Loading...
Alt
03 Jul 2013 | Don Lincoln | Physics
One of the biggest unanswered questions of particle physics is why the mass of the Higgs boson is relatively small when the Standard Model suggests a more natural value would be many thousands of trillions of times higher. We don't know the answer...
READ MORE
Alt
31 May 2013 | Julia Velkovska | Physics
Observing a phenomenon for the first time helps us fine-tune our understanding of the Universe. CMS physicists found such a phenomenon in September 2012 in proton-lead collisions, an observation that has since been reinforced by much more data from...
READ MORE
Alt
02 May 2013 | Alessandra Fanfani | Physics
CMS measures production rates up to high transverse momenta A decade after its unexpected discovery, the properties of the X(3872) exotic resonance are still under intense scrutiny. This state was first seen in 2003 by the Belle experiment and then...
READ MORE
Alt
18 Mar 2013 | Jim Pivarski | Physics
Sometimes, everyday words are co-opted by scientists and used as technical terms. One of these is the word “berry”. Talking to a botanist friend of mine, I learned that tomatoes are berries, but strawberries are not — the scientific meaning of a...
READ MORE
Alt
15 Mar 2013 | Achintya Rao | Physics
Following the results presented at the electroweak session of the annual winter conference, Rencontres de Moriond, CMS has now presented many new results for this week’s quantum chromodynamics (QCD) session. The results include many searches for new...
READ MORE
Alt
05 Mar 2013 | Achintya Rao | Physics
CMS is presenting a wide range of results for the annual winter conference, Rencontres de Moriond. The first week of Moriond — 3–8 March — is devoted primarily to electroweak (EW) studies. Among the CMS results are further studies of the recently...
READ MORE
Alt
18 Jan 2013 | Achintya Rao | Physics
The new year brings a new type of collision at the LHC: the accelerator will smash protons and lead nuclei together, allowing CMS and the other LHC experiments to study the cold nuclear matter we expect these collisions to produce. Although we...
READ MORE
Alt
18 Dec 2012 | Achintya Rao | Physics
In 2011, CMS presented early evidence that Upsilon (Υ) particles produced in lead-lead collisions “melt” as a consequence of interacting with the hot nuclear matter created in these heavy-ion interactions. CMS has since updated and extended this...
READ MORE
Alt
10 Dec 2012 | Achintya Rao | Physics
In the vast particle landscape, there are, to borrow a phrase, known knowns (the Standard Model, for example), unknown unknowns (exotic extensions of the Standard Model and beyond), and those ever-interesting known unknowns. A recent CMS observation...
READ MORE
Alt
22 Nov 2012 | Achintya Rao | Physics
At the Hadron Collider Physics (HCP) Symposium held in Kyoto, Japan on 12–16 November 2012, CMS presented many new results, including updates on the search for the Standard Model (SM) Higgs boson as well as Supersymmetry (SUSY). Several of these...
READ MORE
Alt
30 Oct 2012 | Pedro Vieira De Castro Ferreira Da Silva | Physics
Amongst all known elementary particles, the top quark is peculiar: weighing as much as a Tungsten atom, it completes the so-called 3rd generation of quarks and is the only quark whose properties can be directly measured. Owing to its mass, the top...
READ MORE
Alt
22 Oct 2012 | Wei Li | Physics
CMS has published its first paper on proton-lead (pPb) collisions, describing the observation of a phenomenon that was previously seen first in nucleus-nucleus collisions but also detected by CMS in proton-proton (pp) collisions. The effect is a...
READ MORE