Junping Tian

Measurement of Higgs couplings and self-coupling at the ILC

In the Standard Model (SM) the couplings of the Higgs boson to SM particles and itself (selfcouplings) are uniquely specified once the masses of the particles in question as well as the Higgs boson mass are given. Precision measurements of these couplings in the future collider experiments are the key to either verifying the mechanism of the electroweak symmetry breaking in the SM or uncovering physics beyond the SM. This article gives an overview of how various Higgs couplings will be measured at the ILC. Emphasis is put on the ILC’s capability of performing fully model independent determination of absolute HZZ and HWW couplings, the Higgs total width, and hence various other Higgs couplings, which cover essentially all the crucial ones including the top-Yukawa coupling Htt and the trilinear Higgs self-coupling lHHH . The strategy to get the best precision measurements at the ILC is through staged running, which provides many independent s Br measurements for different production channels and at different energies. A method of global fitting is discussed to utilize all of the available information and to derive combined precisions.

Measurement of the Higgs boson mass and e+e-→ZH cross section using Z→μ+μ- and Z→e+e- at the ILC

This paper presents a full simulation study of the measurement of the production cross section (

Spatial resolutions of GEM TPC. A novel theoretical formula and its comparison to latest beam test data

{\ensuremath{\sigma}}_{ZH}

Blocking positive ion backflow using a GEM gate: experiment and simulations

) of the Higgsstrahlung process

Sensitivity to anomalous

{e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}ZH

ZZH

and the Higgs boson mass (

couplings at the ILC

{M}_{\mathrm{H}}

A novel technique for the measurement of the avalanche fluctuation of gaseous detectors

) at the International Linear Collider (ILC), using events in which a Higgs boson recoils against a

Implications of the 750 GeV γγ Resonance as a Case Study for the International Linear Collider

Z

Improved formalism for precision Higgs coupling fits

boson decaying into a pair of muons or electrons. The analysis is carried out for three center-of-mass energies