At the dawn of the 1970s, the idea of a massive scalar boson as the keystone of a unified theoretical model of the weak and electromagnetic interactions had yet to become anchored in a field that was still learning to live with what we now know as the standard model of particle physics. As the various breakthroughs of the decade gradually consolidated this theoretical framework, the Brout–Englert–Higgs (BEH) field and its boson emerged as the most promising theoretical model to explain the origin of mass.

As a physicist working at the Large Hadron Collider (LHC) at Cern, one of the most frequent questions I am asked is “When are you going to find something?”. Resisting the temptation to sarcastically reply “Aside from the Higgs boson, which won the Nobel Prize, and a whole slew of new composite particles?”, I realize […]

As a physicist working at the Large Hadron Collider (LHC) at Cern, one of the most frequent questions I am asked is "When are you going to find something?" Resisting the temptation to sarcastically reply "Aside from the Higgs boson, which won the Nobel Prize, and a whole slew of new composite particles?" I realize that the reason the question is posed so often is down to how we have portrayed progress in particle physics to the wider world.

This prototype NIST sensor may help solve some mysteries of the universe by looking beyond the Standard Model.

This prototype NIST sensor may help solve some mysteries of the universe by looking beyond the Standard Model.

A decade ago, physicists wondered whether the discovery of the Higgs boson at Europe’s Large Hadron Collider would point to a new frontier beyond the Standard Model of subatomic particles. So far, that’s not been the case — but a new measurement of a different kind of boson at a different particle collider might do the … Continue reading "Weird! Measurement of W Boson Doesn’t Match Standard Model of Physics" The post Weird! Measurement of W Boson Doesn’t Match Standard Model of Physics appeared first on Universe Today.

Scientists have achieved the most precise measurement to date of the mass of the W boson, one of nature's force-carrying particles. The measured value shows tension with the value expected based on the Standard Model of particle physics.

New measurement for W boson is at odds with previous values

After 10 years of careful analysis and scrutiny, scientists of the CDF collaboration at the U.S. Department of Energy's Fermi National Accelerator Laboratory announced today that they have achieved the most precise measurement to date of the mass of the W boson, one of nature's force-carrying particles. Using data collected by the Collider Detector at Fermilab, or CDF, scientists have now determined the particle's mass with a precision of 0.01%—twice as precise as the previous best measurement. It corresponds to measuring the weight of an 800-pound gorilla to 1.5 ounces.

There are lots of fundamental theories in the world of science, but none of them is as successful

If you ask a physicist like me to explain how the world works, my lazy answer might be: "It follows the Standard Model."

The hunt is on for leptoquarks, particles beyond the limits of the standard model of particle physics —the best description we have so far of the physics that governs the forces of the Universe and its particles. These hypothetical particles could prove useful in explaining experimental and theoretical anomalies observed at particle accelerators such as the Large Hadron Collider (LHC) and could help to unify theories of physics beyond the standard model, if researchers could just spot them.

One of the best chances for proving beyond-the-standard-model physics relies on something called the Cabibbo-Kobayashi-Maskawa (CKM) matrix. The standard model insists that the CKM matrix, which describes the mixing of quarks, should be unitary. But growing evidence suggests that during certain forms of radioactive decay, the unitarity of the CKM matrix might break.

One of the best chances for proving beyond-the-standard-model physics relies on something called the Cabibbo-Kobayashi-Maskawa (CKM) matrix. The standard model insists that the CKM matrix, which describes the mixing of quarks, should be unitary. But growing evidence suggests that during certain forms of radioactive decay, the unitarity of the CKM matrix might break.

Hot on the heels of proving an 87-year-old prediction that matter can be generated directly from light, Rice University physicists and their colleagues have detailed how that process may impact future studies of primordial plasma and physics beyond the Standard Model.

The Standard Model is a sweeping equation that has correctly predicted the results of virtually every experiment ever conducted, as Quanta explores in a new video. The post A Video Tour of the Standard Model first appeared on Quanta Magazine

In spite of decades of research, cancer remains an enigma. Conventional wisdom holds that cancer is driven by random mutations that create aberrant cells that run amok in the body. Researchers challenge this model by proposing that cancer is a type of genetic throwback, that progresses via a series of reversions to ancestral forms of life.

Researchers have used Europe's most powerful high-performance computing (HPC) infrastructure to run new and more precise lattice quantum chromodynamics (lattice QCD) calculations of muons in a magnetic field. The team found a different value for the Standard Model prediction of muon behavior than what was previously accepted.

The discrepancy between the theoretical prediction and the experimentally determined value of the muon's magnetic moment has become slightly stronger with a new result from Fermilab. But what does it... -- Read more on ScientificAmerican.com

Author(s): Priscilla CushmanMeasurements of the muon magnetic moment strengthen a previously reported tension with theoretical predictions, ushering in a new era of precision tests of the standard model. [Physics 14, 54] Published Wed Apr 07, 2021

A new estimation of the strength of the magnetic field around the muon—a sub-atomic particle similar to, but heavier than, an electron—closes the gap between theory and experimental measurements, bringing it in line with the standard model that has guided particle physics for decades.

According to the Standard Model of particle physics, beauty quarks (also known as bottom quarks) should decay into

Scientists have announced 'intriguing' results today that potentially cannot be explained by the current laws of nature.

One of the greatest puzzles in all of physics is that the laws of nature — as we know them, at least — do a remarkably good job of explaining what matter is and how all the different particles interact with one another. And yet, if these only obey the rules that we know, there’s no way to explain why the Universe is so predominantly made up of matter, rather than antimatter. The only interaction we know of that shows any difference at all between particles and their antiparticle counterparts are the weak interactions, and that difference isn’t nearly enough to explain the Universe we observe. But recently, a new set of experiments have started to show a significant difference between the weak decays of rare particles created at the Large Hadron Collider (LHC) at CERN and what our leading theories would have expected. Could this be an enormous clue towards going beyond the Standard Model? That’s what Rob Krol wants to know, writing in to ask: “I want know more about the last

ComputerWeekly’s best articles of the day

Mapping the magnetic field for Fermilab’s Muon g-2 experiment As scientists await the highly anticipated initial results of the

Scientists mapped the magnetic field inside a vacuum with unprecedented accuracy. Results will be used in an experiment to shed light on the Standard Model of particle physics.

As scientists await the highly anticipated initial results of the Muon g-2 experiment at the U.S. Department of Energy's (DOE) Fermi National Accelerator Laboratory, collaborating scientists from DOE's Argonne National Laboratory continue to employ and maintain the unique system that maps the magnetic field in the experiment with unprecedented precision.

Author(s): R. Abbott, T. Blum, P. A. Boyle, M. Bruno, N. H. Christ, D. Hoying, C. Jung, C. Kelly, C. Lehner, R. D. Mawhinney, D. J. Murphy, C. T. Sachrajda, A. Soni, M. Tomii, and T. Wang (RBC and UKQCD Collaborations)A rigorous calculation of a matter-antimatter asymmetry in kaon decays has twice the precision of a previous calculation, removing tension that had existed between theory and experiment. [Phys. Rev. D 102, 054509] Published Thu Sep 17, 2020

kwebb@businessinsider.com (Kevin Webb) / Business Insider: TechSonys PlayStation 5 is coming on November 12 with a $400 digital edition and $500 standard model — - Sonys PlayStation 5 will launch on November 12 with the standard console priced at $500, and a digital edition priced at $400. When you buy through our links, we may earn money from our affiliate partners. Learn more. Read the original article on Business Insider ...

Author(s): Cyrille Solaro, Steffen Meyer, Karin Fisher, Julian C. Berengut, Elina Fuchs, and Michael DrewsenA signal predicted for a type of dark matter appears in the spectra of ytterbium isotopes. [Phys. Rev. Lett. 125, 123003] Published Tue Sep 15, 2020

Wormholes are a popular feature in science fiction, the means through which spacecraft can achieve faster-than-light (FTL) travel and instantaneously move from one point in spacetime to another. And while the General Theory of Relativity forbids the existence of "traversable wormholes," recent research has shown that they are actually possible within the domain of quantum physics.

The best-known particle in the lepton family is the electron, a key building block of matter and central to our understanding of electricity. But the electron is not an only child. It has two heavier siblings, the muon and the tau lepton, and together they are known as the three lepton flavors. According to the Standard Model of particle physics, the only difference between the siblings should be their mass: the muon is about 200 times heavier than the electron, and the tau-lepton is about 17 times heavier than the muon. It is a remarkable feature of the Standard Model that each flavor is equally likely to interact with a W boson, which results from the so-called lepton flavor universality. Lepton flavor universality has been probed in different processes and energy regimes to high precision.

We still don’t know what the mass of a neutrino is, which means there is still lots of exciting work to do, says Chanda Prescod-Weinstein

Once again a new measurement of cosmic expansion is encouraging astronomers to reconsider the standard cosmological model. The

Author(s): Radja Boughezal, Frank Petriello, and Daniel WiegandEffective field theory is used to characterize deviations from the Standard Model, but requires many measurements to explore the large parameter space. In this paper, the authors demonstrate how the upcoming Electron-Ion Collider at Brookhaven National Lab can improve constraints on four-fermion operators in the Standard Model effective field theory approach. Thanks to its expected polarization capabilities the EIC can help disentangle combinations of operators which the LHC can’t resolve. [Phys. Rev. D 101, 116002] Published Tue Jun 02, 2020

Although neutrinos are mysterious particles, they are remarkably common. Billions of neutrinos pass through your body every second.

Researchers of Peter the Great St.Petersburg Polytechnic University (SPbPU) in collaboration with colleagues from the Physikalisch Technische Bundesanstalt

Researchers of Peter the Great St.Petersburg Polytechnic University (SPbPU) in collaboration with colleagues from the Physikalisch Technische Bundesanstalt (PTB) and a number of German scientific...

Researchers of Peter the Great St. Petersburg Polytechnic University (SPbPU) in collaboration with colleagues from the Physikalisch Technische Bundesanstalt (PTB) and a number of German scientific organizations, calculated previously unexplored effects in atoms. The results were published in the Physical Review A, highlighted as an Editor's Choice article.

Tesla is raising the price of the most affordable version of the mass-market Model 3.

Tesla is raising the price of the most affordable version of the mass-market Model 3.

In a new study, researchers at Northwestern, Harvard and Yale universities examined the shape of an electron's charge with unprecedented precision to confirm that it is perfectly spherical. A slightly squashed charge could have indicated unknown, hard-to-detect heavy particles in the electron's presence, a discovery that could have upended the global physics community.

A team of researchers at Penn State University has found new evidence that suggests some particles detected in Antarctica do not fit the Standard Model. They have written a paper outlining their arguments and have posted it on the arXiv preprint server.

Author(s): Thomas D. Cohen, Henry Lamm, and Richard F. LebedPrompted by the unresolved anomalies in semileptonic B meson decays, the authors construct observables sensitive to lepton universality violation. Starting from the fully differential decay rate, one can integrate with carefully chosen weight functions to produce ratios that are independent of hadronic form factors. [Phys. Rev. D 98, 034022] Published Thu Aug 23, 2018

Its apparent infallibility saps the vitality of the field. -- Read more on ScientificAmerican.com

It has successfully predicted many particles, including the Higgs Boson, and has led to 55 Nobels so far, but there’s plenty it still can’t account for -- Read more on ScientificAmerican.com

The Standard Model. What a dull name for the most accurate scientific theory known to human beings. More than a quarter of the Nobel Prizes in physics of the last century are direct inputs to or direct results of the Standard Model. Yet its name suggests that if you can afford a few extra dollars […]

The Standard Model. What dull name for the most accurate scientific theory known to human beings.

Author(s): J. R. Espinosa, D. Racco, and A. RiottoA proposed instability in the Higgs field could have seeded the Universe with primordial black holes that now serve as dark matter. [Phys. Rev. Lett. 120, 121301] Published Fri Mar 23, 2018

Author(s): Anders Andreassen, William Frost, and Matthew D. SchwartzThe authors compute the lifetime of the universe in the Standard Model at next to leading order, obtaining 10 139 years. This involves regularization of the dilatation zero mode. [Phys. Rev. D 97, 056006] Published Mon Mar 12, 2018

Author(s): So Chigusa, Takeo Moroi, and Yutaro ShojiA gauge-invariant calculation of the decay rate of the metastable vacuum removes some theoretical uncertainty in the Universe’s estimated lifetime. [Phys. Rev. Lett. 119, 211801] Published Tue Nov 21, 2017

Modelled on big physics projects, the International Brain Lab will bring together some of the world’s pre-eminent neuroscientists to probe a single behaviour.

Modelled on big physics projects, International Brain Lab will bring together pre-eminent neuroscientists to probe a single behavior -- Read more on ScientificAmerican.com

Astrophysicists made crucial contributions to the galaxy survey, showing that the universe clumps and expands as predicted by our best cosmological models.

Astrophysicists have a fairly accurate understanding of how the universe ages: That's the conclusion of new results from the Dark Energy Survey (DES), a large international science collaboration, including researchers from the Department of Energy's SLAC National Accelerator Laboratory, that put models of cosmic structure formation and evolution to the most precise test yet.

Although the discovery of the Higgs boson by the ATLAS and CMS Collaborations in 2012 completed the Standard Model, many mysteries remain unexplained. For instance, why is the mass of the Higgs boson so much lighter than expected, and why is gravity so weak?

A new type of particle has been discovered by scientists at CERN using data from last year’s run of the Large Hadron Collider (LHC). The particle opens the door to a “new frontier” of physics, providing researchers with a new way to investigate the fundamental forces of the universe that make up the Standard Model of particle physics. Xi-cc++ is a “doubly charmed baryon,” a family of heavy quark particles predicted by the Standard Model, but evidence of which has never before been found.

A new type of particle has been discovered by scientists at CERN using data from last year’s run of the Large Hadron Collider (LHC). The particle opens the door to a “new frontier” of physics, providing researchers with a new way to investigate the fundamental forces of the universe that make up the Standard Model of particle physics. Xi-cc++ is a “doubly charmed baryon,” a family of heavy quark particles predicted by the Standard Model, but evidence of which has never before been found.

It was another good week for physics as an international team of researchers offered new confirmation of Einstein's General Theory of Relativity by using the Hubble Space Telescope to measure shifts in the apparent position of a star. Also, a team of researchers from several institutions in China demonstrated solving systems of linear equations with quantum mechanics—offering more evidence that if true quantum computers are ever made, they will likely be able to fulfill expectations. And a team of physicists reviewed three experiments that hinted at a phenomenon beyond the Standard Model of particle physics.

Scientists reviewed three experiments that hint at a phenomenon beyond the Standard Model of particle physics, outlines a new report.

To anyone but a physicist, it sounds like something out of "Star Trek." But lepton universality is a real thing.

The standard model of particle physics is our best description yet of fundamental particles and their interactions, but it is known to be incomplete. As yet undiscovered particles and interactions might exist. One of the most powerful ways to search for new particles is by

By waiting around for an ultra-rare, hypothetical decay — neutrinoless double beta decay — a long period of time might do what high energies and the LHC can't: break the Standard Model.

Going to higher energies and searching for new fundamental particles is the LHC's approach. But there might be another way to new physics.

Ever since the LHC collided its first protons in 2009, the ATLAS Collaboration has been persistently studying their interactions with increasing precision. To this day, it has always observed them to be as expected by the Standard Model. Though it remains unrefuted, physicists are convinced that a better theory must exist to explain certain fundamental questions: What is the nature of the dark matter? Why is the gravitational force so weak compared to the other forces?

To study some of the tiniest particles in the universe, an international band of over 750 physicists from 23 countries is building a massive instrument. The instrument will smash subatomic particles together and analyze the debris to look for signs of as-yet-unseen particles predicted to be fundamental to the workings of the universe.

Researchers at the LHC beauty experiment (part of CERN) announced new test results that hint at the existence of new physics. The post CERN Declares War On The Standard Model appeared first on Universe Today.

The LHCb experiment finds intriguing anomalies in the way some particles decay. If confirmed, these would be a sign of new physics phenomena not predicted by the Standard Model of particle physics. The observed signal is still of limited statistical significance, but strengthens similar indications from earlier studies. Forthcoming data and follow-up analyses will establish whether these hints are indeed cracks in the Standard Model or a statistical fluctuation.

At the 2017 Moriond conference, the ATLAS Experiment at CERN presented its first results examining the combined 2015/2016 LHC data. Thanks to outstanding performance of the CERN accelerator complex, this new dataset is almost three times larger than that available at ICHEP, the last major particle physics conference held in August 2016.

Scientists from the ATLAS collaboration at the LHC have found evidence for light-by-light scattering, in which two photons interact and change their trajectory. Researchers from DESY, the Johannes Gutenberg University Mainz and the AGH University of Science and Technology in Krakow performed the study.

(Phys.org)—A quartet of researchers has boldly proposed the addition of six new particles to the standard model to explain five enduring problems. In their paper published in the journal Physical Review Letters, Guillermo Ballesteros with Université Paris Saclay, Javier Redondo with Universidad de Zaragoza, Andreas Ringwald with Max-Planck-Institut für Physik and Carlos Tamarit with Durham University describe the six particles they would like to add and why.

(Phys.org)—One of the unanswered questions in particle physics is the hierarchy problem, which has implications for understanding why some of the fundamental forces are so much stronger than others. The strengths of the forces are determined by the masses of their corresponding force-carrying particles (bosons), and these masses in turn are determined by the Higgs field, as measured by the Higgs vacuum expectation value.

Is the standard model of particle physics complete? This question was originally answered on Quora by Jay Wacker.

Statistical analysis of mini-spiral galaxies shows an unexpected interaction between dark matter and ordinary matter. According to a new report, where the relationship is obvious and cannot be explained in a trivial way within the context of the Standard Model, these objects may serve as "portals" to a completely new form of Physics which can explain phenomena like matter and dark energy.

Unless something unexpected happens soon, the LHC may well be humanity's last high-energy collider to discover something new.

In the search for the mysterious dark matter, physicists have used elaborate computer calculations to come up with an outline of the particles of this unknown form of matter. To do this, the scientists extended the successful Standard Model of particle physics which allowed them, among other things, to predict the mass of so-called axions, promising candidates for dark matter. The German-Hungarian team of researchers led by Professor Zoltán Fodor of the University of Wuppertal, Eötvös University in Budapest and Forschungszentrum Jülich carried out its calculations on Jülich's supercomputer JUQUEEN (BlueGene/Q) and presents its results in the journal Nature.

The new base PS4 model will be the PS4 Slim.

Reuters: Company NewsBRIEF-Sony plans to unveil a new playstation 4 standard model alongside a high-end model next month -