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Status Report

Status Report. http://home.fnal.gov/~skands/slha. SLHA – Considerations. Consistency Define parameters consistently and unambiguously  specific conventions adopted (described in detail in writeup) Flexible/Extendable

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Status Report

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  1. Status Report http://home.fnal.gov/~skands/slha

  2. SLHA – Considerations • Consistency • Define parameters consistently and unambiguously  specific conventions adopted (described in detail in writeup) • Flexible/Extendable • Structure should be general enough to handle any model  files built of modular data “blocks” • Usable • Easy to implement and use  Keep basic structure simple.

  3. SPECTRUM CALCULATOR SUSY MODEL MC EVENT GEN / XS CALCULATOR input spectrum MSSM SUGRA GMSB AMSB NMSSM RPV CPV FLV … CPSUPERH FEYNHIGGS ISASUSY NMHDECAY SOFTSUSY SPHENO SUSPECT … CALCHEP COMPHEP ILCSLEPTON GRACE HERWIG (++ ) ISAJET PROSPINO PYTHIA SHERPA SMADGRAPH SUSYGEN WHIZARD … spectrum spc+dec spc FEYNHIGGS FCHDECAY HDECAY NMHDECAY SDECAY SPHENO DECAY PACKAGE CDM PACKAGE MICRΩS DARKSUSY NEUTDRIVER PLATON (?) SUSY Les Houches Accord v1                              + F77 I/O Library by T. Hahn (now also SLHA2) FITTERS  FITTINO, SFITTER 

  4. Example SLHA Spectrum

  5. SUSY Breaking Terms(at scale Q in DRbar) How to Generalise? MSSM • Superpotential(at scale Q (normally MGUT) in DRbar) RPV CPV FLV

  6. Flavour Violation • Using Super CKM/MNS basis (at floating scale) • Quark and lepton Yukawas diagonal • 6x6 squark / slepton mixing • Complete conventions for input parameters (VCKM, fermion masses, soft terms, …) + conventions for output spectrum

  7. Flavour Violation • EW SCALE MIXING: • USQMIX: 6x6 up-squark mixing in super-CKM basis • DSQMIX: 6x6 down-squark mixing in super-CKM basis • Problem: SLHA uses the PDG particle enumeration scheme, but need generalisation for MSSM. Which quark is which? Enumeration of mass eigenstates. FCHDECAY fchdecay.googlepages.com Main Issue: PDG (no-mixing limit): Down squarks: PDG code 1000001 d_1 1000003 d_2 1000005 d_3 2000001 d_4 2000003 d_5 2000005 d_6 Up squarks: PDG Code 1000002 u_1 1000004 u_2 1000006 u_3 2000002 u_4 2000004 u_5 2000006 u_6 1000001 d_L 1000003 s_L 1000005 b_1 2000001 d_R 2000003 s_R 2000005 b_2 1000002 u_L 1000004 c_L 1000006 t_1 2000002 u_R 2000004 c_R 2000006 t_2 • NB: PDG are open to suggestions

  8. RPV The bilinear terms and the VEVs are not independent. Related by the condition of EWSB. In SLHA1, one had the possibility either to specify m2H1 and m2H2 or μ and m2A. This carries over to the RPV case, where not all the parameters in the input blocks RPV...IN can be given simultaneously.

  9. NMSSM • Q: One or Many? • Specify field content  one NMSSM (e.g. dimensionality of mixing matrices always same) • Qualitatively different models w/ different superpotentials etc (?)  many NMSSM? (nMSSM, NMSSM, MNMSSM, …) • SLHA2: general NMSSM with all terms allowed by supersymmetry and gauge invariance • Each variant corresponds to some terms (non-)zero. • In general: any term not given explicitly assumed zero

  10. MISCELLANEOUS • Theory uncertainties, cross sections etc, will be left out in the interest of finalizing the agreements soon • This does not prevent / preclude private agreements! • All SUSY parameters will be given in DRbar

  11. Note on General BSM Resonances • Non-SUSY BSM: • Specialised tools beginning to emerge • Important to have full-fledged event generators • Qualitatively different collider phenomenologies • Model confusion • Extensive discussions at MC4BSM(FNAL, March 20-21 2006) • Summary of discussions available on spires (f t mc4bsm) •  PYTHIA and CalcHEP now use SLHA-like block BLOCK QNUMBERS 1234567 # new_guy PDG=1234567 1 0 # 3 times electric charge 2 2 # number of spin states (2S+1) 3 1 # colour rep (1: singlet, 3: triplet, 8: octet) 4 0 # Particle/Antiparticle distinction (0=own anti) BLOCK MASS # Mass Spectrum 1234567 3.1415926535E+02 # new_guy DECAY 1234567 1.000000E+00 # new_guy width 1.0000E-00 2 22 22 # Br(new_guy -> gamma gamma) • Or something a la definition of a particle in CompHEP / Madgraph model file?

  12. Outlook • ‘Conceptual Design Report’ for SLHA2 in 2005 Les Houches BSM Proceedings, hep-ph/0602198by now obsolete • Les Houches 2007 preliminary writeup: • Submit to archives as soon as lepton mixing included (scope: 1 month) • See also Les Houches BSM tools repository:http://www.ippp.dur.ac.uk/montecarlo/BSM http://home.fnal.gov/~skands/slha

  13. Agenda • 14:00 SLHA2 status report (20’) • 14:20 Introduction round and brainstorm • Who is who, tools • Definition of Projects • Improving the BSM interface Madgraph/PYTHIA (Someone from CompHEP, Gigg, Herquet, Hubisz, Pukhov, Skands, Su) • … • 15:15 General Tools Discussion • Experimental Needs, Model files, Feedback, … • More projects? • …

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