Events

NPAC (Nuclear/Particle/Astro/Cosmo) Forums

<< Summer 2017 Fall 2017 Spring 2018 >>
Subscribe your calendar or receive email announcements of events

Organized by: Prof. Lu Lu


Evidence for the Higgs Boson Decay to a Bottom Quark-Antiquark Pair
Date: Tuesday, December 12th
Time: 2:30 pm
Place: 4274 Chamberlin Hall
Speaker: Stephane Cooperstein, Princeton
Abstract: A search for the standard model (SM) Higgs boson (H) decaying to bb when produced in association with an electroweak vector boson is reported for the following processes: Z(νν)H, W(μν)H, W(eν)H, Z(μμ)H, and Z(ee)H. The search is performed in data samples corresponding to an integrated luminosity of 35.9 fb−1 at √s = 13 TeV recorded by the CMS experiment at the LHC during Run 2 in 2016. An excess of events is observed in data compared to the expectation in the absence of a H → bb signal. The significance of this excess is 3.3 standard deviations, where the expectation from SM Higgs boson production is 2.8. The signal strength corresponding to this excess, relative to that of the SM Higgs boson production, is 1.2 ± 0.4. When combined with the Run 1 measurement of the same processes, the signal significance is 3.8 standard deviations with 3.8 expected. The corresponding signal strength, relative to that of the SM Higgs boson, is 1.06+0.31. −0.29
Host: Sridhara Dasu
Add this event to your calendar