based on a data sample with integrated luminosity of 4.6 $$\mathrm {fb}^{-1}$$fb-1 from proton–proton collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the ATLAS detector at the Large Hadron Collider. Neutral strange particles are separated into three classes, depending on whether they are contained in a jet, with or without a b-tag, or not associated with a selected jet. The aim is to look for differences in their main kinematic distributions. A comparison of data with several Monte Carlo simulations using different hadronisation and fragmentation schemes, colour reconnection models and different tunes for the underlying event has been made. The production of neutral strange particles in $$t\bar{t}$$tt¯ dileptonic events is found to be well described by current Monte Carlo models for $$K_S^0$$KS0 and $$\Lambda ^0$$Λ0 production within jets, but not for those produced outside jets.

Multiparticle production in proton–proton collisions at high energies

1985 ◽  
Vol 63 (11) ◽  
pp. 1449-1452 ◽  
Author(s):  
M. T. Hussein ◽  
N. M. Hassan ◽  
M. K. Hegab
Keyword(s):  
Monte Carlo ◽  
Theoretical Model ◽  
Phase Space ◽  
Multiplicity Distribution ◽  
Proton Proton ◽  
Sequential Decay ◽  
Proton Collisions ◽  
High Energies ◽  
Proton Proton Collisions ◽  
Phase Space Integral

The multiplicity distribution and the inelasticity coefficient are studied for proton–proton collisions at incident energies of 6, 19, 25, and 69 GeV. A theoretical model is proposed, based on a sequential decay system formed by the two interacting protons. The Monte Carlo technique is used to calculate the phase-space integral and for simulation of events for the different reactions.

Sign in / Sign up

Export Citation Format

Share Document