Home of FeynHiggs

FeynHiggs is a Fortran code for the diagrammatic calculation of the masses, mixings and much more of the Higgs bosons in the MSSM at the two-loop level.

Quick links: FeynHiggs [literature] [api] [features] [citation guide] [FHUCC] [Grid] [CDM/NUHM benchmarks]

Newest version: FeynHiggs2.7.0

Upgrade information:
To upgrade from FeynHiggs2.6.5 to FeynHiggs2.7.0 or higher you have to adjust FHCouplings, FHHiggsCorr, FHHiggsProd and FHSetNMFV (see "what happened" below).
To upgrade from FeynHiggs2.6.0 to FeynHiggs2.6.1 or higher you have to adjust FHSetPara (see "history" below). You may want to include the new routine FHSetSMPara (if not, defaults are used for SM parameters).

Download of the tar.gz-files:
You can download the complete tar.gz-file, containing all files (~1 MB).

Download the executables directly:
You can download the executables directly (version 2.7.0 and others). They are statically linked.

x86-Linux:
- Command-line interface: FeynHiggs2.7.0 [2.5.1], [2.4.1], [2.3.2], [2.2.10]
- Mathematica version: MFeynHiggs2.7.0 [2.5.1], [2.4.1], [2.3.2], [2.2.10]
IntelMac:
- Command-line interface: FeynHiggs2.7.0
- Mathematica version: MFeynHiggs2.7.0
Alpha Tru64 Unix:
- Command-line interface: FeynHiggs2.7.0
- Mathematica version: MFeynHiggs2.7.0
Windows:
- Command-line interface: FeynHiggs2.6.3
- Mathematica version: MFeynHiggs2.6.3

In case you encounter problems with the executables, try to download the full version and do the compilation yourself.

The usage of the program is explained in detail in the man pages contained in the .tar.gz-file. Have a look at the README.

View the man pages online:
[FeynHiggs] [libFH]
[FHSetFlags] [FHSetSMPara] [FHSetPara] [FHSetNMFV]
[FHRetrieveFlags] [FHRetrieveSMPara] [FHRetrievePara] [FHRetrieveNMFV]
[FHSelectUZ] [FHGetPara] [FHGetSelf] [FHHiggsCorr] [FHCouplings] [FHUncertainties] [FHConstraints] [FHHiggsProd] [MFeynHiggs] [FHSetSLHA] [FHSetDebug]
[FHClearRecord] [FHSetRecord] [FHReadRecord] [FHLoopRecord] [FHRecordIndex] [FHLoadTable] [FHTableRecord]
You may also want to have a look at the api.

User comments:
(concerning installation, compilation etc.)
[PowerMac]

CDM/NUHM benchmark planes (in agreement with Cold Dark Matter measurements) can be found here.
For details how to use the planes see arXiv:0709.0098 [hep-ph].

Last update: Dec. 21. 2009
What happened (FeynHiggs2.7.0):

The full one-loop contributions to Γ(Φ → f₁f₂) have been included. This includes also flavor-violating decays (f₁ ≠ f₂).
Thanks go to Karina Williams for checking and providing results. Thanks go to Dominik Scherer for providing data on Δ_b.
Call to FHCouplings slightly modified. The "excl" option has been superseded by HiggsBounds. The new last argument "fast" specifies whether the off-diagonal Higgs to fermion decays are evaluated.
```
  fast = 0 : all Higgs to fermion decays are evaluated
  fast = 1 : only the diagonal Higgs to fermion decays are evaluated.      
```
The LHC Higgs production cross sections (FHHiggsProcs) is now envoked with the collider energy as an argument. Some production cross sections are now available for various center of mass energies.
The SM bb-Higgs production is taken from hep-ph/0304035 by R. Harlander and B. Killgore using the respective code bbh@nnlo.
More details can be found in the man page of [FHHiggsProd].

Phase interpolation in the two-loop contributions improved.
Now the flag tlCplxApprox can take the values from 0 to 6:

  #9 = tlCplxApprox, complex parameters in the 2-loop corrections
    0: all corrections evaluated in the rMSSM                 
    1: a_s a_t in cMSSM only                                  
    2: a_s a_t in cMSSM, rest in rMSSM                        
    3: a_s a_t in cMSSM, rest interpolated in At,Ab,M_3,MUE (default)
    4: a_s a_t in cMSSM, rest interpolated in At,Xb,M_3,MUE   
    5: a_s a_t in cMSSM, rest interpolated in Xt,Ab,M_3,MUE   
    6: a_s a_t in cMSSM, rest interpolated in Xt,Xb,M_3,MUE

If phase interpolation is wanted, the user has to specify what his input variables are. The interpolation is then performed in exactly these variables.

the flag runningMT now only has two options:

  #7 = runningMT: determines which top mass shall be used in the corrections:
    0: MTpole directly and in the stop masses
    1: MTrun directly and in the stop masses

More information can be found in the change-log from Dec. 20. 2008.

Calculation of uncertainties related to Δ_b improved. Now the uncertainties are evaluated as the difference in the Higgs masses for Δ_b in the denominator (resummed) and in the numerator (not resummed).
External Z-factor for charged Higgs included to ensure the on-shell properties for an external charged Higgs.

Call to set the NMFV parameters has changed:

        subroutine FHSetNMFV(error,
     &    deltaLL12_, deltaLL23_, deltaLL13_,
     &    deltaLRuc_, deltaLRct_, deltaLRut_,
     &    deltaRLuc_, deltaRLct_, deltaRLut_,
     &    deltaRRuc_, deltaRRct_, deltaRRut_,
     &    deltaLRds_, deltaLRsb_, deltaLRdb_,
     &    deltaRLds_, deltaRLsb_, deltaRLdb_,
     &    deltaRRds_, deltaRRsb_, deltaRRdb_)

It is now taken into account automatically that the LL entries have to be equal for top- and bottom-type squarks (modulo CKM rotation that is also taken into account).

Bug in the calculation of M_H+ in the NMFV case fixed.
Calculation of ΔM_s inclucded (also for NMFV, added in collaboration with J. Illana).
Γ(H⁺ → tb) has been fixed for M_H⁺ < M_W + 2 m_b. Now it is (correctly) set to zero. Thanks go to Pietro Slavich.
Error in the NMFV input parameters corrected. Before no NMFV parameters were recognized. This problem appeared only in FH265.
FeynHiggs can read input from stdin, use "-" as file name.

For the full history of FeynHiggs, go here.

In case of problems email to Sven Heinemeyer or Thomas Hahn.

The FeynHiggs team:
[Sven Heinemeyer] [Thomas Hahn] [Heidi Rzehak] [Georg Weiglein] [Wolfgang Hollik]

back to the FeynHiggs overview page