Higgs & Top at LHeC

Monday 6 Feb 2017, 11:00 → 13:00 Europe/Zurich

CERN

CERN - Tokyo - Liverpool - Johannesburg - Beijing - Hamburg

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Satoshi ran his analysis using the new versions of MadGraph, Delphes and
corresponding input card. The jet Pt and Etmiss significantly reduced,
and we discussed
about the possible cause.  We will exchange the actual cards used and
continue investigation.

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--> Kechen showed his preliminary results when searching for SUSY dark matters at FCC-eh.
Some kinematical distributions at parton level for both signal and backgrounds are presented.
--> Based on these observables, after applying a set cuts, the wino dark matter with 200 GeV mass can be found at 3.2-sigma significance with unpolarized electron beam and at 2.6 sigma significance with polarized electron beam for luminosity 1000 fb^-1.
--> Since these are just the preliminary results, more things (like more backgrounds check, detector simulation, etc.) need to be finished.
--> Kechen also found that compared the distributions for polarized electron beam with that for unpolarized beam, to one's surprise, the polarized beam also changed some kinematical distributions (like MET, eta(e-), M_T(met, e^-), M_T(met, e^- + j) ), besides enhancing the production cross sections.
This might be "unphysical". If it is physical, it should mean that the differential cross sections are different between unpolarized and polarized electron beam for the production processes.
Kechen will check the reason.

11:00 → 11:10 Update on invisible decay study

Speaker: Satoshi Kawaguchi (Tokyo Institute of Technology (JP))

11:10 → 11:20 Hbb coupling measurement

Speaker: Masahiro Tanaka (Tokyo Institute of Technology (JP))

11:20 → 11:30 Exotic Higgs, Hbb and Hcc using jet lifetime probabilities

Speaker: Uta Klein (University of Liverpool (GB))

11:30 → 11:40 H to phiphi to 4b

Speaker: Mr Chen Zhang (Peking University)

11:40 → 11:50 Status of RPC SUSY

Speaker: Dr Kechen Wang (DESY / IHEP)

susyDM_wino200_5.pdf

--> Kechen showed his preliminary results when searching for SUSY dark matters at FCC-eh.
Some kinematical distributions at parton level for both signal and backgrounds are presented.

--> Based on these observables, after applying a set cuts, the wino dark matter with 200 GeV mass can be found at 3.2-sigma significance with unpolarized electron beam and at 2.6 sigma significance with polarized electron beam for luminosity 1000 fb^-1.

 

--> Since these are just the preliminary results, more things (like more backgrounds check, detector simulation, etc.) need to be finished.

 

--> Kechen also found that compared the distributions for polarized electron beam with that for unpolarized beam, to one's surprise, the polarized beam also changed some kinematical distributions (like MET, eta(e-), M_T(met, e^-), M_T(met, e^- + j) ), besides enhancing the production cross sections.

This might be "unphysical". If it is physical, it should mean that the differential cross sections are different between unpolarized and polarized electron beam for the production processes.

Kechen will check the reason.

 

--> You are welcome to give your comments or suggestions.

 

11:50 → 12:00 Status of Wits Studies

Speakers: Mukesh Kumar (University of the Witwatersrand (ZA)), Xifeng Ruan (University of the Witwatersrand (ZA))

12:00 → 12:10 FCNC top-Higgs couplings

Speaker: hao sun (DaLian University of Technology)

12:10 → 12:20 Top-q-gamma FCNC

Speakers: Orhan CAKIR (Ankara University), Orhan Cakir (University of Ankara), Orhan Cakir (University of Ankara (TR)), Prof. Orhan Cakir (Ankara University (TR)), Orhan Cakir (University of Ankara (TR))