Recola & Recola2¶
Recola releases¶
Recola 1.4.4 features:
LO and NLO helicity and color amplitudes
LO and NLO amplitudes squared amplitudes, optionally polarized
LO and NLO colour-correlated squared amplitudes for dipole subtraction
LO spin-correlated squared amplitudes for dipole subtraction
Dimreg for UV and IR singularities, optionally mass regularization (collinear)
Possibility for the selection of factorizable corrections in the pole approximation
\(\alpha_0\), \(\alpha_\mathrm{Z}\), \(G_\mathrm{F}\) schemes for the electromagnetic coupling constant \(\alpha\)
Fixed and running \(N_f\) flavour scheme for strong coupling constant \(\alpha_s\)
Complex-mass scheme for unstable particles
Fortran95 and C++ interfaces exemplified with demo files
Recola2 2.2.4 extends these features by:
Additional model files in extended Higgs-sectors
Complementary model files in the Background-Field Method
An intuitive Python interface with a built-in documentation
Memory optimzations for crossing related processes
LO and NLO spin-(colour-) correlated squared amplitudes
Recola-collier package¶
Standalone releases¶
Release history¶
- 7/9/2023
release of recola-1.4.4, recola-collier-1.4.4:
new input method for setting alphaGF: use_gfermi_scheme_and_set_gfermi_rcl, use_gfermi_scheme_complex_and_set_gfermi_rcl
fix of bug in virtual QCD corrections if corresponding LO is not selected
fix of fermion flow
fix rescaling of couplings
other minor fixes
- 19/3/2022
release of recola-1.4.3, recola-collier-1.4.3:
bug fixes concerning polarization selection.
- 11/1/2022
release of recola-1.4.2, recola-collier-1.4.2:
Polarization selection for internal particles , see internal polarization selection
- 3/8/2020
release of recola2-2.2.2, recola2-collier-2.2.2:
Fixed passing invariants to collier in pole approximation
Improved process generation in pole approximation
Fixed gcc10 warnings/errors
Optimization of use of helicity conservation
Updated and new model files
- 19/2/2019
release of recola2-2.2.0, recola2-collier-2.2.0,recola-1.4.0, recola-collier-1.4.0:
Recola1/Recola2:
Spin correlator a la Powheg
Process summary log
Recola2:
Global collier cache mode (see collier interface)
Performance boost for process generation and computation (Recola1 optimizations).
- 28/12/2018
release of recola2-2.1.7, recola2-collier-2.1.7:
Updated interface for extended Higgs sectors
Dynamic scales setting
Complete NLO correlations (spin-colour/colour/spin + loop-induced)
Use of crossing symmetry in process generation
Improved memory management for generated processes
- 16/01/2018
release of recola2-2.1.0, recola2-collier-2.1.0, recola-1.3.0, recola-collier-1.3.0:
1-loop colour correlations
Selection of quark-line topologies (s,t,u channel)
CMake installation (
make install
)Testing suite (
make check
)Fix overflow bug in Recola
Fix segmentation fault in Recola/Recola2
- 19/09/2017
release of recola2-2.0.0 and recola2-collier-2.0.0:
Model independent version of Recola
Python/C++ interface
- 18/04/2017
release of recola-1.2 and recola-collier-1.2:
C++ interface
numerically stable computation of invariants
- 22/12/2016
release of recola-1.1 and recola-collier-1.1:
additional user methods
fix momenta corrections
fix R2 vertex \(\gamma\; \tau^-\; \tau^+\)
- 04/05/2016
release of recola-1.0 and recola-collier-1.0