搜索结果: 31-45 共查到“国际动态 高能物理学”相关记录213条 . 查询时间(2.476 秒)
Millions of cosmic rays bombard the Earth’s atmosphere every second. These are naturally-occurring particles from outer space, which are extremely difficult to detect and measure. When they collide wi...
中国科学院微观磁共振重点实验室彭新华教授、江敏副研究员等在量子精密测量和超越标准模型领域取得重要进展，利用超灵敏量子精密测量技术实现了超越标准模型的新玻色子直接搜寻，质量大于65μeV的轴子观测界限提升国际纪录至少10个数量级。相关研究成果于2022年7月26日以“Limits on Axions and Axionlike Particles within the Axion Window Us...
HL-LHC magnet endurance test further confirms niobium–tin’s resilience（图）
HL-大型强子对撞机 耐久性测试 铌锡磁铁 弹性
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2023/5/26
Future accelerator projects, including the high-luminosity upgrade of the Large Hadron Collider, will rely on niobium–tin (Nb3Sn) alloys for their superconducting components, such as electromagnets. T...
In the Standard Model of particle physics, the Brout–Englert–Higgs mechanism provides mass to elementary particles. While physicists are carrying out direct studies of the Higgs boson to test this mec...
中国科学技术大学物理学院ATLAS合作组在希格斯粒子实验研究中做出重要贡献（图）
希格斯粒子 双缪子末态 四底夸克末态
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2022/9/14
希格斯粒子在描述微观世界的“标准模型”中有着举足轻重的地位，基本粒子与希格斯场发生相互作用而获得质量。历时近半个世纪，该粒子于2012年由欧洲核子中心大型强子对撞机上的ATLAS与CMS实验发现，并直接促成2013年的诺贝尔物理学奖。后发现时代的研究重心是继续深入开展希格斯粒子性质测量以期揭示希格斯粒子更深层次的自然本性。ATLAS合作组于希格斯粒子发现十周年纪念日（2022.7.4）将该粒子的最...
At CERN’s Large Hadron Collider (LHC), studies of rare processes allow scientists to infer the presence of heavy particles, including undiscovered particles, that cannot be directly produced. Such par...
If you asked the average Pennsylvanian why they were celebrating the 4th of July this year, they would probably tell you that it was to mark Independence Day.
LHCb discovers three new exotic particles（图）
大型强子对撞机 奇异粒子 五夸克 四夸克
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2023/5/26
The international LHCb collaboration at the Large Hadron Collider (LHC) has observed three never-before-seen particles: a new kind of “pentaquark” and the first-ever pair of “tetraquarks”, which inclu...
ATLAS and CMS release results of most comprehensive studies yet of Higgs boson’s properties（图）
ATLAS CMS 希格斯玻色子
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2023/5/26
Today, exactly ten years after announcing the discovery of the Higgs boson, the international ATLAS and CMS collaborations at the Large Hadron Collider (LHC) report the results of their most comprehen...
超级计算机新预测的六夸克粒子存在
超级计算机 六夸克粒子 日本理化学研究所
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2022/12/31
日本理化学研究所（RIKEN）的科学家在最新一期《物理评论快报》杂志撰文称，他们利用超级计算机，预测了一种由六个夸克组成的奇异粒子的存在，最新研究有望加深科学家们对夸克如何结合形成原子核的理解。
Symmetries make the world go round, but so do asymmetries. A case in point is an asymmetry known as charge–parity (CP) asymmetry, which is required to explain why matter vastly outnumbers antimatter i...
CMS on the lookout for new physics（图）
CMS 大型强子对撞机 碰撞事件
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2023/5/26
With Run 3 of the LHC just around the corner, the LHC experiments are still publishing new results based on the previous runs’ data. Despite no new discoveries being announced, small deviations from e...
Autopsy of an LHC beam dump（图）
大型强子对撞机 光束倾倒 Autopsy
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2023/5/26
During LS2, the LHC’s two external beam dumps were removed from the tunnel and replaced with spare ones. After ten years of operation, they were showing signs of degradation, notably nitrogen leaks. B...
ALICE makes first direct observation of a fundamental effect in particle physics（图）
ALICE particle physics fundamental effect charm quark
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2022/6/27
The ALICE collaboration at the Large Hadron Collider (LHC) has made the first direct observation of the dead-cone effect – a fundamental feature of the theory of the strong force that binds quarks and...
Where is all the new physics? In the decade since the Higgs boson’s discovery, there have been no statistically significant hints of new particles in data from the Large Hadron Collider (LHC). Could t...