Extending the SUSY Les Houches Accord

1
Extending the SUSY Les Houches Accord

• P. Skands (Fermilab)

SUSY EuroGDR, November 2005, Barcelona
2
SUSY Les Houches Accord

• SUSY ? Lots of models, lots of tools, lots of
  conventions

• Les Houches ? Lots of people, lots of discussions

• Accord ? Lots of models, lots of tools, ONE
  convention

Writeup in JHEP 0407036,2004
3
SUSY Les Houches Accord
? ? ? ?
? ? ? ? ? ?
? ? ? ? ? ?
? ? ? ?
? ? ?
?
F77 I/O Library by T. Hahn
FITTERS
?
?
FITTINO, SFITTER
4
The SLHA Conventions

• Experimental boundary conditions
• SM gauge couplings and Yukawas (measured)
• ? MSSM couplings and Yukawas (not the same,
  since different field content ? different quantum
  corrections)

• Superpotential (at scale Q (normally MGUT) in
  DRbar)

• SUSY Breaking Terms (at scale Q in DRbar)

5
How to Generalise?MSSM
6
How to Generalise?MSSM

• Work out physical Spectrum
• Pole masses,
• Imaginary sneutrinos (codes 1000017,
  1000018,1000019?)
• EW scale Lagrangian parameters
• Need to specify all Lagrangian couplings
• effective vertices?
• EW scale mixings
• CPVRPVFLV ? basically, every state with same
  colour, spin, and EM charge can mix! OK, so we do
  that.

7
How to Generalise?Mixing

• Charged colour-singlet fermions

Flavour basis e e flavour eigenstate mu
mu -- tau tau -- -i w charged wino
h2 charged higgsino (up-type)
Mass basis (PDG codes), ordered to reduce to
normal case -11 (e) state that has biggest
component of e -13 (mu)
-- mu -15 (tau) --
tau 1000027 (chi1) lightest
chargino-like state 1000037 (chi2) heaviest
chargino-like state
8
How to Generalise?NMSSM
Cf. NMHDecay, Ellwanger, Gunion, Hugonie (talk by
Ellwanger here)

• Superpotential (at scale Q (normally MGUT) in
  DRbar)
• (usually with µMSSM0)

NMSSM

• SUSY Breaking Terms (at scale Q in DRbar)

• Physical Spectrum
• 3 H0 (PDG 25,35,45), 2 A0 (PDG 36, 46), 5?0
  (New 1000045)
• Enlarged mixing

See also MicrOmegas CalcHEP Interface to
Pythia basically ready
9
Cross Sections Theory Errors

• Theory Errors
• Introduce (unphysical) input variables
  corresponding to variations within theoretical
  uncertainty -gt range of spectra. (Similar in
  spririt to error PDF's)
• Calculation of observables from spectrum ? /-
  errors on computed variables
• Cross Sections used by fit programs
• Templated in SPheno. Collecting experiences now.

Fittino, Sfitter
10
Outlook

• Conceptual Design Report for SLHA2 to be
  included in Les Houches Proceedings (deadline Dec
  1 05)
• Detailed Writeup to follow in 2006.

11
Conclusions
Tough conditions call for good tools! We will be
ready for NMSSM, CPV, RPV, FLV,
Then all we need is a signal