# namespace Gambit::DecayBit::MSSM_H #

[No description available]

## Functions #

Name
doublelambda(double x, double y, double z)
doublegamma_h_chi_gL(std::array< double, 2 > m, double gL, double mh =125., double mw =80.385, double GF =1.1663787e-5)
doublegamma_h_chi_0(int i, int j, std::array< double, 4 > m, std::array< std::array< double, 4 >, 4 > Z, double alpha, double mh =125., double mw =80.385, double GF =1.1663787e-5, double sw2 =0.22)
doublegamma_h_chi_pm(int i, int j, std::array< double, 2 > m, std::array< std::array< double, 2 >, 2 > U, std::array< std::array< double, 2 >, 2 > V, double alpha, double mh =125., double mw =80.385, double GF =1.1663787e-5)
doublegamma_h_chi(std::array< double, 2 > m_pm, std::array< double, 4 > m_0, std::array< std::array< double, 2 >, 2 > U, std::array< std::array< double, 2 >, 2 > V, std::array< std::array< double, 4 >, 4 > Z, double alpha, double mh =125., double mw =80.385, double GF =1.1663787e-5, double sw2 =0.22)

## Functions Documentation #

### function lambda #

double lambda(
double x,
double y,
double z
)


Phase-space function (similar to Kallen function)

[ \lambda(x, y; z) = (1 - x / z - y / z)^2 - 4 x y / z^2 ]

### function gamma_h_chi_gL #

double gamma_h_chi_gL(
std::array< double, 2 > m,
double gL,
double mh =125.,
double mw =80.385,
double GF =1.1663787e-5
)


Eq. 2.56 for charginos or neutralinos (\Gamma(h \to \chi_i \chi_j)) in GeV

mMasses of final state particles

gLCoupling (g_L) in Eq. 1.112

mhLightest Higgs mass, (m_h)

mwW-boson mass, (M_W)

GFFermi constant, (G_F)

### function gamma_h_chi_0 #

double gamma_h_chi_0(
int i,
int j,
std::array< double, 4 > m,
std::array< std::array< double, 4 >, 4 > Z,
double alpha,
double mh =125.,
double mw =80.385,
double GF =1.1663787e-5,
double sw2 =0.22
)


Lightest Higgs boson decay to neutralinos at tree-level in GeV

Arguments (i) and (j) are zero-based

Tree-level formula

(\Gamma(h \to \chi_i \chi_j)) in GeV

iNeutralino (\chi_i) in final state

jNeutralino (\chi_j) in final state

mNeutralino mases with phases

ZReal neutralino mixing matrix

alpha(\alpha), Higgs mixing angle

mhLightest Higgs mass, (m_h)

mwW-boson mass, (M_W)

GFFermi constant, (G_F)

sw2Weinberg angle, (\sin^2\theta_W)

### function gamma_h_chi_pm #

double gamma_h_chi_pm(
int i,
int j,
std::array< double, 2 > m,
std::array< std::array< double, 2 >, 2 > U,
std::array< std::array< double, 2 >, 2 > V,
double alpha,
double mh =125.,
double mw =80.385,
double GF =1.1663787e-5
)


Lightest Higgs boson decay to charginos at tree-level in GeV

Arguments (i) and (j) are zero-based

Tree-level formula

(\Gamma(h \to \chi^-_i \chi^+_j)) in GeV

iNegative chargino (\chi^-_i) in final state

jPositive chargino (\chi^+_j) in final state

mChargino masses

UReal chargino mixing matrix

VReal chargino mixing matrix

alpha(\alpha), Higgs mixing angle

mhLightest Higgs mass, (m_h)

mwW-boson mass, (M_W)

GFFermi constant, (G_F)

### function gamma_h_chi #

double gamma_h_chi(
std::array< double, 2 > m_pm,
std::array< double, 4 > m_0,
std::array< std::array< double, 2 >, 2 > U,
std::array< std::array< double, 2 >, 2 > V,
std::array< std::array< double, 4 >, 4 > Z,
double alpha,
double mh =125.,
double mw =80.385,
double GF =1.1663787e-5,
double sw2 =0.22
)


Lightest Higgs boson decay to neutralinos and charginos at tree-level in GeV

Tree-level formula

(\Gamma(h \to \chi\chi)) in GeV

m_pmChargino masses

m_0Neutralino mases with phases

UReal chargino mixing matrix

VReal chargino mixing matrix

ZReal neutralino mixing matrix

alpha(\alpha), Higgs mixing angle

mhLightest Higgs mass, (m_h)

mwW-boson mass, (M_W)

GFFermi constant, (G_F)

sw2Weinberg angle, (\sin^2\theta_W)

Updated on 2023-06-26 at 21:36:52 +0000