Mach Cone Induced by {gamma}-Triggered Jets in High-Energy Heavy-Ion Collisions
- Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430079 (China)
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P.O. Box 800-204, Shanghai 201800 (China)
Medium excitation by jet shower propagation inside a quark-gluon plasma is studied within a linear Boltzmann transport and a multiphase transport model. Contrary to the naive expectation, it is the deflection of both the jet shower and the Mach-cone-like excitation in an expanding medium that is found to give rise to a double-peak azimuthal particle distribution with respect to the initial jet direction. Such a deflection is the strongest for hadron-triggered jets which are often produced close to the surface of a dense medium due to trigger bias and travel against or tangential to the radial flow. Without such trigger bias, the effect of deflection on {gamma}-jet showers and their medium excitation is weaker. Comparative study of hadron and {gamma}-triggered particle correlations can therefore reveal the dynamics of jet-induced medium excitation in high-energy heavy-ion collisions.
- OSTI ID:
- 21532224
- Journal Information:
- Physical Review Letters, Vol. 106, Issue 1; Other Information: DOI: 10.1103/PhysRevLett.106.012301; (c) 2011 American Institute of Physics; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOLTZMANN EQUATION
CORRELATIONS
DISTRIBUTION
ELEMENTARY PARTICLES
EXCITATION
GLUONS
HADRONS
HEAVY ION REACTIONS
JETS
QUARK MATTER
SHOWERS
BOSONS
DIFFERENTIAL EQUATIONS
ENERGY-LEVEL TRANSITIONS
EQUATIONS
INTEGRO-DIFFERENTIAL EQUATIONS
KINETIC EQUATIONS
MATTER
NUCLEAR REACTIONS
PARTIAL DIFFERENTIAL EQUATIONS