상대론적고에너지중이온충돌에서 제트입자와관련된제동복사 박가영 인하대학교 윤진희교수님, 권민정교수님

상대론적고에너지중이온충돌에서 제트입자와관련된제동복사 박가영 인하대학교 윤진희교수님, 권민정교수님

Motivation Bremsstrahlung is a major rocess losing energies while jet articles get through the medium. BUT it should be quite different from low energy otential scattering. 1 2014.12.05 (FRI) Heavy Ion Meeting

Motivation It is exected that in the high energy limit hotons or gluons are emitted in the direction of the initial jet articles. Chec the behavior of bremsstrahlung in relativistic heavy-ion collisions by calculating the cross section. 2 2014.12.05 (FRI) Heavy Ion Meeting

Model : Jet article scattering in medium C. Y. Wong, Phys. Rev. C 85, 064909 (2012) Two diagrams interfere to give the constructive behavior in the forward direction which results in the ridge correlation. 3 2014.12.05 (FRI) Heavy Ion Meeting

Bremsstrahlung of jet article in medium Interference term may lay an imortant role in this rocess and give the forward ea. 4 2014.12.05 (FRI) Heavy Ion Meeting

Bremsstrahlung of jet articles Initial Jet Particles Emitted Photon Medium Momentum Transfer Final Jet Particles Medium Parton 5 2014.12.05 (FRI) Heavy Ion Meeting

Amlitude for the Process 6 2014.12.05 (FRI) Heavy Ion Meeting

Cross Section for the Process Add them first before square them and interference terms are exected to give the forward ea. 7 2014.12.05 (FRI) Heavy Ion Meeting

Degree of Freedom - Consider 5 articles 2s of freedom - on mass shell condition : 5 - Energy momentum conservation : 4 - Set the direction of initial jet & medium arton to z axis : x = y = 0 & a x = a y = 0 - Left 7 degrees of freedom : 0, 0, θ, φ, 0, θ, φ 8 2014.12.05 (FRI) Heavy Ion Meeting

Degree of Freedom Using on mass-shell condition & - for initial medium - for final medium We have quadratic equation from two exression and solve it to get a 0 & a 3. 9 2014.12.05 (FRI) Heavy Ion Meeting

Angular Distribution of Cross Section Chec the angular distribution of the cross section. Chec the correlation = θ θ & = φ φ 10 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 10 GeV 9 GeV φ θ φ θ 0.1 GeV 1 = θ θ = φ φ 11 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 10 GeV 9 GeV φ θ φ θ 0.3 GeV 1 = θ θ = φ φ 12 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 10 GeV 9 GeV φ θ φ θ 0.5 GeV 1 = θ θ = φ φ 13 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 10 GeV 9 GeV φ θ φ θ 0.7 GeV 1 = θ θ = φ φ 14 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 10 GeV 9 GeV φ θ φ θ 0.9 GeV 1 = θ θ = φ φ 15 2014.12.05 (FRI) Heavy Ion Meeting

θ Deendence of Cross Section θ deendence 10 GeV 9 GeV φ θ φ θ 0.9 GeV 1 degree = θ θ = φ φ 16 2014.12.05 (FRI) Heavy Ion Meeting

θ Deendence of Cross Section θ deendence 10 GeV 9 GeV φ θ φ θ 0.9 GeV 3 degree = θ θ = φ φ 17 2014.12.05 (FRI) Heavy Ion Meeting

θ Deendence of Cross Section θ deendence 10 GeV 9 GeV φ θ φ θ 0.9 GeV 5 degree = θ θ = φ φ 18 2014.12.05 (FRI) Heavy Ion Meeting

θ Deendence of Cross Section θ deendence 10 GeV 9 GeV φ θ φ θ 0.9 GeV 1 = θ θ = φ φ 19 2014.12.05 (FRI) Heavy Ion Meeting

θ Deendence of Cross Section θ deendence 10 GeV 9 GeV φ θ φ θ 0.9 GeV 15 degree = θ θ = φ φ 20 2014.12.05 (FRI) Heavy Ion Meeting

θ Deendence of Cross Section θ deendence 10 GeV 9 GeV φ θ φ θ 0.9 GeV 2 = θ θ = φ φ 21 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 10 GeV 9 GeV φ θ φ θ 0.9 GeV 1 degree = θ θ = φ φ 22 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 20 GeV 0.9 E i GeV φ θ φ θ 0.9 (E i E f )GeV 1 degree = θ θ = φ φ 23 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 30 GeV 0.9 E i GeV φ θ φ θ 0.9 (E i E f )GeV 1 degree = θ θ = φ φ 24 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 40 GeV 0.9 E i GeV φ θ φ θ 0.9 (E i E f )GeV 1 degree = θ θ = φ φ 25 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 50 GeV 0.9 E i GeV φ θ φ θ 0.9 (E i E f )GeV 1 degree = θ θ = φ φ 26 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 50 GeV 0.8 E i GeV φ θ φ θ 0.9 (E i E f )GeV 1 degree = θ θ = φ φ 27 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 50 GeV 0.85 E i GeV φ θ φ θ 0.9 (E i E f )GeV 1 degree = θ θ = φ φ 28 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 50 GeV 0.9 E i GeV φ θ φ θ 0.9 (E i E f )GeV 1 degree = θ θ = φ φ 29 2014.12.05 (FRI) Heavy Ion Meeting

E Deendence of Cross Section E deendence 50 GeV 0.95 E i GeV φ θ φ θ 0.9 (E i E f )GeV 1 degree = θ θ = φ φ 30 2014.12.05 (FRI) Heavy Ion Meeting

Summary Calculate the cross section of bremsstrahlung for jet articles in medium after the relativistic high energy heavy ion collision. - At given incident energy and T Show the angular distribution of cross section - chec the correlation between and. 31 2014.12.05 (FRI) Heavy Ion Meeting

Outloo Need to include the momentum distribution of medium artons. Will chec the correlation between medium arton a and as a candidate rocess of the ridge correlation. 32 2014.12.05 (FRI) Heavy Ion Meeting

Motivation Bremsstrahlung is a major rocess losing energies while jet articles get through the medium. BUT it should be quite different from low energy otential scattering. 1 2014.12.05 (FRI) Heavy Ion Meeting