PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Physicists discover heaviest antimatter hypernucleus to date

Physicists discover heaviest antimatter hypernucleus to date
2024-08-21
(Press-News.org)

Physicists from the STAR Collaboration have observed a new antimatter hypernucleus, antihyperhydrogen-4, for the first time. This is the heaviest antimatter hypernucleus discovered in experiments to date. This study, led by researchers from the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences, was published in Nature on Aug. 21.

Current physics assumes that the properties of matter and antimatter are symmetrical and that equal amounts of matter and antimatter existed at the birth of the universe. However, some mysterious physical mechanism caused the annihilation of most matter and antimatter, with only about one in ten billion matter particles surviving. These particles formed the matter world we see today.

"What caused the difference in quantities of matter and antimatter in the universe? To answer this question, an important approach is to create new antimatter in the laboratory and study its properties," said Prof. QIU Hao from IMP.

In today's matter-dominated world, antimatter is extremely rare because it easily annihilates with surrounding matter. Antimatter nuclei and antimatter hypernuclei (nuclei containing hyperons such as Lambda) formed by combining several antibaryons are even more difficult to produce. Since the Dirac equation indicated the existence of antimatter in 1928, scientists have discovered only six types of antimatter (hyper)nuclei over nearly a century.

The newly discovered antihyperhydrogen-4 was produced at the Relativistic Heavy Ion Collider (RHIC) in the United States. RHIC can accelerate heavy ion beams to nearly the speed of light and make them collide. These collisions simulate the conditions of the early universe in the laboratory, producing fireballs with temperatures of several trillion degrees, which contain approximately equal amounts of matter and antimatter. As the fireball rapidly expands and cools, some antimatter escapes annihilation with matter and is detected by the STAR detector.

Antihyperhydrogen-4 is composed of one antiproton, two antineutrons, and one anti-Lambda hyperon. Due to the presence of the unstable anti-Lambda hyperon, antihyperhydrogen-4 decays after traveling merely a few centimeters.

"After analyzing experimental data of approximately 6.6 billion heavy-ion collision events, we reconstructed antihyperhydrogen-4 from its decay products antihelium-4 and π+ meson, and identified a signal of about 16 antihyperhydrogen-4," said WU Junlin, a PhD student at IMP.

The researchers also measured the lifetime of antihyperhydrogen-4 and found no significant difference compared to that of its corresponding particle hyperhydrogen-4 within the limits of measurement precision, further verifying the symmetry between matter and antimatter properties.

The discovery and study of antihyperhydrogen-4 mark a significant advancement in the exploration of antimatter and the understanding of matter-antimatter symmetry.

END


[Attachments] See images for this press release:
Physicists discover heaviest antimatter hypernucleus to date

ELSE PRESS RELEASES FROM THIS DATE:

Pediatric functional gastrointestinal disorders: pathophysiology, diagnosis and management

2024-08-21
Functional Gastrointestinal Disorders (FGIDs), also known as disorders of gut-brain interaction, encompass a wide range of conditions that cannot be attributed to structural, biochemical, or organic abnormalities. These disorders vary significantly from infancy to adulthood, with distinct manifestations in neonates/toddlers and children/adolescents. The ROME criteria, updated periodically, currently in use is ROME IV, which facilitates early and accurate diagnosis of FGIDs. Despite their prevalence, pediatric FGIDs pose diagnostic and therapeutic challenges due to children's inability to articulate symptoms and the influence ...

Gluten is a proinflammatory inducer of autoimmunity

Gluten is a proinflammatory inducer of autoimmunity
2024-08-21
The interaction between humans and their environment, mediated by nutrition, plays a crucial role in regulating inflammatory responses. Chronic inflammatory diseases have been on the rise, and the scientific community has been actively exploring pro-inflammatory nutrients as potential therapeutic targets. Gluten, a major component of wheat, barley, and rye, has been implicated in numerous health issues, particularly celiac disease (CD). This review essay summarizes the key findings of a recent study published in the Journal of Translational Gastroenterology, focusing on the proinflammatory effects of gluten and its implications in autoimmunity. Gluten and ...

Eyes in the sky and on the ground: enhanced dryland monitoring with remote sensing

Eyes in the sky and on the ground: enhanced dryland monitoring with remote sensing
2024-08-21
While animals in drylands hone their natural senses to find vegetation, humans have developed “external eyes” to track these vital resources.   Scientists from the U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS) have created an advanced method that integrates high-frequency near-surface camera data with broader satellite imagery to better monitor and assess dryland ecosystems. Their approach could aid in taking timely action to prevent land degradation, contributing to improved environmental management and conservation strategies.   Their results were published in the Journal of Remote Sensing on July 8.   Drylands, including ...

New Data: MedPearl clinical decision platform improves specialty referrals, boosts productivity, and reduces clinician time spent in the EMR

2024-08-21
Data published today in the New England Journal of Medicine Catalyst reported that MedPearl, a Providence-developed clinician-built clinical decision platform, improves primary care clinician productivity, decreases time waste on administrative tasks and improves the quality of referrals sent to specialists. The paper details operational outcomes from MedPearl’s use among more than 4,000 active monthly clinician users and shows statistically significant improvement in total productivity, after-hours time spent in the EMR and incremental margin per referral ...

Kessler Foundation scientists investigate effects of robotic postural stand training combined with spinal cord epidural stimulation

Kessler Foundation scientists investigate effects of robotic postural stand training combined with spinal cord epidural stimulation
2024-08-21
East Hanover, NJ – August 21, 2024 – Kessler Foundation researchers have published a new clinical study investigating the effects of robotic postural stand training combined with spinal cord epidural stimulation (Stand-scES) on trunk control in individuals with high-level spinal cord injury (SCI). The open access article, “Effects of Robotic Postural Stand Training with Epidural Stimulation on Sitting Postural Control in Individuals with Spinal Cord Injury: A Pilot Study” (doi.org/10.3390/jcm13154309) was published in the Journal of Clinical ...

New center to improve robot dexterity selected to receive up to $52 million

2024-08-21
PITTSBURGH - Carnegie Mellon University will be a core partner in a new multi-institutional collaboration that has received $26 million from the National Science Foundation to launch an Engineering Research Center (ERC) dedicated to revolutionizing the ability of robots to amplify human labor. Nine Carnegie Mellon University faculty members, with expertise ranging from Softbotics, engineering, and computer science to psychology, and diversity and inclusion, will help to develop highly dexterous robotic hands, user-friendly interfaces, ...

N6-methyladenosine (m6A) RNA modification’s regulatory role in acute and chronic leukemia

N6-methyladenosine (m6A) RNA modification’s regulatory role in acute and chronic leukemia
2024-08-21
Epigenetics, the modification of chromosomes without altering DNA sequences, serves as a crucial regulatory mechanism for gene expression. Among the various epigenetic marks, N6-methyladenosine (m6A) modifications on RNA have gained significant attention in recent years for their role in various biological processes, including cancer development and progression. This article reviews the latest advances in understanding the role of m6A modifications in leukemia, a heterogeneous group of hematological malignancies. Role of m6A Modification in Leukemia m6A Writers and Erasers m6A modifications ...

Revolutionary rehab robotics: A new leap in adaptive gait training

Revolutionary rehab robotics: A new leap in adaptive gait training
2024-08-21
In an era where technology increasingly merges with healthcare to enhance patient outcomes, a groundbreaking study conducted by Fuyang Yu and his colleagues introduces an innovative approach to lower limb rehabilitation. Their research, published in Cyborg Bionic Systems, outlines the development of a lower limb rehabilitation robot designed to significantly improve the safety and effectiveness of gait training through a novel method based on human-robot interaction force measurement. Rehabilitation robots are ...

Targeted cancer cell therapy may slow endometrial cancer

2024-08-21
There may be a way to slow the growth of endometrial cancer through targeted cancer cell therapy, according to new research from the University of Missouri School of Medicine. This year, around 65,000 women are expected to be diagnosed with endometrial cancer, the most common cancer of the female reproductive organs. An increased risk in development for multiple human cancers is associated with mutations in the PTEN protein, which normally regulates cell division and growth. The mutation allows cells to multiply uncontrollably.  Using mice models, Krystina Dunston, research lab manager and NextGen Precision Health researchers Tae Hoon Kim and Jae-Wook Jeong, studied the ...

Hepatic disease: a camu-camu fruit extract to reduce liver fat

2024-08-21
Québec City, August 21, 2024 – A research team from Université Laval has shown the benefits of camu-camu on non-alcoholic fatty liver disease, which affects over seven million people in Canada. This exotic fruit reduces liver fat levels.   Over 12 weeks, thirty participants took either camu-camu extract or a placebo at different times in this randomized clinical trial. Participants underwent magnetic resonance imaging (MRI) to determine fat levels in the liver. Scientists observed a 7.43% reduction in liver lipids when study participants took camu-camu extract. With the ...

LAST 30 PRESS RELEASES:

Eco-friendly biomass pretreatment method yields efficient biofuels and adsorbents

How graph convolutions amplify popularity bias for recommendation?

New lignin-based hydrogel breakthrough for wound healing and controlled drug release

Enhancing compatibility and biodegradability of PLA/biomass composites via forest residue torrefaction

Time alone heightens ‘threat alert’ in teenagers – even when connecting on social media

Study challenges long-held theories on how migratory birds navigate 

Unlocking the secrets of ketosis

AI analysis of PET/CT images can predict side effects of immunotherapy in lung cancer

Making an impact. Research studies a new side of helmet safety: faceguard failures

Specific long term condition combinations have major role in NHS ‘winter pressures’

Men often struggle with transition to fatherhood amid lack of targeted information and support

More green space linked to fewer preventable deaths in most deprived areas of UK

Immunotherapy drug pembrolizumab improves outcomes for patients with soft tissue sarcoma

A formula for life? New model calculates chances of intelligent beings in our Universe and beyond

Could a genetic flaw be the key to stopping people craving sugary treats?

Experts urge complex systems approach to assess A.I. risks

Fossil fuel CO2 emissions increase again in 2024

Winners of Applied Microbiology International Horizon Awards 2024 announced

A toolkit for unraveling the links between intimate partner violence, trauma and substance misuse

Can everyday physical activity improve cognitive health in middle age?

Updated guidance reaffirms CPR with breaths essential for cardiac arrest following drowning

Study reveals medical boards rarely discipline physician misinformation

New treatment helps children with rare spinal condition regain ability to walk

'Grow Your Own' teacher prep pipeline at the University of Louisiana at Lafayette funded by US Department of Education

Lab-grown human immune system uncovers weakened response in cancer patients

More than 5 million Americans would be eligible for psychedelic therapy, study finds

Children’s Hospital of Philadelphia researchers find community health workers play critical role in coordinating asthma care across home, school and community

Comprehensive Genomic Profiling leads to better patient outcomes, new joint study says  

Animated movie characters with strabismus are more likely to be villains, study finds

How retailers change ordering strategy when a supplier starts its own direct channel

[Press-News.org] Physicists discover heaviest antimatter hypernucleus to date