About
With a value of about 4 MeV, the total width of the Higgs boson in the Standard Model is not accessible via direct measurements at the LHC as the experimental resolution is around 1 GeV.
Instead, a comparison of off-shell and on-shell Higgs boson production can reveal the value of the width under mild assumptions on the Higgs boson couplings. This seminar presents a new measurement of the Higgs boson off-shell production and its natural width based on the full Run 2 pp dataset collected at 13 TeV. The measurement exploits the gluon-fusion and vector-boson fusion production modes, and the decays channels into ZZ→4l and ZZ→2l2v. The background-only hypothesis is rejected with an observed (expected) significance of 3.2 (2.4) 𝜎, which marks the experimental evidence of off-shell Higgs production.
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0:00:00 Slide 1
0:01:50 Slide 2
0:10:32 Slide 3
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0:40:51 Slide 9
The talk
Credits and licence
- Institution
- CERN
- Department
- LHC Seminar
- Speaker
- Rafael Coelho Lopes De Sa
- Year
- 2022
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed