CMS 2012 data exceed 2011 sample

LHC has delivered 6.65 fb⁻¹ of collisions to CMS in 2012 so far

While the LHC will play the starring role in the 2013/2014 Long Shutdown (LS1), the break will also be a chance for its experiments to upgrade their detectors.

The search for microscopic black holes at the LHC is motivated by the hierarchy problem — the huge observed difference between the strengths of the electroweak and gravitational forces.

A measurement of the underlying event (UE) activity in proton-proton collisions at a centre-of-mass energy of 7 TeV is performed using Drell-Yan events in a data sample corresponding to an integrated luminosity of 2.2 fb⁻¹

Another day, another particle. Unlike the Higgs boson, the neutral Xi_b baryon is not expected to solve any deep, outstanding mysteries. But, sightings of its excited state are another first for the Large Hadron Collider (LHC) at CERN near Geneva, Switzerland.

Physicists using the Large Hadron Collider (LHC) particle accelerator have discovered their first brand-new baryon, a particle consisting of three quarks.

A never-before-seen subatomic particle has popped into existence inside the world's largest atom smasher, bringing physicists a step closer to unraveling the mystery of how matter is put together in the universe.

Researchers at the Large Hadron Collider submitted a paper to Physical Review Letters claiming that they’d discovered a new Baryon particle. This is the Xi_b^*0 – which is composed of three quarks: a strange quark, a beauty quark, and an up quark.

Scientists running the Large Hadron Collider, aka the "big bang machine", announced Friday they've discovered a brand new particle during one of their experiments.

It has not discovered the Higgs Boson — not yet, anyway — but the Large Hadron Collider (LHC) particle accelerator has revealed a never-before-discovered particle comprised of three quarks.

Observation of a new beauty particle

New, excited Ξ^*_b⁰ baryon observed with more than 5 standard deviations significance at a mass of 5945.0 ± 2.8 MeV.

No, unfortunately not yet the discovery of the century. Still, the new particle found by CMS in its 2011 dataset is a very important piece of the puzzle of low-energy spectroscopy.

An application using real event data from CMS has won “Best Science” prize in a public “Science Hack Day” held in Nairobi between 13^th and 15^th April 2012.

Tejinder (Jim) Virdee, CMS co-founder and former Spokesperson (2006-2010), was today elected as Fellow of the prestigious Royal Society of the UK.

The Year-End Technical Stop or YETS, when the LHC takes its annual break, seemed like a quiet time to those outside CERN. After all, there were no collisions taking place and the CMS detector was not operating 24-hours-a-day, seven-days-a-week.

A new year with new energy and new luminosities: 2012 holds the promise to close the question on the existence (or absence) of a Standard Model Higgs boson.

As high-energy particle physics pushes exploration at energy and luminosity frontiers, experiments are becoming increasingly complex – and this, in turn, drives the need for developments in particle detectors and their associated technologies.

The Large Hadron Collider has woken from its winter slumber with a bang.

THE world's largest particle collider notched up a new record yesterday as it escalated its quest to explore the origins of the Universe.

The Large Hadron Collider (LHC) is operating again after its winter break.

A search is presented for a massive particle, generically referred to as a Z′, decaying into a t-tbar pair.

The production of b jets in association with a Z/γ^* boson is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7 TeV and recorded by the CMS detector.

CMS has just recorded the first collisions with stable beams at a world-record collision energy of 8 TeV.

Results are presented from a search for heavy bottom-like quarks, produced in pairs in pp collisions at √s = 7 TeV, undertaken with the CMS experiment at the LHC. The b′ quarks are assumed to decay exclusively to a top quark and a W boson (tW).

Results are presented from a search for new physics in which the final state contains a photon (γ) and missing transverse energy (ME_T).

A study of dijet production in proton-proton collisions was performed at √s = 7 TeV for jets with p_T > 35 GeV and |y| < 4.7[1] using data collected with the CMS detector at the LHC in 2010.

From the BBC: 'Jim [Al-Khalili] talks [to] CERN physicist, Tejinder Virdee about the search for the elusive Higgs boson, also known as the "God particle".

The LHC provides CMS with millions of collisions each second, and a wealth of physics data is obtained from the proton-proton interactions. In order to record all these data for analyses, all CMS sub-detectors have to be performing optimally.

On Monday, 12^th March 2012, 16 high-school students from Annecy, France awoke with excitement; they knew it was not going to be an ordinary day!