rpvsusy Namespace Reference

Classes
class	constants
class	RPVSUSY
class	RPVSUSYbranchings

Functions
def	PDGname (particle)
int	PDGcode (str particle)
def	mass (particle)
def	width (particle)
def	lifetime (particle)

Variables
ROOT	pdg = ROOT.TDatabasePDG.Instance()
constants	c = constants()

Detailed Description

# ==================================================================
#   Python module
#
#   This module provides methods to compute the lifetime and
#   branching ratio of SUSY RPV neutralino given its mass and couplings as
#   input parameters.
#
#   Created: 30/04/2016 Konstantinos A. Petridis (konstantinos.petridis@cern.ch)
#
#   Sample usage:
#     ipython -i rpvsusy.py
#     In [1]: b = RPVSYSY(1.,[1, 1],1e3,1,True)
#     HNLbranchings instance initialized with couplings:
#          \lambda_{production}       = 1GeV
#          \lambda_{decay}            = 1GeV
#          universal sfermion mass    = 1e3GeV
#
#     benchmark scenario:
#          1 (values between 1 and 5)
#     and mass:
#          m = 1.0 GeV
#     In [2]: b.computeNLifetime()
#     Out[2]: 0.0219634078804
#     In [3]: b.findBranchingRatio('N -> K+ mu-')
#     Out[3]: 0.11826749348890987
#
# ==================================================================

Function Documentation

lifetime()

def rpvsusy.lifetime

(

particle

)

Read particle lifetime from PDG database

Definition at line 103 of file rpvsusy.py.

def lifetime(particle):
    """
    Read particle lifetime from PDG database
    """
    particle = PDGname(particle)
    tPart = pdg.GetParticle(particle)
    if particle == "D0" or particle == "D0bar":
        return 4.1e-13
    elif particle == "D+" or particle == "D-":
        return 1.0e-12
    elif particle == "D_s+" or particle == "D_s-":
        return 5.0e-13
    elif particle == "B0" or particle == "B0bar":
        return 1.5e-12
    elif particle == "B+" or particle == "B-":
        return 1.6e-12
 
    return tPart.Lifetime()
 
 

mass()

def rpvsusy.mass

(

particle

)

Read particle mass from PDG database

Definition at line 85 of file rpvsusy.py.

def mass(particle):
    """
    Read particle mass from PDG database
    """
    particle = PDGname(particle)
    tPart = pdg.GetParticle(particle)
    return tPart.Mass()
 
 

PDGcode()

int rpvsusy.PDGcode

(

str

particle

)

Read particle ID from PDG database

Definition at line 76 of file rpvsusy.py.

def PDGcode(particle: str) -> int:
    """
    Read particle ID from PDG database
    """
    particle = PDGname(particle)
    tPart = pdg.GetParticle(particle)
    return int(tPart.PdgCode())
 
 

PDGname()

def rpvsusy.PDGname

(

particle

)

Trim particle name for use with the PDG database

Definition at line 44 of file rpvsusy.py.

def PDGname(particle):
    """
    Trim particle name for use with the PDG database
    """
    if "down" in particle:
        return "d"
    if "up" in particle:
        return "u"
    if "strange" in particle:
        return "s"
    if "charm" in particle:
        return "c"
    if "bottom" in particle:
        return "b"
    if "beauty" in particle:
        return "b"
    if "top" in particle:
        return "t"
    if "1" in particle:
        particle = particle.replace("1", "'")
    if not (
        ("-" in particle)
        or ("+" in particle)
        or ("0" in particle)
        or ("nu_" in particle)
        or ("eta" in particle)
        or ("phi" in particle)
    ) and (particle not in ["d", "u", "s", "c", "b", "t"]):
        particle += "+"
    return particle
 
 

width()

def rpvsusy.width

(

particle

)

Read particle width from PDG database

Definition at line 94 of file rpvsusy.py.

def width(particle):
    """
    Read particle width from PDG database
    """
    particle = PDGname(particle)
    tPart = pdg.GetParticle(particle)
    return tPart.Width()
 
 

Variable Documentation

c

constants rpvsusy.c = constants()

Definition at line 175 of file rpvsusy.py.

pdg

ROOT rpvsusy.pdg = ROOT.TDatabasePDG.Instance()

Definition at line 41 of file rpvsusy.py.