HiggsCharacterisation: README

File README, 3.6 KB (added by mawatari, 4 years ago)

HC_NLO_X0 UFO model README file

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1# This is the README file for the HC_NLO_X0 UFO
2# Authors: F. Demartin, M. Zaro
3#   email: federico.demartin@uclouvain.be
4# Model version: 1.2
5
6
7___________________
8***  CHANGELOG  ***
9
101.2 (2015.06.02)
11    - Fixed a conflict with MadLoop for loop-induced processes
12    - Included instructions for single top + higgs production
13
141.1 (2014.04.03)
15    - Modified loop_particles attributes to be compliant with the new
16      conventions of UFO@NLO, effective in MG5_aMC starting from v2.1.1.
17      In particular, use PDG code instead of particle name.
18      Changes affect the following files: object_library.py, particles.py.
19      Other minor changes in some files: __init__.py, CT_parameters,
20      paramcard_heft.dat, restrict_heft.dat.
21
221.0 (2014.01.27)
23    - Release
24
25___________________________
26***  IMPORTANT REMARKS  ***
27
28- Use with MG5_aMC 2.1.1 or later
29- Only for single X0 production and decay
30- 4F scheme with 'HC_NLO_X0' and 'HC_NLO_X0-4Fnoyb'
31     p,j = g u c d s u~ c~ d~ s~
32- 5F scheme with 'HC_NLO_X0-no_b_mass' and 'HC_NLO_X0-heft'
33     p,j = g u c d s b u~ c~ d~ s~ b~
34- Find below the correct instructions to generate a process
35
36____________________________________________
37***  INSTRUCTIONS TO GENERATE A PROCESS  ***
38
39[1] GLUON FUSION + 0,1,2 JETS (GF) at NLO-QCD [arXiv:1306.6464, arXiv:1407.5089]
40
41> import model HC_NLO_X0-heft
42> generate p p > x0 (j ...) / t [QCD]
43
44where '/ t' filters out diagrams with top loops, that are already
45accounted for by the X0-gluons effective couplings in the limit Mtop->inf.
46
47
48[2] WEAK VECTOR BOSON FUSION (VBF) at NLO-QCD [arXiv:1311.1829]
49
50> import model HC_NLO_X0(-no_b_mass)   
51> generate p p > x0 j j $$ w+ w- z / a [QCD]
52
53where '$$ w+ w- z' removes diagrams with W/Z in the s-channel, which
54are included in VH production, and '/ a' removes diagrams with photons.
55
56Before you 'launch' the process, exit mg5_aMC, go to the output directory and
571) comment with a hash '#' the line
58  tests.append('check_poles')
59inside the file
60  bin/internal/amcatnlo_run_interface.py
612) set to -1 the parameters
62  'IRPoleCheckThreshold' and 'PrecisionVirtualAtRunTime'
63in the file
64   Cards/FKSparams.dat .
65
66
67[3] VECTOR BOSON ASSOCIATED PRODUCTION (VH) at NLO-QCD [arXiv:1311.1829]
68
69> import model HC_NLO_X0(-no_b_mass) 
70> generate p p > x0 l+ vl [QCD]
71> add process p p > x0 l- vl~ [QCD]
72> add process p p > x0 l+ l- / a [QCD]
73
74where '/ a' removes diagrams with photons.
75
76
77[4] TOP PAIR ASSOCIATED PRODUCTION (ttH) at NLO-QCD [arXiv:1407.5089]
78
79> import model HC_NLO_X0(-no_b_mass) 
80> generate p p > x0 t t~ [QCD]   
81
82
83[5] SINGLE TOP ASSOCIATED PRODUCTION (tH) at NLO-QCD [arXiv:1504.00611]
84
85t-channel, 4-flavour scheme:
86> import model HC_NLO_X0-4Fnoyb
87> generate p p > x0 t b~ j $$ w+ w- [QCD]
88> add process p p > x0 t~ b j $$ w+ w- [QCD]
89
90t-channel, 5-flavour scheme:
91> import model HC_NLO_X0-no_b_mass
92> generate p p > x0 t j $$ w+ w- [QCD]
93> add process p p > x0 t~ j $$ w+ w- [QCD]
94
95s-channel:
96> import model HC_NLO_X0(-no_b_mass)
97> generate p p > w+ > x0 t b~ [QCD]
98> add process p p > w- > x0 t~ b [QCD]
99
100
101__________________________
102***  ACKNOWLEDGEMENTS  ***
103
104This UFO model contains parts of the following models:
105- loop_sm   by V. Hirschi
106- heft   by N. Christensen, C. Duhr;
107- HC (HiggsCharacterisation)   by P. de Aquino, K. Mawatari.
108
109The R2 counterterms for the H-gluons vertices have firstly
110been computed by B. J. Page and R. Pittau [arXiv:1307.6142].
111
112F.D. thanks the following people for their support during the
113implementation and validation of this model:
114C. Degrande, R. Frederix, V. Hirschi, F. Maltoni, O. Mattelaer,
115K. Mawatari, B. J. Page, T. Peraro, R. Pittau, M. Zaro.
116