h1jet is hosted by Hepforge, IPPP Durham

H1jet Online

This is an online interface for H1jet, which allows you to run H1jet in your browser to quickly compute the total cross-section and differential transverse momentum distribution of a colour singlet.

See the manual or hover/click the tooltips ⓘ for more information on each parameter.

General Settings:

H1jet comes with three processes out of the box:
Higgs production from gluons and light quarks,
Higgs production from bottom quark annihilation,
and Z production.
Custom processes can be considered in the downloadable version of H1jet with the provided user-interface.

Specify the collider type:
pp = proton-proton,
ppbar = proton-antiproton.

Set the hadronic centre-of-mass collision energy in GeV.

Set the formula for the dynamic evaluation of the factorisation and renormalisation scales. Note that M refers to the mass of the colour singlet.

This is an additional factor multiplied to the dynamic scale choice.

This is an additional factor multiplied to the dynamic scale choice.

Choose one of the built-in PDF sets from LHAPDF. Additional PDF sets can be added on request. Alternatively, the downloadable version of H1jet can use any specified PDF set from LHAPDF.

Histogram Settings:

Physics Parameters:

These parameters are process-dependent. Note that H1jet uses the Gmu scheme, so that the VEV is given by the Fermi coupling constant and the Weinberg angle by mW and mZ.

Additional Model Parameters:

H1jet comes with several built-in BSM models which allows for additional stop squarks or top partners running in the loops
when considering Higgs production.

No additional parameters necessary for the Standard Model.

Simplified SUSY model with two stops in the loops as considered in arXiv:hep-ph/0207010 and arXiv:1806.05598.

Simplified composite Higgs model (where the confinement scale is set to infinity) with a top-partner in the quark loops.

Explicit composite Higgs model (with finite confinement scale) with a top-partner in the quark loops as considered in arXiv:1905.12747.

This interface allows you to specify multiple top-partners running in the loops in the table below. Note that you have to specify the SM top and bottom quarks as well if you wish to include them (they are already added to the table by default).

Mass [GeV] CP-even Yukawa factor CP-odd Yukawa factor Loop approximation