Physics

A 4.3σ Signal Of Dimuon Decays Of The Bs Meson!

Today I am quite happy to report of a new groundbreaking result from the CMS collaboration at the CERN LHC- the experiment to which I devote 100% of my research time. We published overnight a report on the Cornell arxiv, and will present this week at the E ...

Article - Tommaso Dorigo - Jul 19 2013 - 12:37pm

Do Measurements Of The B_d Decay To Muon Pairs Indicate Four Generations Of Matter?

I reported two days ago on the new measurements by the CMS Collaboration of the decay of B hadrons into muon pairs, revealed at the opening of the EPS 2013 conference in Stockholm and in a preprint. Funnily, I wrote the piece oblivious of the LHCb result, ...

Article - Tommaso Dorigo - Jul 22 2013 - 2:13pm

Wanted: 'Schroedinger Cat' With A Bigger Meow

Since 1935, when Austrian physicist Erwin Schrödinger created his famous thought experiment about a cat that was both alive and dead, physicists have tried to create large scale systems to test how the rules of quantum mechanics apply to everyday objects. ...

Article - News Staff - Jul 21 2013 - 3:00pm

A Four-Sigma Evidence Of New Physics In Rare B Decays Found By LHCb, And Its Interpretation

Today I received news of an interesting measurement of angular distributions of the decay products in the rare decay of the B meson to  a K* and a muon pair- one of the specialties of the LHCb collaboration, which has more horse-power in some of these low- ...

Article - Tommaso Dorigo - Jul 24 2013 - 1:31pm

The Plot Of The Week- Top And W Boson Masses

The CDF and DZERO experiments recently produced a combination of their precision measurements of the W boson mass, and proceeded to include the LEP II results to obtain a "world average" of that very important parameter of the Standard Model. The ...

Article - Tommaso Dorigo - Aug 1 2013 - 7:56am

B Meson: New Physics Gets Some Confirmation, Say Researchers

The Standard Model has some gaps and is unable to explain phenomena like dark matter or gravitational interaction between particles. Some physicists are seeking what they call "New Physics", something more fundamental, but there has been no direc ...

Article - News Staff - Aug 1 2013 - 10:21am

Including The MSSM

Two days ago I showed how the measurements produced in the course of the last decade have allowed us to "zoom into" the parameter space of the Standard Model, pinpointing the W boson, top quark, and Higgs boson masses to a very narrow 3-D volume ...

Article - Tommaso Dorigo - Aug 3 2013 - 5:53am

Useful Entanglement: How To Witness Quantum Measurement

For quantum physicists working on future systems, entangling quantum systems is a key resource for upcoming quantum computers and simulators. Physicists have crafted a new, reliable method to verify entanglement in the laboratory using a minimal number of ...

Article - News Staff - Aug 5 2013 - 10:05am

Top Mass Measurements: The Status

In the past few weeks the Tevatron and LHC experiments have updated their results on some of the most important Standard Model parameters. Of these, notably the top quark mass is one where the Tevatron is still doing slightly better than the LHC, due to th ...

Article - Tommaso Dorigo - Aug 6 2013 - 10:44am

Atomic Clock Can Simulate Quantum Magnetism

Researchers have used an atomic clock as a quantum simulator, mimicking the behavior of a different, more complex quantum system, joining a growing list of physical systems that can be used for modeling and perhaps eventually explaining the quantum mechan ...

Article - News Staff - Aug 8 2013 - 5:54pm