Les Houches
2023 Session

 Use of wiki pages and slack. Wifi access/setup.
 Important info about bus, lodging, facilities.
 Bulletins.
Wikis of Previous sessions
Les Houches Themes
(Lyrics and Music)
(Lyrics and Music)
Goal  create a short document recommending:
1) How to present effective direct detection cross section limits from monojet (or monoanything) searches while making clear the limits of the effective theory and the role of a light mediator mass.
2) What is the most useful set of operators to present results for, and how can the results be presented to be most useful for recasting to a full model.
Interested people:
Name  

Kiel Howe  howek@stanford.edu 
Brian Shuve  bshuve@perimeterinstitute.ca 
Gordan Krnjaic  gkrnjaic@perimeterinstitute.ca 
Andreas Goudelis  andreas.goudelis@lapth.cnrs.fr 
Csaba Balazs  csaba.balazs@monash.edu 
Yun Jiang  yunjiang@ucdavis.edu 
Alex Arbey  alexandre.arbey@enslyon.fr 
Fawzi Boudjema  boudjema@lapth.cnrs.fr 
Goal  determine the best set of cuts to study ISR + MET final states for single insertions of effective Dark Matter operators (for example, the Harnik et. al. razor recast)
Interested people:
Name  

Marija Marjanovic  marija.marjanovic@cern.ch 
Goal  in the region where monojet constraints allow fairly large couplings of mediators, are there other unexplored channels to look in? Possible examples:
Should we tie this in with paired resonances working group?
Interested people:
Name  

Kiel Howe  howek@stanford.edu 
Brian Shuve  bshuve@perimeterinstitute.ca 
Andreas Goudelis  andreas.goudelis@lapth.cnrs.fr 
Aoife Bharucha  aoife.bharucha@desy.de 
Gordan Krnjaic  gkrnjaic@perimeterinstitute.ca 
Goal  the monojet searches at the LHC are currently reinterpreted (in a simple effective model with one mediator and one DM particle) in terms of dark matter scattering crosssections with matter, as in direct detection experiments. Can we set also limits on indirect detection (gamma, proton, antiproton spectra)? And can we deduce a lower limit on the relic density? Additional questions:
Interested people:
Name  

Alex Arbey  alexandre.arbey@enslyon.fr 
Genevieve Belanger  belanger@lapth.cnrs.fr 
Andreas Goudelis  andreas.goudelis@lapth.cnrs.fr 
Nazila Mahmoudi  nazila@cern.ch 
Sacha Pukhov  pukhov@lapth.cnrs.fr 
Yun Jiang  yunjiang@ucdavis.edu 
Csaba Balazs  csaba.balazs@monash.edu 
Fawzi Boudjema  boudjema@lapth.cnrs.fr 
Questions:
References:
LHC limits:
Effective DM theory:
Mediator production:
$\sigma_{LHC}(pp \to \chi \bar{\chi} +X)\sim \left\frac{g_q g_\chi E}{(sM_X^2)+iM_X\Gamma_X/2}\right^2 \sim \frac{1}{\Lambda^4}$
where $E$ is of order the partonic centerofmass energy.
Two regions to study/search