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#LHC

2 posts2 participants1 post today
Public *
Universität Freiburg

Der „Breakthrough Prize in Fundamental Physics“ 2025 geht an vier CERN-Experimente – mit maßgeblicher Beteiligung der Universität Freiburg.

Die Teilchenphysik-Experimente ALICE, ATLAS, CMS und LHCb am CERN wurden für ihre Beiträge zur Entdeckung des Higgs-Bosons, zur Erforschung neuartiger Teilchen und zur Untersuchung der Materie-Antimaterie-Asymmetrie mit dem renommierten „Breakthrough Prize in Fundamental Physics“ ausgezeichnet.

Am ATLAS-Experiment waren und sind die Teams von Prof. Dr. Karl Jakobs, Prof. Dr. Gregor Herten, Prof. Dr. Markus Schumacher sowie seit Januar 2025 auch von Jun.-Prof. Dr. Brian Moser beteiligt. Ihre Arbeiten umfassten u. a. Aufbau, Betrieb und Analyse des Experiments sowie zentrale Beiträge zum Nachweis des Zerfalls des Higgs-Bosons in Quarks und geladene Leptonen. Jakobs war von 2017 bis 2021 Sprecher der internationalen ATLAS-Kollaboration.

Am LHCb-Experiment, das neue Einblicke in die Asymmetrie von Materie und Antimaterie sowie in seltenste Teilchenzerfälle ermöglicht, ist seit Juli 2024 eine neue Arbeitsgruppe unter Leitung von Prof. Dr. Marco Gersabeck am Physikalischen Institut beteiligt.

Darüber hinaus sind Freiburger Gruppen an der Weiterentwicklung der Experimente für die Hochluminositätsphase des LHC beteiligt. Für ATLAS und LHCb entstehen in Freiburg hochauflösende Silizium-Spurdetektoren, die ab 2030 zum Einsatz kommen sollen.

ufr.link/breakthrough-prize

Porträtfoto mit Zitat von Prof. Dr. Karl Jakobs vom Physikalischen Institut – ATLAS-Experiment. „Der Preis würdigt das hohe Engagement von Tausenden Wissenschaftler*innen und Ingenieur*innen, insbesondere aber auch unserer Doktorand*innen und Nachwuchswissenschaftler*innen, die in den großen Kollaborationen am CERN zusammenarbeiten.“
Porträtfoto und Zitat von Prof. Dr. Marco Gersabeck vom Physikalischen Institut – LHCb-Experiment. „Die Auszeichnung durch den Preis drückt eine Wertschätzung der vielfältigen Beiträge des LHCb-Experiments aus, die von Entdeckungen neuartiger Materie-Antimaterie-Asymmetrien und seltenster Teilchenzerfälle bis zu Dutzenden neuartiger Zustände von Hadronen reichen.“
#unifreiburg#universitätfreiburg#universityfreiburg
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Birk Marold

Apparently #elililly who backed #trump in the #elections with 27 billion USD had a meeting with the #executive in the last week in which #ceo and co figured out their #market value is getting ducked by trump. So the CEO just had a meeting with said agent orange complaining about it. ^^

Funny... #cern #lhc and co did cost in total about 5.5 billion USD.

... Think what elilily could have accomplished if they wouldn't been so fucking stupid and if people in charge would actually be smart and not just rich.

Public
MediaFaro News Digest

Particle accelerator: CERN presents a feasibility study for a LHC successor.

The Large Hadron Collider (LHC) is currently the largest and most powerful particle accelerator in the world. Groundbreaking discoveries have been made there, such as the detection of the Higgs boson in 2012.

The European Organization for Nuclear Research (CERN) is planning a successor with a circumference of over 90 kilometres.

mediafaro.org/article/20250401

Artist's impression of the FCC proton-proton collider. | Image: PIXELRISE
Heise Online · Particle accelerator: CERN presents a feasibility study for a LHC successor.By Werner Pluta
#LHC#Physics#ParticlePhysics
Public
:rss: Hacker News

CERN scientists find evidence of quantum entanglement in sheep
home.cern/news/news/physics/ce
#ycombinator #physics #CERN #Large_Hadron_Collider #LHC #high_energy_physics #particles #science

CERNCERN scientists find evidence of quantum entanglement in sheepThe CERN flock of sheep on site in 2017. (Image: CERN) Quantum entanglement is a fascinating phenomenon where two particles’ states are tied to each other, no matter how far apart the particles are. In 2022, the Nobel Prize in Physics was awarded to Alain Aspect, John F. Clauser and Anton Zeilinger for groundbreaking experiments involving entangled photons. These experiments confirmed the predictions for the manifestation of entanglement that had been made by the late CERN theorist John Bell. This phenomenon has so far been observed in a wide variety of systems, such as in top quarks at CERN’s Large Hadron Collider (LHC) in 2024. Entanglement has also found several important societal applications, such as quantum cryptography and quantum computing. Now, it also explains the famous herd mentality of sheep. A flock of sheep (ovis aries) has roamed the CERN site during the spring and summer months for over 40 years. Along with the CERN shepherd, they help to maintain the vast expanses of grassland around the LHC and are part of the Organization’s long-standing efforts to protect the site’s biodiversity. In addition, their flocking behaviour has been of great interest to CERN's physicists. It is well known that sheep behave like particles: their stochastic behaviour has been studied by zoologists and physicists alike, who noticed that a flock’s ability to quickly change phase is similar to that of atoms in a solid and a liquid. Known as the Lamb Shift, this can cause them to get themselves into bizarre situations, such as walking in a circle for days on end. Now, new research has shed light on the reason for these extraordinary abilities. Scientists at CERN have found evidence of quantum entanglement in sheep. Using sophisticated modelling techniques and specialised trackers, the findings show that the brains of individual sheep in a flock are quantum-entangled in such a way that the sheep can move and vocalise simultaneously, no matter how far apart they are. The evidence has several ramifications for ovine research and has set the baa for a new branch of quantum physics. “The fact that we were having our lunch next to the flock was a shear coincidence,” says Mary Little, leader of the HERD collaboration, describing how the project came about. “When we saw and herd their behaviour, we wanted to investigate the movement of the flock using the technology at our disposal at the Laboratory.” Observing the sheep’s ability to simultaneously move and vocalise together caused one main question to aries: since the sheep behave like subatomic particles, could quantum effects be the reason for their behaviour? “Obviously, we couldn’t put them all in a box and see if they were dead or alive,” said Beau Peep, a researcher on the project. “However, by assuming that the sheep were spherical, we were able to model their behaviour in almost the exact same way as we model subatomic particles.” Using sophisticated trackers, akin to those in the LHC experiments, the physicists were able to locate the precise particles in the sheep’s brains that might be the cause of this entanglement. Dubbed “moutons” and represented by the Greek letter lambda, l, these particles are leptons and are close relatives of the muon, but fluffier. The statistical significance of the findings is 4 sigma, which is enough to show evidence of the phenomenon. However, it does not quite pass the baa to be classed as an observation. “More research is needed to fully confirm that this was indeed an observation of ovine entanglement or a statistical fluctuation,” says Ewen Woolly, spokesperson for the HERD collaboration. “This may be difficult, as we have found that the research makes physicists become inexplicably drowsy.” “While entanglement is now the leading theory for this phenomenon, we have to take everything into account,” adds Dolly Shepherd, a CERN theorist. “Who knows, maybe further variables are hidden beneath their fleeces. Wolves, for example.” Theoretical physicist John Ellis, pioneer of the penguin diagram, with its updated sheep version. Scientists at CERN find evidence of quantum entanglement in sheep in 2025, the year declared by the United Nations as the International Year of Quantum Science and Technology. (Image: CERN)
Public
Renne Rocha

Ontem saiu a agenda da Tosconf, a desconferência do @lhc que vai acontecer em 22/03 aqui no hackerspace! Tá uma mistura bem interessante de assuntos! 🙂

tosconf.lhc.net.br/#schedule

Convidando a quem me segue aqui de Campinas e região para participar! As inscrições estão abertas!

tosconf.lhc.net.brTOSCONF[5]A Tosconf é uma desconferência anual organizada pelo Laboratório Hacker de Campinas (LHC). Atualmente em sua sexta edição, o evento celebra a diversidade e criatividade, não impondo restrições aos temas e atividades apresentados.
#hackerspaces#tosconf#LHC
Public
universeinthelab

Aufruf an alle #Schüler*innen: Wollt ihr die Geheimnisse des Universums entdecken?

Macht mit bei unserer International Masterclass!

GSI/FAIR in #Darmstadt lädt zur IPPOG Veranstaltung ein, bei der Schüler*innen in die faszinierende Welt der Teilchenphysik eintauchen können.

Ihr könnt echte Daten vom ALICE Experiment beim #LHC bei #CERN analysieren.

Klingt spannend? Meldet euch jetzt an: gsi.de/jobskarriere/angebote_f

#Physik #ResearchDay #Oberstufe #ALICEmasterclass

© Julien Ordan, CERN

Public
universeinthelab_en

Calling all high school #students: Do you want to discover the secrets of the universe? Join us and take part in our one day International Masterclass!
GSI/FAIR in #Darmstadt is hosting this IPPOG event so that students can delve into the fascinating world of particle physics.
You will analyze real data from the ALICE Experiment at the #LHC at #CERN

Sounds exciting? Register now: gsi.de/jobskarriere/angebote_f

#physics #ResearchDay #highschool #students #ALICEmasterclass

© Julien Ordan, CERN

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Chuck Darwin

The Justice Department,
together with the Attorneys General of Maryland, Illinois, New Jersey, and New York,
🔥filed a civil antitrust lawsuit today
⭐️ to block #UnitedHealth Group Incorporated (UnitedHealth)’s proposed
👉 $3.3 billion acquisition of
rival home health and hospice services provider #Amedisys Inc. (Amedisys).

The complaint filed in the District of Maryland alleges that the transaction would
❌ eliminate competition between UnitedHealth and Amedisys (Defendants).

Since UnitedHealth’s prior acquisition of Amedisys’s home health and hospice rival #LHC Group Inc. (LHC) in 2023, Defendants have been two of the largest home health and hospice providers in the United States.

🆘 Eliminating the competition between UnitedHealth and Amedisys would harm patients who receive home health and hospice services, insurers who contract for home health services, and nurses who provide home health and hospice services.

“We are challenging this merger because home health and hospice patients and their families experiencing some of the most difficult moments of their lives deserve affordable, high quality care options,”
said Attorney General #Merrick B. #Garland.

“The Justice Department will not hesitate to check unlawful consolidation and monopolization in the healthcare market that threatens to harm vulnerable patients, their families, and health care workers.”

“Millions of patients depend on United and Amedisys to receive home health and hospice care in the comfort of their homes,”
said Principal Deputy Associate Attorney General Benjamin C. Mizer. “

❇️ The Department’s lawsuit demonstrates our commitment to ensuring that consolidation does not threaten quality, affordability, or wages in these vital healthcare markets.

I commend the staff of the Antitrust Division for their extraordinary work on this matter.”
justice.gov/opa/pr/justice-dep

www.justice.gov · Justice Department Sues to Block UnitedHealth Group’s Acquisition of Home Health and Hospice Provider AmedisysThe Justice Department, together with the Attorneys General of Maryland, Illinois, New Jersey, and New York, filed a civil antitrust lawsuit today to block UnitedHealth Group Incorporated (UnitedHealth)’s proposed $3.3 billion acquisition of rival home health and hospice services provider Amedisys Inc. (Amedisys). The complaint filed in the District of Maryland alleges that the
Public
:rss: Hacker News

ALICE finds first ever evidence of the antimatter partner of hyperhelium-4
home.cern/news/news/physics/al
#ycombinator #physics #CERN #Large_Hadron_Collider #LHC #high_energy_physics #particles #science

CERNALICE finds first ever evidence of the antimatter partner of hyperhelium-4Illustration of the production of antihyperhelium-4 (a bound state of two antiprotons, an antineutron and an antilambda) in lead–lead collisions. (Image: Janik Ditzel for the ALICE collaboration) Collisions between heavy ions at the Large Hadron Collider (LHC) create quark–gluon plasma, a hot and dense state of matter that is thought to have filled the Universe around one millionth of a second after the Big Bang. Heavy-ion collisions also create suitable conditions for the production of atomic nuclei and exotic hypernuclei, as well as their antimatter counterparts, antinuclei and antihypernuclei. Measurements of these forms of matter are important for various purposes, including helping to understand the formation of hadrons from the plasma’s constituent quarks and gluons and the matter–antimatter asymmetry seen in the present-day Universe. Hypernuclei are exotic nuclei formed by a mix of protons, neutrons and hyperons, the latter being unstable particles containing one or more quarks of the strange type. More than 70 years since their discovery in cosmic rays, hypernuclei remain a source of fascination for physicists because they are rarely found in nature and it’s challenging to create and study them in the laboratory. In heavy-ion collisions, hypernuclei are created in significant quantities, but until recently only the lightest hypernucleus, hypertriton, and its antimatter partner, antihypertriton, have been observed. A hypertriton is composed of a proton, a neutron and a lambda (a hyperon containing one strange quark). An antihypertriton is made up of an antiproton, an antineutron and an antilambda. Following hot on the heels of an observation of antihyperhydrogen-4 (a bound state of an antiproton, two antineutrons and an antilambda), reported earlier this year by the STAR collaboration at the Relativistic Heavy Ion Collider (RHIC), the ALICE collaboration at the LHC has now seen the first ever evidence of antihyperhelium-4, which is composed of twoantiprotons, an antineutron and an antilambda. The result has a significance of 3.5 standard deviations and also represents the first evidence of the heaviest antimatter hypernucleus yet at the LHC. The ALICE measurement is based on lead–lead collision data taken in 2018 at an energy of 5.02 teraelectronvolts (TeV) for each colliding pair of nucleons (protons and neutrons). Using a machine-learning technique that outperforms conventional hypernuclei search techniques, the ALICE researchers looked at the data for signals of hyperhydrogen-4, hyperhelium-4 and their antimatter partners. Candidates for (anti)hyperhydrogen-4 were identified by looking for the (anti)helium-4 nucleus and the charged pion into which it decays, whereas candidates for (anti)hyperhelium-4 were identified via its decay into an (anti)helium-3 nucleus, an (anti)proton and a charged pion. In addition to finding evidence of antihyperhelium-4 with a significance of 3.5 standard deviations, as well as evidence of antihyperhydrogen-4 with a significance of 4.5 standard deviations, the ALICE team measured the production yields and masses of both hypernuclei. For both hypernuclei, the measured masses are compatible with the current world-average values. The measured production yields were compared with predictions from the statistical hadronisation model, which provides a good description of the formation of hadrons and nuclei in heavy-ion collisions. This comparison shows that the model’s predictions agree closely with the data if both excited hypernuclear states and ground states are included in the predictions. The results confirm that the statistical hadronisation model can also provide a good description of the production of hypernuclei, which are compact objects with sizes of around 2 femtometres (1 femtometre is 10-15 metres). The researchers also determined the antiparticle-to-particle yield ratios for both hypernuclei and found that they agree with unity within the experimental uncertainties. This agreement is consistent with ALICE’s observation of the equal production of matter and antimatter at LHC energies and adds to the ongoing research into the matter–antimatter imbalance in the Universe.
Public
:rss: Hacker News

Alice finds first ever evidence of the antimatter partner of hyperhelium-4
home.cern/news/news/physics/al
#ycombinator #physics #CERN #Large_Hadron_Collider #LHC #high_energy_physics #particles #science

CERNALICE finds first ever evidence of the antimatter partner of hyperhelium-4Illustration of the production of antihyperhelium-4 (a bound state of two antiprotons, an antineutron and an antilambda) in lead–lead collisions. (Image: Janik Ditzel for the ALICE collaboration) Collisions between heavy ions at the Large Hadron Collider (LHC) create quark–gluon plasma, a hot and dense state of matter that is thought to have filled the Universe around one millionth of a second after the Big Bang. Heavy-ion collisions also create suitable conditions for the production of atomic nuclei and exotic hypernuclei, as well as their antimatter counterparts, antinuclei and antihypernuclei. Measurements of these forms of matter are important for various purposes, including helping to understand the formation of hadrons from the plasma’s constituent quarks and gluons and the matter–antimatter asymmetry seen in the present-day Universe. Hypernuclei are exotic nuclei formed by a mix of protons, neutrons and hyperons, the latter being unstable particles containing one or more quarks of the strange type. More than 70 years since their discovery in cosmic rays, hypernuclei remain a source of fascination for physicists because they are rarely found in nature and it’s challenging to create and study them in the laboratory. In heavy-ion collisions, hypernuclei are created in significant quantities, but until recently only the lightest hypernucleus, hypertriton, and its antimatter partner, antihypertriton, have been observed. A hypertriton is composed of a proton, a neutron and a lambda (a hyperon containing one strange quark). An antihypertriton is made up of an antiproton, an antineutron and an antilambda. Following hot on the heels of an observation of antihyperhydrogen-4 (a bound state of an antiproton, two antineutrons and an antilambda), reported earlier this year by the STAR collaboration at the Relativistic Heavy Ion Collider (RHIC), the ALICE collaboration at the LHC has now seen the first ever evidence of antihyperhelium-4, which is composed of twoantiprotons, an antineutron and an antilambda. The result has a significance of 3.5 standard deviations and also represents the first evidence of the heaviest antimatter hypernucleus yet at the LHC. The ALICE measurement is based on lead–lead collision data taken in 2018 at an energy of 5.02 teraelectronvolts (TeV) for each colliding pair of nucleons (protons and neutrons). Using a machine-learning technique that outperforms conventional hypernuclei search techniques, the ALICE researchers looked at the data for signals of hyperhydrogen-4, hyperhelium-4 and their antimatter partners. Candidates for (anti)hyperhydrogen-4 were identified by looking for the (anti)helium-4 nucleus and the charged pion into which it decays, whereas candidates for (anti)hyperhelium-4 were identified via its decay into an (anti)helium-3 nucleus, an (anti)proton and a charged pion. In addition to finding evidence of antihyperhelium-4 with a significance of 3.5 standard deviations, as well as evidence of antihyperhydrogen-4 with a significance of 4.5 standard deviations, the ALICE team measured the production yields and masses of both hypernuclei. For both hypernuclei, the measured masses are compatible with the current world-average values. The measured production yields were compared with predictions from the statistical hadronisation model, which provides a good description of the formation of hadrons and nuclei in heavy-ion collisions. This comparison shows that the model’s predictions agree closely with the data if both excited hypernuclear states and ground states are included in the predictions. The results confirm that the statistical hadronisation model can also provide a good description of the production of hypernuclei, which are compact objects with sizes of around 2 femtometres (1 femtometre is 10-15 metres). The researchers also determined the antiparticle-to-particle yield ratios for both hypernuclei and found that they agree with unity within the experimental uncertainties. This agreement is consistent with ALICE’s observation of the equal production of matter and antimatter at LHC energies and adds to the ongoing research into the matter–antimatter imbalance in the Universe.
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