WG3: Extended Scalars meeting

Tuesday 13 Mar 2018, 14:00 → 16:00 Europe/Zurich

Vidyo only (CERN)

Action items:

1) Produce tables of Drell-Yan cross sections (LO, NLO, NNLO?) for all charge combinations of H5 states, for pp centre-of-mass energy of 13 TeV (first priority); also 14 TeV would be nice.  We can take all the H5 charge states as degenerate in mass. **Do we also want cross sections for H5+H3 or H3+H3 or H+H3?

For the mass range, we could start at 70 GeV (a bit below the theorist-produced lower bound on the H5++ from like-sign dimuons). **Is there a good reason to start at even lower masses for more model-independent limits in other modes?

The calculation of cross sections should go up to masses such that all the cross sections drop below 1/300 fb.  **Is this reasonable?

2) Theorists will come up with a prioritized list of channels.  Then we can identify channels that are not covered by other searches.  It will also be nice to have some "target" branching ratios to compare to the experimental sensitivity.

14:00 → 14:05 Introduction

Speakers: Heather Logan (Carleton University), Dr Raffaele Angelo Gerosa (Univ. of California San Diego (US)), Rui Santos (IST), Shufang Su (University of Arizona), Xiangyang Ju (University of Wisconsin Madison (US)), Xiaohu Sun (University of Alberta (CA))

14:05 → 14:25 Drell-Yan H5^0 --> gamma gamma

Speaker: Roberto Vega-Morales

ExtendedHiggsMeeting.pdf

14:25 → 14:45 H5+ --> W+ gamma theory

Speaker: Yongcheng Wu

H5WGAinGM_ycwu_20180313.pdf

14:45 → 15:05 H5+ --> W+ gamma experiment

Speakers: Brigitte Vachon, Kays Haddad, Kays Haddad (McGill University, (CA))

Charged Higgs Group Pres.pdf

15:05 → 15:25 Drell-Yan H5^++ --> W+ W+ --> like-sign leptons

Speaker: Heather Logan (Carleton University)

H5pp-to-leptons.pdf

15:25 → 15:35 Discussion