H-COUP toward version 2 1. Introduction: top-down vs. bottom-up - PowerPoint PPT Presentation

H-COUP — toward version 2 — 1. Introduction: 
 top-down vs. bottom-up Kentarou Mawatari 2. H-COUP in a nutshell 3. H-COUP 3-min tutorial 4. H-COUP toward v.2 5. Summary and outlook 21st NHWG - Osaka - 2017.12.23 1 /12 Kentarou Mawatari (Osaka U.)

The SM cannot be the ultimate theory ! CONF-2015-081 (diphoton) PAS EXO-16-052 (mono-higgs) How can we find BSM physics? ✓ Find new particles/ phenomena. ➡ Top-down approach: 
 SUSY, ExtraD, 2HDM, ... ✓ Find small deviations from Kanemura et al. [1705.05399, PRD] the SM expectation. Butter et al. [1604.03105, JHEP] ➡ Top-down approach: 
 SUSY, ExtraD, 2HDM, ... ➡ Bottom-up approach: Effective field theory (EFT) 21st NHWG - Osaka - 2017.12.23 2 /12 Kentarou Mawatari (Osaka U.)

from SM h Top-down approach Bottom-up approach UV model : SUSY, ExtraDim, extended Higgs, … EFT : SM gauge group, particles deviation H h Top-down vs. Bottom-up predict {L ; m 1 , m 2 , · · · , g 1 , g 2 , · · · } L = L SM + 1 X c i O D6 {L ; Λ , c 1 , c 2 , · · · } find + · · · i Λ 2 i 21st NHWG - Osaka - 2017.12.23 3 /12 Kentarou Mawatari (Osaka U.)

Higgs Characterisation (HC) based on the effective field theory (EFT) • HC provides an automated NLO(QCD)+PS accurate tool and predictions to accomplish the most general and accurate characterisation of Higgs interactions in the main production and decay modes at the LHC. • The model file is publicly available at the FeynRules repository: 
 https://feynrules.irmp.ucl.ac.be/wiki/HiggsCharacterisation 
 ‣ HC1 (spin-0,1,2): “A framework for Higgs characterisation” [1306.6464, JHEP] 
 Artoisenet, de Aquino, Demartin, Frederix, Frixione, Maltoni, Mandal, Mathews, Mawatari, Ravindran, Seth, 
 Torrielli, Zaro ‣ HC2 (VBF/VH): “Higgs characterisation via VBF/VH: NLO and parton-shower effects” [1311.1829, EPJC] 
 Maltoni, Mawatari, Zaro ‣ HC3 (GF(H+jets)/ttH): “Higgs characterisation at NLO: CP properties of the top Yukawa” [1407.5089, EPJC] 
 Demartin, Maltoni, Mawatari, Page, Zaro ‣ HC4 (tH): “Higgs production in association with a single top quark at the LHC” [1504.00611, EPJC] 
 Demartin, Maltoni, Mawatari, Zaro ‣ HC5 (tWH): “tWH associated production at the LHC” [1607.05862, EPJC] 
 Demartin, Maier, Maltoni, Mawatari, Zaro 20th NHWG - Osaka - 2017.08.18 4 /20 Kentarou Mawatari (Osaka U.)

from SM h Top-down approach Bottom-up approach UV model : SUSY, ExtraDim, extended Higgs, … EFT : SM gauge group, particles deviation H h Extending the SM Lagrangian predict {L ; m 1 , m 2 , · · · , g 1 , g 2 , · · · } L = L SM + 1 X c i O D6 {L ; Λ , c 1 , c 2 , · · · } find + · · · i Λ 2 i 21st NHWG - Osaka - 2017.12.23 5 /12 Kentarou Mawatari (Osaka U.)

21st NHWG - Osaka - 2017.12.23 6 /12 Kentarou Mawatari (Osaka U.)

Kanemura, Kikuchi, Yagyu [1511.06211, NPB] Kanemura, Kikuchi, Yagyu [1502.07716, NPB] Singlet extension 2HDM 21st NHWG - Osaka - 2017.12.23 7 /12 Kentarou Mawatari (Osaka U.)

Kanemura, Kikuchi, Yagyu [1511.06211, NPB] Singlet extension 21st NHWG - Osaka - 2017.12.23 8 /12 Kentarou Mawatari (Osaka U.)

H-COUP 3-min tutorial • go to the H-COUP webpage • download the H-COUP file (and the manual [arXiv:1710.04603]) • (install LoopTools.) • unzip the file. • edit Makefile. • make/run. 21st NHWG - Osaka - 2017.12.23 9 /12 Kentarou Mawatari (Osaka U.)

[1312.5571] 21st NHWG - Osaka - 2017.12.23 10 /12 Kentarou Mawatari (Osaka U.)

Higgs decay widths with H-COUP (v.2) +QCD corrections if f=b,c 21st NHWG - Osaka - 2017.12.23 11 /12 Kentarou Mawatari (Osaka U.)

H-COUP: past, present and future • H-COUP v.1 was released last October. - numerically calculates the renormalized Higgs couplings at one loops in various extended Higgs models (singlet extension, 2HDM, inert doublet, …). • By using and extending H-COUP v.1, we are calculating Higgs decay widths (v.2). • By interfacing H-COUP to event generators, we could explore the Higgs sector in productions at the LHC as well as ILC, etc (v.3?). 21st NHWG - Osaka - 2017.12.23 12 /12 Kentarou Mawatari (Osaka U.)