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Seminars

  1. JUN

    27

    Today

    Nuclear Physics Seminar

    "Measurement of longitudinal flow correlations in 2.76 and 5.02 TeV Pb+Pb collisions with the ATLAS detector"

    Presented by Peng Huo, Stony Brook University

    11 am, Small Seminar Room, Bldg. 510

    Tuesday, June 27, 2017, 11:00 am

    Hosted by: 'Jin Huang'

    Longitudinal dynamics has recently become a topic of great interest in the study of ultra-relativistic heavy ion collisions. Measurement of the longitudinal fluctuations of the flow harmonic coefficients $v_n$ and event-plane angles $\Psi_n$ can provide a more complete picture of space-time evolution of the hot, dense medium formed in heavy ion collisions. Longitudinal flow decorrelations can be modeled with two contributions: magnitude fluctuations and event plane twist. However, existing observables do not separate these two effects. In this analysis, a new 4-particle correlator is used to separate the event-plane twist from magnitude fluctuations in 2.76 and 5.02 Pb+Pb collisions. Results show both effects have a linear dependence on pseudorapidity separation for $v_{2-5}$, and show a small but measurable variation with collision energy. The correlation of $\Psi_n $ of different order are also expected to have longitudinal fluctuations due to the non-linear mixing effects between lower and higher order flow harmonics. First measurement of such non-linear mode-mixing effects as a function of pseudorapidity is also presented. These result will help to constrain initial conditions along longitudinal direction and also help understand the longitudinal evolution of the fireball.

  2. JUN

    30

    Friday

    Nuclear Theory/RIKEN Seminar

    "Probing Transverse Momentum Broadening in Heavy Ion Collisions"

    Presented by Feng Yuan, LBL

    2 pm, Small Seminar Room, Bldg. 510

    Friday, June 30, 2017, 2:00 pm

    Hosted by: 'Heikki Mantysaari'

    In this talk, we will discuss the dijet azimuthal de-correlation in relativistic heavy ion collisions as an important probe of the transverse momentum broadening effects in heavy ion collisions. We take into account both the soft gluon radiation in vacuum associated with the Sudakov logarithms and the jet PT-broadening effects in the QCD medium. We find that the Sudakov effects are dominant at the LHC, while the medium effects can play an important role at RHIC energies. This explains why the LHC experiments have not yet observed sizable PT-broadening effects in the measurement of dijet azimuthal correlations in heavy ion collisions. Future investigations at RHIC will provide a unique opportunity to study the PT-broadening effects and help to pin down the underlying mechanism for jet energy loss in a hot and dense medium.

  3. JUL

    7

    Friday

    Nuclear Theory/RIKEN Seminar

    "TBA"

    Presented by Ismail Zahed, Stony Brook

    2 pm, Small Seminar Room, Bldg. 510

    Friday, July 7, 2017, 2:00 pm

  4. AUG

    11

    Friday

    Nuclear Theory/RIKEN Seminar

    "TBA"

    Presented by Yoshitaka Hatta, Kyoto University

    2 pm, Small Seminar Room, Bldg. 510

    Friday, August 11, 2017, 2:00 pm

  5. AUG

    18

    Friday

    Nuclear Theory/RIKEN Seminar

    "TBA"

    Presented by Ignazio Scimemi, Universidad Complutense de Madrid

    2 pm, Small Seminar Room, Bldg. 510

    Friday, August 18, 2017, 2:00 pm

  6. SEP

    12

    Tuesday

    Physics Colloquium

    "EIC theory TBC"

    Presented by Elena Petreska, NIKHEF

    3:30 pm, Large Seminar Room, Bldg. 510

    Tuesday, September 12, 2017, 3:30 pm

  7. OCT

    24

    Tuesday

    Physics Colloquium

    "TBA"

    Presented by Christoph Lehner, BNL

    3:30 pm, Large Seminar Room, Bldg. 510

    Tuesday, October 24, 2017, 3:30 pm

    Hosted by: 'Rob Pisarski'

  1. Nuclear Physics Seminar

    "High-pt Hadron Production in Au+Au and d+Au Collisions at sqrt (s) = 200 GeV"

    Presented by Sasha Milov, Stony Brook University

    Tuesday, July 1, 2003, 11 am
    Small Seminar Room, Bldg. 510

  2. Nuclear Physics Seminar

    "Production of Lambda (1520) at RHIC at sqrt (s) = 200 GeV"

    Presented by Ludovic Gaudichet, Subatech, France

    Tuesday, July 15, 2003, 11 am
    Small Seminar Room, Bldg. 510

  3. Nuclear Physics Seminar

    "Induced Criticality of Non-Order Parameter Fields"

    Presented by Agnes Mocsy, Niels Bohr Institute, Denmark

    Tuesday, July 22, 2003, 11 am
    Small Seminar Room, Bldg. 510

  4. Nuclear Physics Seminar

    "Strangeness Production in Au+Au Collisions at RHIC"

    Presented by Ben Norman, Kent State University

    Tuesday, July 29, 2003, 11 am
    Small Seminar Room, Bldg. 510

  5. Nuclear Physics & RIKEN Theory Seminar

    "Hydrodynamic Afterburner for Color Glass Condensate"

    Presented by Yasushi Nara, University of Arizona

    Friday, August 8, 2003, 2 pm
    Small Seminar Room, Bldg. 510

  6. High-Energy Physics & RIKEN Theory Seminar

    "Strong Interaction Effect on Muon g-2"

    Presented by Masashi Hayakawa, RIKEN/BNL Research Center

    Sunday, August 10, 2003, 1:30 pm
    Small Seminar Room, Bldg. 510

  7. High-Energy Physics & RIKEN Theory Seminar

    "Elitzurs Theorem and the Sign Problem"

    Presented by Kim Splittorff, Stony Brook University

    Wednesday, August 13, 2003, 1:30 pm
    Small Seminar Room, Bldg. 510

  8. Instrumentation Division Seminar

    "Development of Novel Silicon Stripixel Detectors for High energy and Nuclear Physics Experiments"

    Presented by Zheng Li, Instrumentation Division

    Wednesday, September 10, 2003, 2:30 pm
    Large Seminar Room, Bldg. 535

  9. Nuclear Physics Seminar

    "Discovery of Penta Quarks"

    Presented by Prof. Ken-chi Imai, Kyoto University, Japan

    Tuesday, October 14, 2003, 11 am
    Small Seminar Room, Bldg. 510

  10. RIKEN BNL Research Center Workshop

    "Collective Flow and QGP Properties"

    Monday, November 17, 2003, 9 am
    Large Seminar Room, Bldg. 510