SnowMass2021

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======  EF01: EW Physics: Higgs Boson properties and couplings ======

| Conveners | [[sallydawsonbnl@gmail.com,korytov@phys.ufl.edu,caterina@slac.stanford.edu?subject=Snowmass EF01|Sally Dawson, Andrey Korytov, Caterina Vernieri]] |
| Mailing-list | <SNOWMASS-EF-01-HIGGS_PROPERTIES@FNAL.GOV> ([[https://snowmass21.org/energy/start#communications|instructions]]) |
| Slack channel | [[https://app.slack.com/client/TNNU4A570/C0125HAN6B0/details/top?cdn_fallback=2|ef01-higgs_properties]] ([[https://snowmass21.org/energy/start#communications|instructions]]) |
|Next Meeting |[[https://indico.fnal.gov/event/51806/|Feb 9]], last meeting before mid-March deadline|



EF01 studies Higgs properties, including mass, width, and couplings, at proposed future colliders including pp, e+e-, and ep machines. Double Higgs production and subsequent limits on the Higgs self-coupling are included in the EF01 activities, along with the combination of measurements of single and double Higgs production. 

======  Group Topics ====== 

  * Higgs mass and width 
  * Higgs decays  (includes H to invisible and rare decays)
  * Higgs production modes: inclusive and differential measurements (includes ttH)
  * HH production (includes resonant production)
  * Higgs self-coupling 
  * Anomalous couplings (including CP violation)
  * Inputs to the Global Fit

These topics will benefit from the synergies with other topical groups . All groups commit to working together to ensure the least possible duplication and a full sharing of information. Cross-group topics are:

  * Flavor violating Higgs production and decays  ([[higgs_bsm|EF02 - EW Physics: Higgs Boson as a portal to new physics]])
  * (SM)EFT analyses of Higgs observables  ([[ewk|EF04 - EW Precision Physics and constraining new physics]])
  * Effect on Higgs couplings to fermions/bosons and on the Higgs width from extending the scalar sector ([[higgs_bsm|EF02 - EW Physics: Higgs Boson as a portal to new physics]])

====== Contributions ======

Please express your interest in either performing a study or join studies in a particular area, using this [[https://forms.gle/aDrudwhtf3Y9TRcq7| simple google form]].

Feel free to [[sallydawsonbnl@gmail.com,korytov@phys.ufl.edu,caterina@slac.stanford.edu?subject=Snowmass EF01|email us]] if you want to give a presentation at one of the upcoming meetings.

======   Relevant literature ====== 

An updated list of published studies on Higgs boson properties at future colliders can be found [[https://docs.google.com/document/d/1-mukck3YR5ecwg600wvdB4HCHaQvX-Bisgogl_iDjRE/edit?usp=sharing
|here]]


======  Meetings ====== 

Wednesdays noon-2PM Eastern Time.
  * May 13, 2020, [[https://indico.fnal.gov/event/24382/| EF01 Kick-off Meeting]] , [[ https://projects-docdb.fnal.gov/cgi-bin/ShowDocument?docid=6957|**recording**]]
  * May 27, 2020, [[https://indico.fnal.gov/event/43278/|  joint with EF02]], [[ https://projects-docdb.fnal.gov/cgi-bin/ShowDocument?docid=6960|**recording**]]
  * June 24, 2020, [[https://indico.fnal.gov/event/43279/| Differential Higgs measurements, CP violating Higgs Couplings]], [[ https://projects-docdb.fnal.gov/cgi-bin/ShowDocument?docid=6963|**recording**]]
  * July 7,8, 2020 [[https://indico.fnal.gov/event/43959/timetable/#20200707| EF Preparatory Joint Sessions]]
  * July 20-22, 2020 [[https://indico.fnal.gov/event/43963/timetable/#20200720.detailed| EF workshop: Open Questions and New Ideas]]
  * Aug. 5, 2020 [[https://indico.fnal.gov/event/44249/|EF01 meeting, Higgs mass and width, ttHH, H to invisible]], [[https://projects-docdb.fnal.gov/cgi-bin//ShowDocument?docid=7042|**recording**]]
  * Sept. 2, 2020 [[https://indico.fnal.gov/event/44636/timetable/#20200902/|EF01 meeting, Measuring the electron Yukawa coupling]],   [[https://projects-docdb.fnal.gov/cgi-bin//ShowDocument?docid=7237|**recording**]]
  * Sept. 15, 2020 ,  [[https://indico.fnal.gov/event/44932/|EF01, EF02 meeting, Discussion of HH Benchmarks]], [[https://projects-docdb.fnal.gov/cgi-bin//ShowDocument?docid=7249|**recording**]]
  * Sept.  24, 2020, Joint with EF04,   [[https://indico.fnal.gov/event/45025/|Discussion of SMEFT fits for Snowmass]], [[https://projects-docdb.fnal.gov/cgi-bin/ShowDocument?docid=7258|**recording**]]
Thursdays 10 am-noon Eastern Time.
  * Oct. 22, 2020,  [[https://indico.fnal.gov/event/45835/|CP properties and HH]], [[https://projects-docdb.fnal.gov/cgi-bin//ShowDocument?docid=7292|*recording**]]
  * Nov. 5, 2020, [[https://indico.fnal.gov/event/45873/| Higgs invisible and couplings]], [[https://projects-docdb.fnal.gov/cgi-bin//ShowDocument?docid=7319|*recording*]]
  * Nov. 19, 2020 [[https://indico.fnal.gov/event/46528|Detector requirements]], [[https://stanford.zoom.us/rec/share/Ztub1y7R4QBveuwnytKM-VYciwfCehbvrMnWl6m1zP9ViI4Yif5dR6Fku-g-8Oec.9Jj81r6vOhcVAcpn |*recording*]]
  *  Dec. 10, 2020 [[https://indico.fnal.gov/event/46712/|Higgs at Muon collider]], [[https://stanford.zoom.us/rec/share/INIpCfy4NrJMyTyCYYijOHPjC05nJWjQSqLSRrC9PUTbTTR8G0-OLFhVKL7nN9cq.FpYbsFYH-dAELQRA|*recording*]]
  *  Apr. 15, 2021  [[https://indico.fnal.gov/event/48485/ | HH benchamarks ]]
  *  Aug. 18, 2021  [[https://indico.fnal.gov/event/49921/ | Higgs inverse problem, interference ]], [[https://stanford.zoom.us/rec/share/mRU3s--hDfHdGrsE5bclTpRqMoaVtjykvHT3aZEnlcQg0GDx4S4d39okyzQJr5po.7GobZJIJV-NSamm4 | *recording*]]
  *  Sep. 15, 2021  [[https://indico.fnal.gov/event/49922/| Higgs and light Yukawa, Xcc gamma-gamma collider ]], [[https://stanford.zoom.us/rec/share/hGuucXEdaD7fapsr-BVWVD2Wwy3lhAV5RtrK0AsRwlAHSq765iM1wbmv4sw25ixa.R5e20W_uAQ_7I2zt | *recording*]]
  *  Nov. 3 , 2021  [[https://indico.fnal.gov/event/51170/| Update on LOIs ]], [[https://stanford.zoom.us/rec/share/A8EXsR-mjkXVwoTTgroTXCC03x0hSb6rCfZo_WzCmWDq8OBT7Ztb_3yr6UmTq2qM.DC1jbTI9MeEnfS0o | *recording*]]
  *  Jan. 12, 2022  [[https://indico.fnal.gov/event/51804/| Update on LOIs]], [[https://stanford.zoom.us/rec/share/kNjXARhlvq6Ye35bo5JTJdMHfaFl-5Bv4Fj_uvvXbvFS7miIKlLTY9ej1awOsoDt.a7xfaU9kLWeiF32x| *recording*]]


======  Submitted LOI ====== 
Letters of Intent submitted to Energy Frontier (as primary frontier) [[https://www.snowmass21.org/docs/files/?dir=summaries/EF| shown in this link]]. Here is the list of submitted LOIs that include EF as primary or secondary topic. 
 First index before "/"  corresponds to the primary frontier used for the submission.
 {{url>https://www.snowmass21.org/docs/files/list.php?frontier=EF1  noborder 100%,2000px}}