CMS Internal Newsletter, Apri 17, 2014
CMS news from the past two weeks:
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Installation and commissioning of the ME4/2 Cathode Strip Chamber
Since March this year new layers of Muon chambers have been added to CMS on both YE3 endcap disks.
Update from Physics Coordination (2014-04-17)
We have had three important events on the “Higgs front” in the past few days:
⁃ Our H→ττ paper (HIG-13-004) is now accepted for publication by JHEP
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Testing the heaviest quark’s interaction with light
The CMS Collaboration has completed the most precise measurement to date of top-quark production in association with a photon
CMS weighs the Higgs boson using flashes of light
The CMS experiment reports a new measurement of the Higgs boson mass in the decay into two photons, improving the precision of this result over earlier measurements by refining detector calibration and new analysis techniques.
CMS observes another indication of a momentary union of the heaviest quarks, now in the lepton + jets final state
The CMS experiment provides the first confirmation of the excess observed in top quark-antiquark production that is consistent with the short-lived bound state – toponium – decaying to a lepton + jets final state.
Does the Higgs look a little odd lately?
The CMS experiment has performed a new search for Charge-Parity violation in Higgs boson decays to tau leptons, shedding light on the origin of matter.
Unlocking the vault of new physics
In Run 3, CMS expanded its trigger program to enhance capturing long-lived particles that decay far away from the point of collision – broadening the search for physics beyond the Standard Model.