Particle Content SUSY
Definition of Superfields
Chiral superfields in SARAH are defined via the array SuperFields
. The general syntax is
SuperField[[/ii]] = {SuperField Name, Generations, Components, Transformation Gauge 1,
Transformation Gauge 2..., Transformation Global 1, Transformation Global 2 };

Superfield Name
: The name for the superfield 
Generations
: The number of generations 
Components
: The basis of the name for the components. Two cases are possible: The field transforms only trivially under the gauge groups with expanded indices. In this case, the entry is one dimensional.
 The field transforms nontrivially under gauge groups with expanded indices. In this case, the entry is a vector or higher dimensional tensor fitting to the dimension of the field. Note, representations larger than the fundamental one are written as tensor products

Transformation Gauge X
: Transformation under the different gauge groups defined before. For U(1) this is the charge, for nonAbelian gauge groups the dimensions is given as integer respectively negative integer. The dimension D of an irreducible representation is not necessarily unique. Therefore, to make sure, SARAH uses the demanded representation, also the corresponding Dynkin labels have to be added. 
Transformation Global X
: Transformation under the different global symmetries. If only one quantum number is given per superfield per global symmetry, this number is used for the superfield itself but also for the scalar and fermionic component. To define a R symmetry, a list with three entries has to be given. For chiral superfields, the first entry is the charge for the superfield, the second for the scalar component, the third for the fermionic component. For vector superfield, the second entries refers to the gaugino, the third to the gauge boson.
Names of component fields
The names of the component fields are derived from the names of the superfield as explained here
NonFundamental representations
More details about the treatment of nonfundamental representations is given here.
Softbreaking masses
SARAH adds automatically for all chiral superfields softbreaking squared masses named
m <> "Name of Superfield" <> 2
Examples

Fields with expanded indices The definition of the left quark superfield in the MSSM is
SuperField[[/11]] = {q, 3, {uL, dL}, 1/6, 2, 3, {1,1,1}};
The consequence of this definition is
 Left upsquarks and quarks are called
SuL
/FuL
 Left downsquarks and quarks are called
SdL
/FdL
 There are three generations
 The superfield is named
q
 The softbreaking mass is named
mq2
 The hypercharge is $\frac{1}{6}$
 The superfield transforms as 2 under S**U(2)
 The superfield transforms as 3 under S**U(3)
 The superfield and scalar have Rparity 1, the fermion +1.
 Left upsquarks and quarks are called

Fields with no expanded indices The right downquark superfield is defined in the MSSM as
SuperField[[/33]] = {d, 3, {conj[dR]}, 1/3, 1, 3, {1,1,1}};
The meaning is
 The right squarks and quarks are called
SdR
andFdR
 There are three generations
 The Superfield name is
d
 The softbreaking mass is named
md2
 The hypercharge is $\frac{1}{3}$
 It does not transform under S**U(2)
 It does transform as ${\bf \bar{3}}$ under S**U(3)
 The superfield and scalar have Rparity 1, the fermion +1.
 The right squarks and quarks are called

Specification of representation
Since the10
under SU(5) is not unique, it is necessary to add the appropriate Dynkin labels, i.e.SuperField[[/11]] = {Ten, 1, t, {10,{0,1,0,0}},...};
or
SuperField[[/11]] = {Ten, 1, t, {10,{0,0,1,0}},...};

Mixed softbreaking terms
In models which contain fields with the same quantum numbers under gauge and global symmetries mixed softbreaking terms are added. For instance, in models with heavy squarksSuperField[[/33]] = {d, 3, {conj[dR]}, 1/3, 1, 3}; ... SuperField[[/1010]] = {DH, 3, {conj[dRH]}, 1/3, 1, 3};
the term of the form
mdDH (conj[SdR] SdRH + SdR conj[SdRH])
is automatically added. For the MSSM without Rparity violation, the terms
mlHd (conj[Sl] SHd + Sl conj[SHd])
are not created, because of the defined, global symmetry.