DOE News
    Doe Science news source
    The DOE Science News Source is a Newswise initiative to promote research news from the Office of Science of the DOE to the public and news media.
    • 2020-09-22 16:50:19
    • Article ID: 738466

    Berkeley Team Plays Key Role in Analysis of Particle Interactions That Produce Matter From Light

    Rare interaction of photons at CERN's Large Hadron Collider produced pairs of W bosons, which carry the weak force

    • Credit: ATLAS collaboration

      This image shows a reconstruction of a particle event at CERN’s ATLAS detector that produced W bosons from photons, which are particles of light.

    Researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) played a key role in an analysis of data from the world’s largest particle collider that found proof of rare, high-energy particle interactions in which matter was produced from light.

    Simone Pagan Griso, a Berkeley Lab physicist and Divisional Fellow who coordinated the efforts of the Berkeley Lab team, said his team found about 174 particle interactions that are consistent with the creation of pairs of heavy force-carrying particles called W bosons from the collision of two photons.

    Photons are particles of light that carry the electromagnetic force, which is the fundamental force associated with magnetism and electricity. W bosons carry the weak force, which is associated with the fusion that powers the sun, and with a nuclear reaction called nuclear fission that takes place in nuclear power plant reactors.

    From 2015 to 2018, only about one of the approximately 30 trillion proton interactions measured at the ATLAS detector at CERN’s Large Hadron Collider (LHC) would produce W boson pairs from the interaction of two photons per data-taking day, Pagan Griso said.

    The LHC is designed to accelerate and collide protons, which are positively charged particles found in atomic nuclei. The acceleration of bunches of these particles to nearly the speed of light produces strong electromagnetic fields that accompany the proton bunches and act like a field of photons. So when these high-energy photon bunches pass very closely at the LHC, their electromagnetic fields may interact, causing what’s known as an “ultra-peripheral collision.”

    Unlike the destructive proton-proton particle collisions that are used to generate a swarm of constituent particles and lead to particle interactions that are typically studied at the LHC, these ultra-peripheral collisions are more like rocks skipping across a surface. The interacting fields produce “quasi-real” photons, which are effects that resemble genuine photons in their characteristics but are not actual particles.

    In this latest analysis, the researchers focused on those rare occasions when the quasi-real photons produced pairs of W bosons.

    “It’s around 1,000 times less likely to happen than a quark-initiated W boson pair creation,” he noted, which presented a challenge in filtering out these more common types of interactions.

    “We had to be able to predict how much background we expected relative to a signal, and all of the other interactions that happen nearby,” he said. “This meant a lot of modeling and simulations to understand what different phenomena will look like.” Ultimately, the W boson pairs produced from the photon-photon interactions decayed down to an electron and a muon, a particle in the same class as the electron but with a mass 200 times greater.

    Also participating in Berkeley Lab’s analysis were Aleksandra Dimitrievska, a postdoctoral researcher and Chamberlain Fellow in the Physics Division; William Patrick Mccormack, a Ph.D. student at UC Berkeley and a Berkeley Lab researcher; and Maurice Garcia-Sciveres and Juerg Beringer, who are both senior staff scientists at Berkeley Lab.

    Pagan Griso noted that there was some hint for the production of W boson pairs from photon pairs in earlier data-taking at the LHC, though it was far less conclusive than this latest analysis.

    “We wrote this measurement from A to Z,” Pagan Griso said of the Berkeley Lab team involved in the studies. “We literally were involved in the entire spectrum of this analysis.”

    He added, “With even more data expected at the LHC in the future, we can probe this even better,” and learn more about the production rate of W boson pairs from photon-photon interactions, and the strength of the self-interaction among these four bosons, which is a stringent test of the Standard Model of particle physics. The team will also try to improve its analysis techniques, he said.

    Pagan Griso and other members of the Berkeley Lab ATLAS Group started the analysis, together with international collaborators, about a year and a half ago, he said. These recent results are preliminary and the study will soon be submitted to a scientific journal.

    More

    ###

    Founded in 1931 on the belief that the biggest scientific challenges are best addressed by teams, Lawrence Berkeley National Laboratory and its scientists have been recognized with 13 Nobel Prizes. Today, Berkeley Lab researchers develop sustainable energy and environmental solutions, create useful new materials, advance the frontiers of computing, and probe the mysteries of life, matter, and the universe. Scientists from around the world rely on the Lab’s facilities for their own discovery science. Berkeley Lab is a multiprogram national laboratory, managed by the University of California for the U.S. Department of Energy’s Office of Science.

    DOE’s Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit energy.gov/science.

    X
    X
    X
    • Filters

    • × Clear Filters
    A first-of-its-kind catalyst mimics natural processes to break down plastic and produce valuable new products

    A first-of-its-kind catalyst mimics natural processes to break down plastic and produce valuable new products

    A team of scientists led by the U.S. Department of Energy's Ames Laboratory has developed a first-of-its-kind catalyst that is able to process polyolefin plastics, types of polymers widely used in things like plastic grocery bags, milk jugs, shampoo bottles, toys, and food containers.

    A new approach boosts lithium-ion battery efficiency and puts out fires, too

    A new approach boosts lithium-ion battery efficiency and puts out fires, too

    This new technology addresses two major goals of battery research: extending the driving range of electric vehicles and reducing the danger that laptops, cell phones and other devices will burst into flames.

    Berkeley Lab Scientists Contribute to New Exploration of Higgs Boson Interactions

    Berkeley Lab Scientists Contribute to New Exploration of Higgs Boson Interactions

    A new analysis, featuring important contributions by Berkeley Lab scientists, strongly supports the hypothesis that the Higgs boson interacts with muons, which are heavier siblings of electrons and the lightest particles yet to reveal evidence for these interactions.

    New Algorithm Sharpens Focus of World's Most Powerful Microscopes

    New Algorithm Sharpens Focus of World's Most Powerful Microscopes

    Scientists have shown that an algorithm added to image processing software can improve the resolution and accuracy of cryo-electron microscopes, which are one of the most crucial tools in microbiology and medical research.

    An Electrical Trigger Fires Single, Identical Photons

    An Electrical Trigger Fires Single, Identical Photons

    The precisely controlled photon source, made from an atomically thin semiconducting material, could aid the development of advanced quantum communication

    First detailed look at how molecular Ferris wheel delivers protons to cellular factories

    First detailed look at how molecular Ferris wheel delivers protons to cellular factories

    All cells with nuclei, from yeast to humans, use molecular machines called protons to regulate the acidity of compartments called organelles where various types of work are done. A new study reveals a key step in how these Ferris wheel-like pumps operate.

    Argonne develops unprecedented long-term wildfire prediction model

    Argonne develops unprecedented long-term wildfire prediction model

    Wildfire indices and high-resolution climate models combine to produce a detailed historical analysis of wildfire events across the U.S. and suggest the potential for more severe and frequent fires in the latter half of the century.

    Study Finds 'Missing Link' in the Evolutionary History of Carbon-Fixing Protein Rubisco

    Study Finds 'Missing Link' in the Evolutionary History of Carbon-Fixing Protein Rubisco

    The discovery of a primitive form of rubisco, a photosynthetic enzyme, will help scientists understand how carbon-fixing organisms led to the planet's oxygenation and how modern

    Story Tips: Remote population counting, slowing corrosion and turning down the heat

    Story Tips: Remote population counting, slowing corrosion and turning down the heat

    ORNL story tips: Remote population counting, slowing corrosion and turning down the heat

    Shattering Expectations: Novel Seed Dispersal Gene Found in Green Millet

    Shattering Expectations: Novel Seed Dispersal Gene Found in Green Millet

    Researchers generated genome sequences for nearly 600 green millet plants and released a very high-quality reference S. viridis genome sequence Analysis of these plant genome sequences also led them to identify for the first time in wild populations a gene related to seed dispersal.


    • Filters

    • × Clear Filters
    Who Will Get the Prize for Better Hurricane Monitoring?

    Who Will Get the Prize for Better Hurricane Monitoring?

    The Ocean Observing Prize seeks competitors for an incentive prize program to help inventors advance new concepts for marine energy technologies that can power ocean observing systems. This phase focuses on observing platforms that host instruments that can provide better data regarding hurricane formation.

    Berkeley Lab Names Noel Bakhtian to Lead New Energy Storage Center

    Berkeley Lab Names Noel Bakhtian to Lead New Energy Storage Center

    Berkeley Lab has appointed Noel Bakhtian, previously a senior policy adviser in the White House Office of Science and Technology (OSTP) and currently director of the Center for Advanced Energy Studies (CAES) at Idaho National Laboratory, as its inaugural director of the Berkeley Lab Energy Storage Center.

    CERN Senior Fellow Dorota Grabowska Receives Leona Woods Lectureship Award

    CERN Senior Fellow Dorota Grabowska Receives Leona Woods Lectureship Award

    Dorota Grabowska, a senior fellow in the department of theoretical physics at CERN, Europe's particle physics laboratory, has been named a recipient of the Leona Woods Distinguished Postdoctoral Lectureship Award. The award was established by the physics department at the U.S. Department of Energy's Brookhaven National Laboratory in honor of renowned physicist Leona Woods to celebrate the scientific accomplishments of outstanding female physicists and physicists from other under-represented minority groups, including the LGBTQ community--and to promote diversity and inclusion in the department.

    Process to recover metals from batteries licensed by Momentum Technologies

    Process to recover metals from batteries licensed by Momentum Technologies

    Momentum Technologies Inc., a Dallas, Texas-based materials science company that is focused on extracting critical metals from electronic waste, has licensed an Oak Ridge National Laboratory process for recovering cobalt and other metals from spent lithium-ion batteries.

    PPPL physicist wins third place at Innovation Forum for advanced liquid centrifuge invention

    PPPL physicist wins third place at Innovation Forum for advanced liquid centrifuge invention

    Physicist Erik Gilson won third place at the Princeton University Keller Center's 15th Annual Innovation Forum for his invention with a team of PPPL researchers of an advanced liquid centrifuge.

    Oak Ridge National Laboratory, UT's Tony Schmitz elected to ASPE College of Fellows

    Oak Ridge National Laboratory, UT's Tony Schmitz elected to ASPE College of Fellows

    Tony Schmitz, joint faculty researcher in machining and machine tools at Oak Ridge National Laboratory, and mechanical, aerospace and biomedical engineering professor at the University of Tennessee, Knoxville, has been elected to the College of Fellows of the American Society for Precision Engineering.

    Coming Down the Pike: Long-Haul Trucks Powered by Hydrogen Fuel Cells

    Coming Down the Pike: Long-Haul Trucks Powered by Hydrogen Fuel Cells

    The Department of Energy has announced several major investments to take hydrogen fuel cells to the next level, and Lawrence Berkeley National Laboratory (Berkeley Lab) is set to play a leading role in providing the scientific expertise to help realize DOE's ambitious goals.

    Media Advisory: Epic Arctic Science Mission End Briefing

    Journalists are invited to join an October 12 Zoom media briefing with U.S. scientists and agency experts involved in the yearlong international research expedition MOSAiC: Multidisciplinary Drifting Observatory for the Study of Arctic Climate.

    Jennifer Doudna Wins 2020 Nobel Prize in Chemistry

    Jennifer Doudna Wins 2020 Nobel Prize in Chemistry

    Biochemist Jennifer Doudna, a professor at UC Berkeley and faculty scientist at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab), is co-winner of the 2020 Nobel Prize in Chemistry for "the development of a method for genome editing."

    Path-setting theoretical physicist Elena Belova elected an APS Fellow

    Path-setting theoretical physicist Elena Belova elected an APS Fellow

    Profile of PPPL physicist Elena Belova, a pioneer in developing hybrid simulation codes in fusion and space plasmas, who has been elected a Fellow of the American Physical Society.


    • Filters

    • × Clear Filters
    Harvesting Energy from Light using Bio-inspired Artificial Cells

    Harvesting Energy from Light using Bio-inspired Artificial Cells

    Scientists designed and connected two different artificial cells to each other to produce molecules called ATP (adenosine triphosphate).

    Engineering Living Scaffolds for Building Materials

    Engineering Living Scaffolds for Building Materials

    Bone and mollusk shells are composite systems that combine living cells and inorganic components. This allows them to regenerate and change structure while also being very strong and durable. Borrowing from this amazing complexity, researchers have been exploring a new class of materials called engineered living materials (ELMs).

    Excavating Quantum Information Buried in Noise

    Excavating Quantum Information Buried in Noise

    Researchers developed two new methods to assess and remove error in how scientists measure quantum systems. By reducing quantum "noise" - uncertainty inherent to quantum processes - these new methods improve accuracy and precision.

    How Electrons Move in a Catastrophe

    How Electrons Move in a Catastrophe

    Lanthanum strontium manganite (LSMO) is a widely applicable material, from magnetic tunnel junctions to solid oxide fuel cells. However, when it gets thin, its behavior changes for the worse. The reason why was not known. Now, using two theoretical methods, a team determined what happens.

    When Ions and Molecules Cluster

    When Ions and Molecules Cluster

    How an ion behaves when isolated within an analytical instrument can differ from how it behaves in the environment. Now, Xue-Bin Wang at Pacific Northwest National Laboratory devised a way to bring ions and molecules together in clusters to better discover their properties and predict their behavior.

    Tune in to Tetrahedral Superstructures

    Tune in to Tetrahedral Superstructures

    Shape affects how the particles fit together and, in turn, the resulting material. For the first time, a team observed the self-assembly of nanoparticles with tetrahedral shapes.

    Tracing Interstellar Dust Back to the Solar System's Formation

    Tracing Interstellar Dust Back to the Solar System's Formation

    This study is the first to confirm dust particles pre-dating the formation of our solar system. Further study of these materials will enable a deeper understanding of the processes that formed and have since altered them.

    Investigating Materials that Can Go the Distance in Fusion Reactors

    Investigating Materials that Can Go the Distance in Fusion Reactors

    Future fusion reactors will require materials that can withstand extreme operating conditions, including being bombarded by high-energy neutrons at high temperatures. Scientists recently irradiated titanium diboride (TiB2) in the High Flux Isotope Reactor (HFIR) to better understand the effects of fusion neutrons on performance.

    Better 3-D Imaging of Tumors in the Breast with Less Radiation

    Better 3-D Imaging of Tumors in the Breast with Less Radiation

    In breast cancer screening, an imaging technique based on nuclear medicine is currently being used as a successful secondary screening tool alongside mammography to improve the accuracy of the diagnosis. Now, a team is hoping to improve this imaging technique.

    Microbes are Metabolic Specialists

    Microbes are Metabolic Specialists

    Scientists can use genetic information to measure if microbes in the environment can perform specific ecological roles. Researchers recently analyzed the genomes of over 6,000 microbial species.


    Spotlight

    Virtual internships for physics students present challenges, build community
    Tuesday September 15, 2020, 04:35 PM

    Virtual internships for physics students present challenges, build community

    Princeton Plasma Physics Laboratory

    Blocking the COVID-19 Virus's Exit Strategy
    Monday August 31, 2020, 04:05 PM

    Blocking the COVID-19 Virus's Exit Strategy

    Brookhaven National Laboratory

    Summer Students Tackle COVID-19
    Monday August 31, 2020, 03:35 PM

    Summer Students Tackle COVID-19

    Brookhaven National Laboratory

    Graduate student at PPPL Ian Ochs wins top Princeton University fellowship
    Friday April 17, 2020, 05:25 PM

    Graduate student at PPPL Ian Ochs wins top Princeton University fellowship

    Princeton Plasma Physics Laboratory

    Barbara Garcia: A first-generation college student spends summer doing research at PPPL
    Tuesday September 24, 2019, 04:05 PM

    Barbara Garcia: A first-generation college student spends summer doing research at PPPL

    Princeton Plasma Physics Laboratory

    Argonne organization's scholarship fund blazes STEM pathway
    Tuesday September 17, 2019, 05:05 PM

    Argonne organization's scholarship fund blazes STEM pathway

    Argonne National Laboratory

    Brookhaven Lab, Suffolk Girl Scouts Launch Patch Program
    Friday September 13, 2019, 11:30 AM

    Brookhaven Lab, Suffolk Girl Scouts Launch Patch Program

    Brookhaven National Laboratory

    From an acoustic levitator to a
    Thursday September 12, 2019, 03:05 PM

    From an acoustic levitator to a "Neutron Bloodhound" robot, hands-on research inspires PPPL's summer interns

    Princeton Plasma Physics Laboratory

    Brookhaven Lab Celebrates the Bright Future of its 2019 Interns
    Friday August 30, 2019, 10:00 AM

    Brookhaven Lab Celebrates the Bright Future of its 2019 Interns

    Brookhaven National Laboratory

    PPPL apprenticeship program offers young people chance to earn while they learn high-tech careers
    Thursday August 01, 2019, 12:05 PM

    PPPL apprenticeship program offers young people chance to earn while they learn high-tech careers

    Princeton Plasma Physics Laboratory

    Creating a diverse pipeline
    Friday July 19, 2019, 01:05 PM

    Creating a diverse pipeline

    Princeton Plasma Physics Laboratory

    JSA Awards Graduate Fellowships for Research at Jefferson Lab
    Monday July 08, 2019, 03:00 PM

    JSA Awards Graduate Fellowships for Research at Jefferson Lab

    Thomas Jefferson National Accelerator Facility

    ILSAMP Symposium showcases benefits for diverse students, STEM pipeline
    Monday May 20, 2019, 12:05 PM

    ILSAMP Symposium showcases benefits for diverse students, STEM pipeline

    Argonne National Laboratory

    Integrating Scientific Computing into Science Curricula
    Monday May 13, 2019, 11:05 AM

    Integrating Scientific Computing into Science Curricula

    Brookhaven National Laboratory

    Students from Minnesota and Massachusetts Win DOE's 29th National Science Bowl(r)
    Monday April 29, 2019, 02:05 PM

    Students from Minnesota and Massachusetts Win DOE's 29th National Science Bowl(r)

    Department of Energy, Office of Science

    DOE's Science Graduate Student Research Program Selects 70 Students to Pursue Research at DOE Laboratories
    Friday April 12, 2019, 03:05 PM

    DOE's Science Graduate Student Research Program Selects 70 Students to Pursue Research at DOE Laboratories

    Department of Energy, Office of Science

    Young Women's Conference in STEM seeks to change the statistics one girl at a time
    Thursday March 28, 2019, 03:05 PM

    Young Women's Conference in STEM seeks to change the statistics one girl at a time

    Princeton Plasma Physics Laboratory

    Students team with Argonne scientists and engineers to learn about STEM careers
    Tuesday March 12, 2019, 05:05 PM

    Students team with Argonne scientists and engineers to learn about STEM careers

    Argonne National Laboratory

    Lynbrook High wins 2019 SLAC Regional Science Bowl competition
    Wednesday February 13, 2019, 02:05 PM

    Lynbrook High wins 2019 SLAC Regional Science Bowl competition

    SLAC National Accelerator Laboratory

    Equipping the next generation for a technological revolution
    Thursday January 24, 2019, 01:05 PM

    Equipping the next generation for a technological revolution

    Argonne National Laboratory

    Chemistry intern inspired by Argonne's real-world science
    Friday January 18, 2019, 05:05 PM

    Chemistry intern inspired by Argonne's real-world science

    Argonne National Laboratory

    Chasing a supernova
    Friday January 18, 2019, 04:05 PM

    Chasing a supernova

    Argonne National Laboratory

    Argonne intern streamlines the beamline
    Tuesday January 08, 2019, 02:05 PM

    Argonne intern streamlines the beamline

    Argonne National Laboratory

    Research on Light-Matter Interaction Could Lead to Improved Electronic and Optoelectronic Devices
    Thursday October 11, 2018, 04:00 PM

    Research on Light-Matter Interaction Could Lead to Improved Electronic and Optoelectronic Devices

    Rensselaer Polytechnic Institute (RPI)

    Innovating Our Energy Future
    Wednesday October 03, 2018, 07:05 PM

    Innovating Our Energy Future

    Oregon State University, College of Engineering

    Physics graduate student takes her thesis research to a Department of Energy national lab
    Tuesday October 02, 2018, 03:05 PM

    Physics graduate student takes her thesis research to a Department of Energy national lab

    University of Alabama at Birmingham

    Friday September 21, 2018, 01:05 PM

    "Model" students enjoy Argonne campus life

    Argonne National Laboratory

    Writing Code for a More Skilled and Diverse STEM Workforce
    Thursday September 06, 2018, 01:05 PM

    Writing Code for a More Skilled and Diverse STEM Workforce

    Brookhaven National Laboratory

    New graduate student summer school launches at Princeton Plasma Physics Laboratory
    Tuesday September 04, 2018, 11:30 AM

    New graduate student summer school launches at Princeton Plasma Physics Laboratory

    Princeton Plasma Physics Laboratory

    The Gridlock State
    Friday August 31, 2018, 06:05 PM

    The Gridlock State

    California State University (CSU) Chancellor's Office

    Meet Jasmine Hatcher and Trishelle Copeland-Johnson
    Friday August 31, 2018, 02:05 PM

    Meet Jasmine Hatcher and Trishelle Copeland-Johnson

    Brookhaven National Laboratory

    Argonne hosts Modeling, Experimentation and Validation Summer School
    Friday August 24, 2018, 11:05 AM

    Argonne hosts Modeling, Experimentation and Validation Summer School

    Argonne National Laboratory

    Students affected by Hurricane Maria bring their research to SLAC
    Wednesday August 22, 2018, 01:05 PM

    Students affected by Hurricane Maria bring their research to SLAC

    SLAC National Accelerator Laboratory

    Brookhaven Lab Pays Tribute to 2018 Summer Interns
    Wednesday August 22, 2018, 10:05 AM

    Brookhaven Lab Pays Tribute to 2018 Summer Interns

    Brookhaven National Laboratory

    Changing How Buildings Are Made
    Monday August 20, 2018, 12:05 PM

    Changing How Buildings Are Made

    Washington University in St. Louis

    CSUMB Selected to Host Architecture at Zero Competition in 2019
    Thursday August 16, 2018, 12:05 PM

    CSUMB Selected to Host Architecture at Zero Competition in 2019

    California State University, Monterey Bay

    Department of Energy Invests $64 Million in Advanced Nuclear Technology
    Friday July 20, 2018, 03:00 PM

    Department of Energy Invests $64 Million in Advanced Nuclear Technology

    Rensselaer Polytechnic Institute (RPI)

    Professor Miao Yu Named the Priti and Mukesh Chatter '82 Career Development Professor
    Thursday July 19, 2018, 05:00 PM

    Professor Miao Yu Named the Priti and Mukesh Chatter '82 Career Development Professor

    Rensselaer Polytechnic Institute (RPI)

    2018 RHIC & AGS Annual Users' Meeting: 'Illuminating the QCD Landscape'
    Tuesday July 03, 2018, 11:05 AM

    2018 RHIC & AGS Annual Users' Meeting: 'Illuminating the QCD Landscape'

    Brookhaven National Laboratory

    Argonne welcomes <em>The Martian</em> author Andy Weir
    Friday June 29, 2018, 06:05 PM

    Argonne welcomes The Martian author Andy Weir

    Argonne National Laboratory

    Creating STEM Knowledge and Innovations to Solve Global Issues Like Water, Food, and Energy
    Monday June 18, 2018, 09:55 AM

    Creating STEM Knowledge and Innovations to Solve Global Issues Like Water, Food, and Energy

    Illinois Mathematics and Science Academy (IMSA)

    Professor Emily Liu Receives $1.8 Million DoE Award for Solar Power Systems Research
    Friday June 15, 2018, 10:00 AM

    Professor Emily Liu Receives $1.8 Million DoE Award for Solar Power Systems Research

    Rensselaer Polytechnic Institute (RPI)

    Celebrating 40 years of empowerment in science
    Thursday June 07, 2018, 03:05 PM

    Celebrating 40 years of empowerment in science

    Argonne National Laboratory

    Introducing Graduate Students Across the Globe to Photon Science
    Monday May 07, 2018, 10:30 AM

    Introducing Graduate Students Across the Globe to Photon Science

    Brookhaven National Laboratory





    Showing results

    0-4 Of 2215