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Higgs precision era at the LHC

Objective

We are at a very special point in space and time. The Large Hadron Collider has experienced a first very successful physics run that culminated with the discovery of the long sought-after Higgs boson. We have begun probing the substructure of nature at unprecedented 10^(-17) cm distances, corresponding to the energy scales of the few TeV. The goal of this project is to develop a formalism to bring the study of the recently discovered Higgs boson into a precision era. With the discovery last year of a new resonance that is identified as the long sought-after Higgs boson with a probability better than 1-10^(-13), a new era started in the understanding of the Standard Model (SM) of particle physics. In the absence of any evidence for any other new degree of freedom at the weak scale, a mass gap is likely to separate the SM particles from the dynamics generating and stabilizing the Higgs potential. Our ignorance about the New Physics sector can thus be conveniently parametrized in terms of a set of higher dimensional operators built out of the SM blocks and obeying the simple SM symmetries laws. The Higgs data collected by the ATLAS and CMS experiments (as well as by the 2 Tevatron experiments) start putting interesting bounds on the 8 unconstrained deformation directions affecting the Higgs physics. Two lines of research will be developed in this project: 1/ the identification of the best variables to characterize the Higgs data in analogy with the oblique parameters that were introduced to study EW data, 2/ the computation of next-to-leading corrections for the Higgs production and decay rates in the presence of higher dimensional operators deforming the SM.

Field of science

  • /natural sciences/physical sciences/theoretical physics/particles/particle accelerator
  • /social sciences/law
  • /natural sciences/physical sciences/theoretical physics/particles
  • /natural sciences/physical sciences/theoretical physics/particles/higgs boson

Call for proposal

FP7-PEOPLE-2013-CIG
See other projects for this call

Funding Scheme

MC-CIG - Support for training and career development of researcher (CIG)

Coordinator

STIFTUNG DEUTSCHES ELEKTRONEN-SYNCHROTRON DESY
Address
Notkestrasse 85
22607 Hamburg
Germany
Activity type
Research Organisations
EU contribution
€ 81 250
Administrative Contact
Joachim Mnich (Prof.)

Participants (1)

INSTITUTO DE FISICA DE ALTAS ENERGIAS

Participation ended

Spain
EU contribution
€ 18 750
Address
Campus De Bellaterra - Universidad Autonoma De Barcelona
08193 Cerdanyola Del Valles
Activity type
Research Organisations
Administrative Contact
Marta Balza (Ms.)