Nuclear scientists will present the latest research on the fundamental nature of matter at the 2021 Fall Meeting of the APS Division of Nuclear Physics.
Held fully virtually October 11 through October 14, 2021, the meeting includes talks on the neutron lifetime, quark matter, designer molecules, quantum hadrons, catastrophic astrophysical events, and nuclear fission. Sessions cover topics from hadron physics, nuclear astrophysics, and rare isotopes to quantum technology and the frontiers of nuclear science.
Members of the media and student journalists are invited to explore more than 100 live sessions and poster sessions. Featured talks and additional meeting highlights are listed below. Four live news briefings for the press will be held virtually. Please consult the scientific program for the most up-to-date schedule.
Please note all session times are in Eastern Daylight Time (EDT).
Complimentary registration is available to those with APS press credentials on the general meeting registration page. Request press credentials through this form.
Live virtual news briefings for the 2021 Fall Meeting of the APS Division of Nuclear Physics will be held online. Researchers will take questions from the media. Register at the links below. Recordings of the briefings will be available upon request.
Novel Experiment Measures Neutron Skin in CalciumRegister for the news briefingTuesday, October 12, 10:00 a.m. - 11:00 a.m. EDT
This highly-anticipated, long-awaited measurement of the neutron skin of the modestly sized, neutron rich 48Ca nucleus will provide an important benchmark for nuclear theory.
Quarks and Antiquarks at High Momentum Shake the Foundations of Visible MatterRegister for the news briefingTuesday, October 12, 2:15 p.m. - 3:15 p.m. EDT
SeaQuests measurement of light sea-quark flavor asymmetry is surprising as it clearly shows that even at high momentum fractions, antimatter is an important part of the proton.
Results from a new transformative measurement of a novel observable that provides direct insight into the origin of the EMC effect, with major implications for our understanding of the QCD structure of visible matter.
The Most Precise Measurement of the Neutron LifetimeRegister for the news briefingWednesday, October 13 at 12:30 p.m. - 1:30 p.m. EDT
Gonzalez will present the most precise measurement of the lifetime of the "free" neutron, which, along with the proton, is a building block of atomic nuclei.
Surprising Results From Nuclear Reactions Inside StarsWednesday, on October 13, 1:30 p.m. - 2:30 p.m. EDTRegister for the news briefing
Preliminary data on the effects of high magnetic fields on accreting neutron stars will be explained, including magnetar accretion and x-ray bursts.
The Most Precise Measurement of the Neutron LifetimeA multi-institutional team of physicists will present new measurements that may explain how atomic nuclei formed in the early universe. The huge improvement in precision will finally allow researchers to probe a discrepancy in the standard model. [Forthcoming PRL Paper] [Live News Briefing Registration]
Novel Experiment Measures Neutron Skin in CalciumFirst results from a precision measurement of the neutron skin in a calcium nucleus will be announced. We expect to set a benchmark with this measurement. The neutron skin in lead came out thick relative to our expectations, so we expect the same with calcium, says Robert Michaels, a staff scientist at Jefferson Lab. [Live News Briefing Registration] Read More
New Results From the RHIC Spin ProgramResearchers will present the latest results on contributions of quarks and gluons and future measurement opportunities at the Relativistic Heavy Ion Collider (RHIC). The findings will also be published in Physical Review Letters. Read More
Quarks and Antiquarks at High Momentum Shake the Foundations of Visible MatterJefferson Lab and Fermilab experiments present new results on nucleon structure. Preliminary results using a novel tagging method could explain the origin of the longstanding nuclear paradox known as the EMC effect. Meanwhile, authors will share next steps after the recent observation of asymmetrical antimatter in the proton.[Live News Briefing Registration] Read More
Nuclear Physicists Track Money Crimes From Ancient Rome to Benjamin FranklinA new project unearths the history of fraud, forgery, and currencyand might clear Emperor Neros name. Read More
Surprising Results From Nuclear Reactions Inside StarsWhen extremely high temperatures and magnetic fields meet in space, they change the environments where elements are forged. Preliminary data shows unexpected effects of magnetic fields on neutron stars. It may actually explain some of the strange behavior that we see in stellar environments, said Western Michigan University professor Michael Famiano.[Live News Briefing Registration] Read More
To Find Sterile Neutrinos, Think SmallTwo small-scale experiments may beat the massive machines pursuing evidence of new physicsand could improve cancer treatment. Read More
Seeking the Star Stuff That Made UsNovel techniques provide a new picture of cosmic heavy-element formation by unifying theory, observation, and experiment. These complementary approaches are yielding surprising results. Read More
A 5-Sigma Standard Model Anomaly Is PossibleFrom the moon to the math, latest attempts at breaking CKM matrix unitarityand discovering new physics. Read More
9:30 a.m. EDT Designer MoleculesIn July, a study of radium monofluoride reported results that might help explain nuclear phenomena and why theres so little antimatter in the universe. Now the team shows how to customize RaF nuclei one neutron at a timepotentially allowing scientists to turn on and off interactions within molecules and explore violations of fundamental symmetries. [Abstract], Silviu-Marian Udrescu, sudrescu@mit.edu
9:30 a.m. EDT Primordial FlavorStrangeness, charm, and beauty reveal the inner workings of the early universe, extreme nuclear matter, and the physics of parton showers in this mini-symposium on hadrons. This is the first calculation of heavy flavor jet production at the Electron-Ion Collider, said invited speaker and physicist Ivan Vitev. [Abstracts] [PRL Paper] [Preprint], Ivan M. Vitev, ivitev@lanl.gov
10:54 a.m. EDT First Hadrons on a Quantum ComputerScientists have succeeded in simulating hadrons on a quantum computer, unlocking key elements of the lattice gauge theory that describes all matter. [Abstract], Jinglei Zhang, jingleizl@gmail.com
10:54 a.m. EDT Stellar ToothpasteWhy is fluorine so rare in the universe? Counting bubbles using a new detector might hold clues, illuminating the reaction rate at which stars produce the ingredient in drinking water, toothpaste, and Teflon. [Abstract], David Neto, dneto2@uic.edu
11:45 a.m. EDT A Single Physical Property Sets the Complexity of Quantum SimulationNew results solve a problem that remained open for two decades and bring the quantum simulation of condensed-matter, nuclear, and high-energy physics closer to reality. [Abstract] [Nature Paper], Burak Sahinoglu, sahinoglu@lanl.gov
12:33 p.m. EDT Why Deuterons Disintegrate DifferentlyBaffling recent experiments on deuteron disintegration have defied known nuclear interpretations. Now theorists think they have an explanation: New structures hide in the heart of the deuteron at very short distances. The research may change what we know about neutron stars and the stability of matter in the universe. [Abstract], Misak M. Sargsian, sargsian@fiu.edu
12:57 p.m. EDT The Shape of NucleiSmashing deformed nuclei together takes a snapshot of the nuclei shape. The new imaging method by the STAR Collaboration, using high-energy nuclear collisions, has revealed a rugby-ball shape in ruthenium-96 and a pear shape in zirconium-96. [Abstract], Chunjian Zhang, chun-jian.zhang@stonybrook.edu
1:09 p.m. EDT Excited TritonsPreliminary data could reveal the first experimental evidence for an excited state in the triton, a heavier version of the proton with two extra neutrons, but alternative explanations need to be excluded. [Abstract], Cody E. Parker, ceparker@comp.tamu.edu
3:12 p.m. EDT Symmetry Violations Thanks to the Neutron Electric Dipole MomentUpdated analysis on tests for the neutron electric dipole moment could shape the search for Lorentz symmetry violation. [Abstract],Prajwal T. MohanMurthy, prajwal@alum.mit.edu
About APS The American Physical Society is a nonprofit membership organization working to advance and diffuse the knowledge of physics through its outstanding research journals, scientific meetings, and education, outreach, advocacy, and international activities. APS represents over 55,000 members, including physicists in academia, national laboratories, and industry in the United States and throughout the world. Society offices are located in College Park, Maryland (Headquarters), Ridge, New York, and Washington, DC.
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