file src/SpecBit.cpp
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Namespaces
| Name |
|---|
| Gambit TODO: see if we can use this one: |
| Gambit::SpecBit |
Detailed Description
Author:
- Ben Farmer (ben.farmer@gmail.com)
- Tomas Gonzalo (tomas.gonzalo@monash.edu)
Date:
- 2015 Aug
- 2020 Jul
Functions of module SpecBit
SpecBit module functions shared by several models, or otherwise generic.
Authors (add name and date if you modify):
Source code
// GAMBIT: Global and Modular BSM Inference Tool
// *********************************************
/// \file
///
/// Functions of module SpecBit
///
/// SpecBit module functions shared by several
/// models, or otherwise generic.
///
/// *********************************************
///
/// Authors (add name and date if you modify):
///
/// \author Ben Farmer
/// (ben.farmer@gmail.com)
/// \date 2015 Aug
///
/// \author Tomas Gonzalo
/// (tomas.gonzalo@monash.edu)
/// \date 2020 Jul
///
/// *********************************************
#include <string>
#include <sstream>
#include "gambit/Elements/gambit_module_headers.hpp"
#include "gambit/SpecBit/SpecBit_rollcall.hpp"
// QedQcd header from SoftSUSY (via FlexibleSUSY)
#include "flexiblesusy/src/lowe.h"
namespace Gambit
{
namespace SpecBit
{
using namespace LogTags;
// To check if a model is currently being scanned:
// bool Pipes::<fname>::ModelInUse(str model_name)
/// @{ Non-Gambit helper functions
// =======================================================================
// These are not known to Gambit, but they do basically all the real work.
// The Gambit module functions merely wrap the functions here and hook
// them up to their dependencies, and input parameters.
/// Initialise QedQcd object from SMInputs data
void setup_QedQcd(softsusy::QedQcd& oneset /*output*/, const SMInputs& sminputs /*input*/)
{
// Set pole masses (to be treated specially)
oneset.setPoleMt(sminputs.mT);
//oneset.setPoleMb(...);
oneset.setPoleMtau(sminputs.mTau);
oneset.setMbMb(sminputs.mBmB);
/// set running quark masses
oneset.setMass(softsusy::mDown, sminputs.mD);
oneset.setMass(softsusy::mUp, sminputs.mU);
oneset.setMass(softsusy::mStrange, sminputs.mS);
oneset.setMass(softsusy::mCharm, sminputs.mCmC);
/// set QED and QCD structure constants
oneset.setAlpha(softsusy::ALPHA, 1./sminputs.alphainv);
oneset.setAlpha(softsusy::ALPHAS, sminputs.alphaS);
/// NOTE! These assume the input electron and muon pole masses are "close
/// enough" to MSbar masses at MZ. The object does the same with its
/// default values so I guess it is ok.
oneset.setMass(softsusy::mElectron, sminputs.mE);
oneset.setMass(softsusy::mMuon, sminputs.mMu);
oneset.setPoleMZ(sminputs.mZ);
}
/// Check that the spectrum has a neutralino LSP.
bool has_neutralino_LSP(const Spectrum& result)
{
double msqd = result.get(Par::Pole_Mass, 1000001, 0);
double msqu = result.get(Par::Pole_Mass, 1000002, 0);
double msl = result.get(Par::Pole_Mass, 1000011, 0);
double msneu = result.get(Par::Pole_Mass, 1000012, 0);
double mglui = result.get(Par::Pole_Mass, 1000021, 0);
double mchi0 = std::abs(result.get(Par::Pole_Mass, 1000022, 0));
double mchip = std::abs(result.get(Par::Pole_Mass, 1000024, 0));
return mchi0 < mchip &&
mchi0 < mglui &&
mchi0 < msl &&
mchi0 < msneu &&
mchi0 < msqu &&
mchi0 < msqd;
}
/// Helper to work with pointer
bool has_neutralino_LSP(const Spectrum* result)
{
return has_neutralino_LSP(*result);
}
/// @} End module convenience functions
/// @{ Gambit module functions
// =======================================================================
// These are wrapped up in Gambit functor objects according to the
// instructions in the rollcall header
/// Set SMINPUTS (SLHA2) struct to match StandardModel_SLHA2 parameters.
// Effectively just changes these model parameters into a more convenient form.
// But also opens up the possibility of rebuilding this struct from some other
// parameterisation.
void get_SMINPUTS(SMInputs &result)
{
namespace myPipe = Pipes::get_SMINPUTS;
SMInputs sminputs;
// Get values from Params pipe
// (as defined in SLHA2)
if(myPipe::ModelInUse("StandardModel_SLHA2"))
{
sminputs.alphainv = *myPipe::Param["alphainv"];
sminputs.GF = *myPipe::Param["GF" ];
sminputs.alphaS = *myPipe::Param["alphaS" ];
sminputs.mZ = *myPipe::Param["mZ" ];
sminputs.mE = *myPipe::Param["mE" ];
sminputs.mMu = *myPipe::Param["mMu" ];
sminputs.mTau = *myPipe::Param["mTau" ];
sminputs.mNu1 = *myPipe::Param["mNu1" ];
sminputs.mNu2 = *myPipe::Param["mNu2" ];
sminputs.mNu3 = *myPipe::Param["mNu3" ];
sminputs.mD = *myPipe::Param["mD" ];
sminputs.mU = *myPipe::Param["mU" ];
sminputs.mS = *myPipe::Param["mS" ];
sminputs.mCmC = *myPipe::Param["mCmC" ];
sminputs.mBmB = *myPipe::Param["mBmB" ];
sminputs.mT = *myPipe::Param["mT" ];
sminputs.mNu1 = *myPipe::Param["mNu1" ];
sminputs.mNu2 = *myPipe::Param["mNu2" ];
sminputs.mNu3 = *myPipe::Param["mNu3" ];
// CKM
sminputs.CKM.lambda = *myPipe::Param["CKM_lambda" ];
sminputs.CKM.A = *myPipe::Param["CKM_A" ];
sminputs.CKM.rhobar = *myPipe::Param["CKM_rhobar" ];
sminputs.CKM.etabar = *myPipe::Param["CKM_etabar" ];
// PMNS
sminputs.PMNS.theta12 = *myPipe::Param["theta12"];
sminputs.PMNS.theta23 = *myPipe::Param["theta23"];
sminputs.PMNS.theta13 = *myPipe::Param["theta13"];
sminputs.PMNS.delta13 = *myPipe::Param["delta13"];
sminputs.PMNS.alpha1 = *myPipe::Param["alpha1"];
sminputs.PMNS.alpha2 = *myPipe::Param["alpha2"];
// W mass. Stick with the observed value (set in the default constructor) unless instructed otherwise.
if (myPipe::runOptions->getValueOrDef<bool>(false,"enforce_tree_level_MW"))
{
// Calculate MW from alpha, mZ and G_F, assuming the tree-level relation.
const double pionroot2 = pi * pow(2,-0.5);
double cosW2 = 0.5 + pow(0.25 - pionroot2 / (sminputs.alphainv * sminputs.GF * pow(sminputs.mZ,2.0)), 0.5);
sminputs.mW = sminputs.mZ * pow(cosW2,0.5);
}
}
else
{
std::ostringstream errmsg;
errmsg << "Error mapping Standard Model parameters to SMINPUTS capabilities!";
errmsg << "Perhaps you have added a new model to the ALLOWED_MODELS of this ";
errmsg << "module function but have not added a corresponding case in the ";
errmsg << "function source (here)." << std::endl;
SpecBit_error().raise(LOCAL_INFO,errmsg.str());
}
// Return filled struct
result = sminputs;
}
/// @} End Gambit module functions
} // end namespace SpecBit
} // end namespace Gambit
Updated on 2024-07-18 at 13:53:32 +0000