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Himalaya 2.0.1

Changes

  • The estimate of the non-logarithmic contributions to the quartic Higgs coupling λ due to the hierarchy expansion has been changed: Xt^5 and Xt^6 terms are no longer taken into account in the uncertainty estimate, because they do not appear at 3-loop O(αt*αs^2). Only the Xt^4 term is used in the uncertainty estimate, if it is absent from the selected hierarchy. As a result, the uncertainty estimate is now symmetric in Xt.

Himalaya 2.0.0

New features

  • The 3-loop O(αt*αs^2) contribution to the CP-even Higgs mass matrix in the MSSM is now calulated in the DR'-bar scheme by default. Shifts to the MDR'-bar and H3m schemes are provided separately.

  • The 3-loop O(αt*αs^2) contribution to quartic Higgs coupling λ of the Standard Model is calculated in the DR'-bar scheme. A shift to the MS-bar scheme is provided separately.

  • A Mathematica interface for Himalaya has been added. See README.md for a usage example.

Changes

  • The default renormalization scheme for the input parameters has been changed to DR'-bar.

  • The names of the following member functions of the HierarchyObject class have been changed:

    • getExpUncertainty() -> getDMhExpUncertainty()
    • getDRToMDRShift() -> getDMhDRbarPrimeToMDRbarPrimeShift()

Himalaya 1.0.1

Improved debug output.

Himalaya 1.0

This is the initial release of the Himalaya library. The Himalaya library calculates the 3-loop O(at*as^2) contribution to the CP-even Higgs mass matrix in the MSSM in the DR-bar or MDR-bar scheme, given a set of MSSM DR-bar input parameters.