News Archives – Page 91 of 246

Summary of the upper limits at 95% confidence level on flavour-changing

CMS investigates the width of the top quark

Twenty years after its discovery at the Tevatron collider at Fermilab, interest in studying the top quark at the LHC is higher than ever.

LHCb targets new source of CP violation

The LHCb collaboration presented new results at the 8th International Workshop on Charm Physics (Charm 2016), which took place in Bologna on 5 to 9 September. Among various novelties, the collaboratio...

ALICE explores shear viscosity in QCD matter

One of the key goals in exploring the properties of QCD matter is to pin down the temperature dependence of the shear-viscosity to entropy-density ratio (η/s). In the limit of a weakly interactin...

Gaia compiles largest ever stellar survey

On 13 September, 1000 days after the satellite’s launch, the Gaia team published a preliminary catalogue of more than a billion stars.

Proton-radius puzzle deepens

The international CREMA (Charge Radius Experiment with Muonic Atoms) collaboration has measured the radius of the deuteron more accurately than ever before, finding that it is significantly smaller th...

DIRAC experiment observes new exotic atom

Inclusive πK production via the interaction p + Ni → π−K+ + X. The ionisation or break up of AKπ leads to so-called atomic pairs. Image credit: arXiv:1605.06103v1.  The DIRAC (DIm...

AMS reports unexpected result in antiproton data

AMS has now measured the antiproton flux and the antiproton-to-proton flux ratio in primary cosmic rays with unprecedented precision.

LHC hits 2016 luminosity target

At the end of August, two months ahead of schedule, the integrated luminosity delivered by the LHC reached the 2016 target value of 25 fb–1 in both the ATLAS and CMS experiments. The milest...