# 11th International Workshop on Boosted Object Phenomenology, Reconstruction and Searches in HEP (BOOST 2019)

Jul 21 – 26, 2019
MIT
US/Eastern timezone

## Search for a generic heavy Higgs at the LHC

Not scheduled
20m
32-123 (MIT)

### 32-123

#### MIT

https://goo.gl/maps/Wx14Gpe2wRy
Poster

### Speaker

Ms Yue Xu (Tsinghua University)

### Description

A generic heavy Higgs has both dim-4 and effective dim-6 interactions with the Standard Model (SM) particles. The former has been the focus of LHC searches in all major Higgs production channels, just as the SM one, but with negative results so far. If the heavy Higgs is connected with Beyond Standard Model (BSM) physics at a few TeV scale, its dim-6 operators will play a very important role - they significantly enhance the Higgs momentum, and reduce the SM background in a special phase space corner to a level such that a heavy Higgs emerges, which is not possible with dim-4 operators only. We focus on the associated VH production channel, where the effect of dim-6 operators is the largest and the SM background is the lowest. Main search regions for this type of signal are identified, and substructure variables of boosted jets are employed to enhance the signal from backgrounds. The parameter space of these operators are scanned over, and expected exclusion regions with 300 fb$^{-1}$ and 3 ab$^{-1}$ LHC data are shown, if no BSM is present. The strategy given in this paper will shed light on a heavy Higgs which may be otherwise hiding in the present and future LHC data.

### Primary authors

Dr Xin Chen (Tsinghua University) Ms Yue Xu (Tsinghua University) Dr Yongcheng Wu (Carleton University) Dr Yu-Ping Kuang (Tsinghua University) Dr Qing Wang (Tsinghua University) Mr Hang Chen (Tsinghua University) Dr Shih-Chieh Hsu (University of Washington) Dr Zhen Hu (Tsinghua University) Mr Congqiao Li (Peking University)

### Presentation materials

There are no materials yet.