micrOMEGAs 7

Description

Series information

v.7.1

• We have extended the calculation of the relic density in cosmological scenarios where the Hubble parameter receives additional contributions or when entropy is injected through late decays of heavy fields.
• The relic density can be calculated for GeV scale DM that annihilates into mesons in the case of a scalar mediator.
• Possibility to update the tables for geff and Jeff to include new degrees of freedom
• We have fixed a bug in the micrOMEGAs-SModels interface which occurred when a model had a particle with a pdg code=25 with different properties  than the SM Higgs. Now, if the branching ratios of a particle with pdg code 25 does not match the LHC measurements within a 15% uncertainty, such particle  is reassigned the pdg code 25252525.
• We have fixed a bug in the micrOMEGAs-NMSSMTools interface.
• We have fixed a bug in recasting of DarkSide experiment.
• The improveCrossSection routine now works for freeze-in calculations as well.
• The darkOmegaExt routine has additional  2 arguments to include  2DM->3DM processes and  2DM->4DM. New routines darkOmegaExtTR for freeze-in scenario and  darkOmegaExtInfl for late decays of the inflaton are also added.  The vSigmaCC routine which prepares functional arguments for  darkOmegaExt is updated correspondingly.
• We have included  a new routine for the loop-induced partial decay  width of a scalar into gluon pairs, h->GG.  This function hGGqcd(Mh,h) can be applied to a light scalar. 
• We have updated the direct detection routines to include  DM-photon interaction (Coulomb, dipole, quadrupole), in the previous versions only  Coulomb-like interactions ( millicharged) where taken into account. The corresponding photon-DM vertex has to be included in the model Lagrangian by the user.
• For indirect detection, we have updated our annihilation spectra using Pythia-8 and have extended the tables to sqrt(s)=1GeV.  

v.6.3.0

• The routines  darkOmega, darkOmegaTR, darkOmegaInfl can calculate  the relic density independently of the model for a given cross-section. For this, define constSigmaVpbc which is the address of a variable which contains < vσ >[pbc]. By default this parameter is NULL and the cross-section will be computed from the model file.
• For  scenarios with an  inflaton  we have defined a new function aT(T), which returns the scale parameter 'a' at temperature T, such that Ta(aT(T))=T.  In general this equation has two solutions. We choose the one which  corresponds to  a>aT(Tmax).
• The improveCrossSection routine has a new temperature argument
  to have the possibility to implement temperature corrections to matrix elements.
• A new code mdlIndep/nuS.c,   based on arXiv:1507.06655, calculates the relic density of  the right-handed neutrino, assuming that the right-handed neutrino is mixed with an angle theta   with one of the active SM flavor neutrinos. Additional information in section 14 of the manual.

• We have added  an  option to use CalCHEP Monte Carlo integration in micrOMEGAs sessions.

• The new version of CosmiXs ( arXiv:2501.13281) is included.

• We increase the carrier of delta-like functions which present the spectra of single photon, neutrino and electron in order to have a more stable manipulation of spectra (with  boost, sum).

• The new function PlanckCMB which  tests the limit on DM annihilation caused by reionization of hydrogen from energy injection in the CMB is based on arXiv:1506.03811.

• Sample calls to DwarfSignal and PlanckCMB limits  are included in the INDIRECT_DETECTION section of main.c. The  "#define Dwarf" needs to be activated.

• A recasting of  LZ (arXiv:2410.17036) is included

• SModelS version 3.1.0  is now used and the interface is upgraded. The cross sections for p, p-> single BSM particle are calculated by micrOMEGAs.  A new parameter  char* ExcludeBSM contains a list of BSM particles that should  be ignored when calculating LHC cross-sections.

• The code ZpLimCMS  reproduces CMS  95% exclusion of Z' models based on di-lepton production, arXiv:2103.02708 .

• The manual has been  updated and includes a description of all programming  tools used in  micrOMEGAs.

v.6.2.4

• For  downloading an external code  https is now used as  http  sometimes  lead  to problems.
• For all models we add ./calchep_batch   in  the /work directory.  This gives the  user  the possibility to  organise batch calculations for  models included in micrOMEGAs.
• darkOmegaTR  has been  improved to solve the stiff  problem  which occurred  when solving differential equations at large temperature.  Namely we substitute  Y(T)=Yeq(T)+dY(T), where dY(T) is obtained via solution of linearized equation.

v.6.2.3

• Routines for calculation of the relic density  in slow inflaton decay scenario are added.
•  Annihilation spectra for pi-mesons are included and compared with Hazma - arXiv:1907.11846. Annihilation spectra for  Kaons are included as well.
• Annihilation spectra for light mesons and muons are calculated after the code applies a boost to the spectra at rest,  the contribution of FSR photons are then added
• The tables for indirect detection based on Pythia-6 are extended to Mcdm=0.6GeV for all SM final states.
• NMSSMTools_6.1 is used for the NMSSM
• A bug with sorting of Higgs masses in the NMSSM is fixed. Now Mh1<=Mh2<=Mh3 while in  previous versions the masses were sorted according to the PDG numbers.
• PPPC, CosmiXs, Pythia8 indirect detection spectra and their QCD uncertainties (for Pythia8) are not included in the distribution and are downloaded in runtime. 
• LZ_2024(M) returns the 90% exclusion of the LZ experiment, arXiv:2410.17036.
• X11 font  for CalcHEP sessions and displayPlot routines can be changed by Ctrl+/- , Ctrl<> and stored in CalcHEP_src/calchep.ini file.
• LanHEP version 4.0.3 is included  in micrOMEGAs 

v.6.1.15

  - The C-code is improved to avoid warnings of C-compiler.
  - Improved link to LHAPDF.
  - Default set of parton distributions  is  cteq66.
  - A memory leak  in calls to vSigmaA and vSigmaS  is fixed. 
  - QCD uncertainties  of hadronization spectra for indirect detection are included:  arXiv: 2202.11546.
  -  1->4 decays are not computed if there are open 1->3 channels which all give zero contribution to the particle width.
  - New  positron  spectra from production of pions and kaons in light DM scenarios are implemented.
  -   A C-version of suspect for the MSSM is compiled if there is no Fortran compiler
  - New interface to SModelS_3.0.0, the combination of signal regions or analyses can be specified in main.c

 v.6.0.5

• Remove another compilation problem on MAC,  thanks to Maria Gonçalves.
• Update manual

v.6.0.4

- A compiler flag for clang is added to avoid compilation problems on MAC

v.6.0.3 : 

- In the calculation of the cross-section for DM DM-> W,W*, the lower limit on the center-of-mass momentum  is now set to Pcm = 1e-4*(2Mcdm) to avoid losing  precision at Pcm=0 when the s-wave contribution vanishes.

v.6.0.2 : 

- Update manual

v6.0.1 : 

• Fixed a bug that slowed down the computation.

v6.0.0: Published January 5, 2024