CMS precisely measures the mass of the Higgs boson

Categories: CMS/LHC, Energy Frontier
Published on: November 13, 2019
Event in which a candidate Standard Model Higgs boson decays into two photons indicated by the green towers representing energy deposited in the electromagnetic calorimeter.

Tthe CMS Collaboration has just announced the most precise measurement of the Higgs boson’s mass achieved so far.  CMS physicists recently measured the mass of the Higgs boson to be 125.35 GeV with a precision of 0.15 GeV, an uncertainty of roughly 0.1%!  This very high precision was achieved thanks to the enormous amount of work spent over many years to carefully calibrate and model the CMS detector when it measures the particles necessary for this measurement (electrons, muons, and photons).

By the CMS Collaboration. You can read this article at the CERN web site.

Origins of mass: It’s not what you think

Categories: Physics in a Nutshell
Published on: January 1, 2017

The Higgs Boson does not account for all of the mass in the Universe.

http://news.fnal.gov/2012/01/origins-of-mass-it-s-not-what-you-think/, by Don Lincoln.

Lepton flavor violation: the search for mismatched Higgs boson decays at CMS

Categories: CMS/LHC
Published on: October 16, 2016

Can the Higgs boson participate in lepton-number violation?

http://news.fnal.gov/2016/09/lepton-flavor-violation-search-mismatched-higgs-boson-decays-cms/, by Bo Jayatilaka.

Importance of multivariate analysis

Categories: CDF, Energy Frontier
Published on: July 22, 2016

These physicists were responsible for this analysis. From left: Giorgio Chiarelli, Sandra Leone and Federico Sforza, all from INFN (University of Pisa).

Disentangling signal from background in the CDF Higgs Boson data.

http://news.fnal.gov/2016/07/importance-multivariate-analysis/, by Andy Beretvas and Giorgio Chiarelli

Busy bees

Categories: CMS/LHC
Published on: May 15, 2016

Looking for exceptionally heavy particles decay into two Higgs bosons, which would preferentially decay into four B quarks.

http://news.fnal.gov/2016/03/busy-bees/, by Don Lincoln.

Search for a fermiophobic Higgs

Categories: CMS/LHC, Energy Frontier
Published on: February 25, 2016

CMS and Atlas at CERN found everything was consistent with Standard Model predictions.

http://news.fnal.gov/2016/01/search-for-a-fermiophobic-higgs/, by Andy Beretvas and Yoshi Seiya

Shedding light on the invisible Higgs

Categories: CMS/LHC, Energy Frontier
Published on: September 10, 2015

Are there other decay modes of the Higgs, wherein they decay into invisible particles?

http://www.fnal.gov/pub/today/archive/archive_2015/today15-07-31.html, by Jim Pivarski.

Two Higgs are better than one

Categories: CMS/LHC, Energy Frontier
Published on: April 19, 2015

Can CMS see heavy gravitons, which decay into a pair of Higgs bosons?

http://www.fnal.gov/pub/today/archive/archive_2015/today15-04-10.html, by Don Lincoln.

Rule of three

Categories: CMS/LHC, Cosmic Frontier
Published on: April 10, 2015

CMS seems to see a decay mode of the Higgs boson that indicates the Higgs can mix leptons of different flavors.

http://www.fnal.gov/pub/today/archive/archive_2015/today15-03-27.html, by Jim Pivarski.

I remember when …

Categories: CMS/LHC, Energy Frontier
Published on: March 31, 2015

SuperNova-graphic

University of Rochester physicist Roberto Covarelli

CMS scientists are using the Higgs Boson to look deeper into the Standard Model

http://www.fnal.gov/pub/today/archive/archive_2015/today15-03-13.html,  by Don Lincoln.

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