BNL Home
  • RHIC

    Brookhaven physicists are using detectors at the Relativistic Heavy Ion Collider to explore how the matter that makes up atomic nuclei behaved just after the Big Bang.

  • ATLAS

    Brookhaven physicists and engineers are collaborators in the ATLAS experiment at CERN's Large Hadron Collider.

  • Neutrinos

    LBNE and the Daya Bay Neutrino Experiments seek to understand the subtle oscillations of neutrinos, ghost-like particles formed in the heart of stars

  • Cosmology

    In the LSST and BOSS experiments, Brookhaven physicists seek to measure and constrain the properties of dark matter, dark energy and the standard cosmological model.

Nuclear Physics

PHENIX

Responsibile for the operation and  physics exploitation of the PHENIX experiment at RHIC.

STAR

Responsibile for the operation and  physics exploitation of the STAR experiment at RHIC.

RHIC Spin

Leads, supports, and provides for the common requirements of the RHIC spin program, particularly for polarimetry.

RIKEN BNL Research Center

Conducts quantum chromodynamics and proton spin structure research.

Nuclear Theory

The nuclear theory group conducts research in all areas of QCD, including structure of hadrons and nuclei at high energies, the QCD phase diagram and the properties of quark-gluon matter.

RHIC Computing Facility

Provides computing services for experiments at RHIC, and the Large Synoptic Survey Telescope project.

High-Energy Physics

Cosmology & Astrophysics

Solving problems in observational cosmology: how to measure and constrain properties of dark matter, dark energy and the standard cosmological model.

Electronic Detector

Studies very rare processes at the Intensity Frontier.

Omega

Group members are collaborators on the LHC ATLAS experiment.

Physics Application

Develops physics applications software for the LHC ATLAS experiment.

High-Energy Theory

Focuses on providing theoretical foundation for the search for physics beyond the standard model, including lattice QCD calculations of key quantities required for this quest.

ATLAS Computing Facility

Provides computing services for U.S. ATLAS.

High-Energy Physics

Baryonic Oscillation Spectroscopic Survey

BOSS studies dark energy—the force thought to be responsible for the universe’s accelerating expansion.

Dark Energy Survey

Seeks to probe the origin of the accelerating universe and uncover the nature of dark energy by measuring the 14-billion-year history of cosmic expansion.

Large Synoptic Survey Telescope

A 3.2 gigapixel camera mounted in a  ground-based telescope designed to produce the widest, densest, and most complete images of our universe ever captured.

Deep Underground Neutrino Experiment

An international collaboration working to precisely measure neutrino oscillations.

ATLAS

An experiment at CERN's Large Hadron Collider designed to detect particles created by proton-proton collisions.

Daya Bay Neutrino Experiment

An international collaboration studying the subtle transformations of neutrinos.

MicroBooNE

Measures low energy neutrino cross sections and investigates low energy excess events observed by the MiniBooNE experiment.

Muon g-2

A high precision measurement of the muon's g-2 value. A deviation between theory and observed value will suggest the existence of new particles.

Mu2e

Experiment which directly probes the Intensity Frontier and aids research on the Energy and Cosmic frontiers with precision measurements to characterize properties of new particles.

Nuclear Physics

PHENIX

An experiment at the Relativistic Heavy Ion Collider designed to explore quark gluon plasma.

STAR

An experiment at the Relativistic Heavy Ion Collider designed to explore quark gluon plasma.

Electron Ion Collider (Future)

Plans for the world's first electron-nucleus collider, also known as eRHIC, call for the addition of a 5 to 10 GeV electron ring inside the RHIC tunnel.

The Physics Department is part of Brookhaven's Nuclear & Particle Physics Directorate.

Seminars & Colloquia

  1. No events scheduled

  1. JUL

    24

    Tuesday

    Nuclear Physics Seminar

    "Tale of coherent photon products: from UPC to HHIC"

    Presented by Wangmei Zha, University of Science and Technology of China

    11 am, Small Seminar Room, Bldg. 510

    Tuesday, July 24, 2018, 11:00 am

    Hosted by: Rongrong Ma

  2. JUL

    27

    Friday

    Nuclear Theory/RIKEN Seminar

    "TBA"

    Presented by Zhongbo Kang, UCLA

    2 pm, Building 510, CFNS Seminar Room 2-38

    Friday, July 27, 2018, 2:00 pm

    Hosted by: Chun Shen

  3. AUG

    30

    Thursday

    Special Nuclear Theory Seminar

    "TBA"

    Presented by Joaquin Drut, University of North Carolina

    12:30 pm, Building 510, Room 2-160

    Thursday, August 30, 2018, 12:30 pm

    Hosted by: Rob Pisarski

  4. SEP

    4

    Tuesday

    Nuclear Physics Seminar

    "Neutron production and capture in stellar nucleosynthesis:^{22}Ne(\Alpha,n)^{25}Mg reaction and radiative neutron captures of radioactive nuclei"

    Presented by Shuya Ota, Texas A&M University

    11 am, Small Seminar Room, Bldg. 510

    Tuesday, September 4, 2018, 11:00 am

    Hosted by: Jin Huang

    Most of elements heavier than Fe in the Universe are produced by a series of neutron capture reaction and ??-decay in stars. The s-process, which occurs under moderate neutron environments (~107-10 neutrons/cm3) such as in He burning of massive stars, is responsible for producing almost half of the heavy elements. Neutrons for the s-process environment is believed to be supplied by two dominant reactions, one of which is 22Ne(?,n)25Mg reaction. This reaction in massive stars is dominated by a few resonance reactions. Nevertheless, there remain large uncertainties about contribution of the reaction to the s-process nucleosynthesis because the reaction cross sections are too small for direct measurements due to Coulomb barrier (E? = 400-900 keV in the lab system). In the first half of this seminar, I will present our experiment to determine these resonance strengths with a cyclotron accelerator at Texas A&M University. The experiment was performed by an indirect approach using 6Li(22Ne,25Mg+n)d ?-transfer reaction, in which resonance properties such as neutron decay branching ratios of produced 26Mg were studied by measuring deuterons, ?-ray, and 26Mg in coincidence using large arrays of Si and Ge, and a magnetic spectrometer. Our results showed neutron production from 22Ne(?,n)25Mg reaction can be about 10 times lower than past measurements. The effect of our measurements on the s-process nucleosynthesis will be discussed. In the second half of this seminar, I will present our experiments to determine neutron capture cross sections of radioactive nuclei using the Surrogate Reaction method [1]. Neutron capture reactions for the s-process involve relatively long-lived nuclei neighboring stability in the nuclear chart. Therefore, the Surrogate Reaction, which creates the same compound nuclei as the neutron capture reaction using a stable beam and target, can be a useful approach. On the other hand, the r- process, which produces the other half

  1. JUL

    26

    Thursday

    Physics Summer School

    "Working with High-Performance Astronomical CCD"

    Presented by Andrei Nomerotski, BNL

    12:30 pm, Small Seminar Room, Bldg. 510

    Thursday, July 26, 2018, 12:30 pm

    Hosted by: Mary Bishai and Anze Slosar

  2. JUL

    31

    Tuesday

    Special Particle Physics Seminar

    "Dark Matter Annual Modulation with SABRE"

    Presented by Lindsey Bignell, Australian National University

    1:30 pm, Small Seminar Room, Bldg. 510

    Tuesday, July 31, 2018, 1:30 pm

    Hosted by: David Jaffe

    SABRE is a dark matter direct detection experiment with a target of ultra-pure NaI(Tl). Our experiment is motivated by the DAMA result; a long-standing and highly statistically significant modulation of the count rate in their NaI(Tl) detector that is consistent with that expected from the dark matter halo. However, a number of other direct detection experiments, using different target materials, exclude the dark matter parameter space implied by DAMA for the simplest WIMP-nucleus interaction models. SABRE hopes to carry out the first model-independent test of the DAMA claim, with sufficient sensitivity to confirm or refute their result. SABRE will also operate identical detectors in the northern and southern hemisphere, to rule out seasonally-modulated backgrounds. The southern detector will be housed at the first deep underground laboratory in the Southern Hemisphere: the Stawell Underground Physics Laboratory. This talk will give an overview of the SABRE design and its predicted sensitivity, as well as an update on the proof-of-principle detector which will be operating this summer.

  3. AUG

    7

    Tuesday

    Special Particle Physics Seminar

    "Deep Neural Network Techniques R&D for Data Reconstruction of Liquid Argon TPC Detectors"

    Presented by Kazuhiro Terao, SLAC National Accelerator Laboratory

    10 am, Small Seminar Room, Bldg. 510

    Tuesday, August 7, 2018, 10:00 am

    Hosted by: Chao Zhang

    Liquid Argon Time Projection Chambers (LArTPCs) are capable of recording images of charged particle tracks with breathtaking resolution. Such detailed information will allow LArTPCs to perform accurate particle identification and calorimetry, making it the detector of choice for many current and future neutrino experiments. However, analyzing such images can be challenging, requiring the development of many algorithms to identify and assemble features of the events in order to reconstruct neutrino interactions. In the recent years, we have been investigating a new approach using deep neural networks (DNNs), a modern solution to a pattern recognition for image-like data in the field of Computer Vision. A modern DNN can be applied for various types of problems such as data reconstruction tasks including interaction vertex finding, pixel clustering, and particle/topology type identification. We have developed a small inter-experiment collaboration to share generic software tools and algorithms development effort that can be applied to non-LArTPC imaging detectors. In this talk I will discuss the challenges of LArTPC data reconstruction, recent work and future plans for developing a full LArTPC data reconstruction chain using DNNs.

  4. AUG

    10

    Friday

    Condensed-Matter Physics & Materials Science Seminar

    "Advances in high energy electron holography"

    Presented by Toshiaki Tanigaki, Hitachi, Japan

    10:30 am, Conference room in building 480

    Friday, August 10, 2018, 10:30 am

    Hosted by: M.-G. Han

  5. SEP

    13

    Thursday

    Particle Physics Seminar

    "Higgs couplings"

    Presented by Konstantinos Nikolopoulos

    3 pm, Small Seminar Room, Bldg. 510

    Thursday, September 13, 2018, 3:00 pm

    Hosted by: Alessandro Tricoli

  6. OCT

    1

    Monday

    Particle Physics Seminar

    "Results from NA62 and its future program"

    Presented by Babette Döbrich, CERN

    3 pm, Small Seminar Room, Bldg. 510

    Monday, October 1, 2018, 3:00 pm

    Hosted by: Alessandro Tricoli

    The decay K+→π+νν, with a very precisely predicted branching ratio of less than 10^{-10}, is one of the best candidates to reveal indirect effects of new physics at the highest mass scales. The NA62 experiment at CERN SPS is designed to measure the branching ratio of the K+→π+νν with a decay-in-flight technique, novel for this channel. NA62 took data in 2016, 2017 and another year run is scheduled in 2018. Statistics collected in 2016 allows NA62 to reach the Standard Model sensitivity for K+→π+νν, entering the domain of 10-10 single event sensitivity and showing the proof of principle of the experiment. The analysis data is reviewed and the preliminary result from the 2016 data set presented. In addition, owing to the high beam-energy and a hermetic detector coverage, NA62 also has the opportunity to directly search for a plaethora of long-lived beyond-the Standard Model particles, such as Axion-like Particles and Dark Photons. We will review the status and results of this searches and give prospects for future data taking at NA62.