21-26 July 2014
Renold Building
Europe/London timezone
Higgs Phenomenology
Place
Location: Renold Building
Room: E7
Date:
from 21 Jul 14:30 to 25 Jul 18:35
Conveners
-
21 Jul 14:30 - 15:50
- Prof. Grzadkowski, Bohdan (University of Warsaw)
-
21 Jul 16:30 - 18:20
- Dr. Lee, Jae Sik (Chonnam National University)
-
22 Jul 14:30 - 15:50
- Gunion, John (U.C. Davis)
-
22 Jul 16:30 - 18:35
- Prof. Muehlleitner, Milada Margarete (Karlsruhe Institute for Technology)
-
24 Jul 14:30 - 15:50
- Prof. Haber, Howard (University of California, Santa Cruz)
-
25 Jul 14:30 - 15:50
- Prof. Harlander, Robert (Bergische Universitaet Wuppertal)
-
25 Jul 16:30 - 18:35
- Prof. Grzadkowski, Bohdan (University of Warsaw)
Timetable | Contribution List
Displaying 33
contributions
out of
33
We examine an extension of the Two-Higgs Doublet Model with a real gauge-singlet scalar Dark Matter candidate. This is the minimal Standard Model extension that allows for both Dark Matter and additional CP violation in the scalar sector. We have studied constraints on this model from the most recent LHC data together with Planck and direct Dark Matter searches (XENON/LUX/CRESST/CDMS). Invisible d
... More
Presented by Mrs. Aleksandra DROZD
on
22/07/2014
at
16:55
The ATLAS experiment at the LHC has achieved the precision level for the
measurement of the Standard Model processes and has observed the Higgs boson in different production and decay channels. This is an excellent basis to probe the data for possible extensions of the Higgs sector of the Standard Model. In this talk, an overview of the recent searches for Higgs bosons beyond the Standard Model b
... More
Presented by Dr. Martin ZUR NEDDEN
on
25/07/2014
at
13:50
In July 2012 the discovery of a new particle has been announced. While
it is clear that the particle is a Higgs boson it is not clear if it is
the Standard Model Higgs boson. Measurements of the new particle have
been performed and are ongoing to extract the properties of the boson.
Finding additional Higgs bosons would exclude the Standard Model in its
current shape. Many theories beyond the
... More
Presented by Mr. Felix FRENSCH
on
25/07/2014
at
13:30
We consider the two-Higgs-doublet model as a framework in which to evaluate the viability of scenarios in which the sign of the Hbb coupling is opposite to that of the Standard Model (SM), while at the same time all other tree-level couplings are close to their SM values. Whereas such a scenario is consistent with current LHC observations, both future running at the LHC and the ILC could determin
... More
Presented by Howard HABER
on
22/07/2014
at
16:55
We analyze the bounds on the CP-odd Higgs boson coming from precision measurements of the properties of the recently discovered Higgs boson. We discussed the dependence on these bounds on the soft supersymmetry breaking parameters and compared these bounds with the ones obtained from direct searches for non-standard Higgs bosons. We show that there is an interesting complementarity between the bo
... More
Presented by Prof. Carlos WAGNER
on
21/07/2014
at
15:55
We present the full anatomy of various D-term extensions of the MSSM's Higgs sector, which lift the Higgs mass at tree level and for a range of tan beta. We then explore the LHC & ILC's capability to determine their effect through their enhancement of Higgs branching ratios with respect to the Standard Model.
A given D-term enhancement of the Higgs sector allows one to further set a lower boun
... More
Presented by Dr. Moritz MCGARRIE
on
21/07/2014
at
16:35
I will present the computation of the next-to-leading order (NLO) QCD corrections to electroweak Higgs plus three jet production (EW H+3jets) within the Matchbox NLO framework of the Herwig++ event generator. Both vector boson fusion (VBF) and Higgs-strahlung type contributions are included along with all interferences. I will discuss features of our Matchbox implementation and show the impact o
... More
Presented by Dr. Terrance FIGY
on
25/07/2014
at
16:54
We argue that the current experimental data in conjunction with perturbative unitarity considerations exclude the possibility that the LHC 125-126 GeV resonance is a generic massive spin-2 particle of either parity. We demonstrate that perturbative unitarity breaks down at energies Λ~600 GeV in tree-level Z-spin-2 elastic scattering. We further show that W-,Z-spin-2 interactions contribute to the
... More
Presented by Mr. Jason YUE
on
25/07/2014
at
16:35
We present new results for a fit of the pMSSM to all available Higgs data (mass measurement, production and decay rates etc.)
Presented by Sven HEINEMEYER
We study future prospects of the stau which contributes to the Higgs coupling to di-photon. The coupling is sensitive to new physics and planned to be measured at percent levels in future colliders. We show that, if the excess of the coupling is measured to be larger than 4 %, the lightest stau is predicted to be lighter than about 200 GeV by taking vacuum meta-stability conditions into account. S
... More
Presented by Mr. Teppei KITAHARA
on
21/07/2014
at
13:50
We discuss the properties of the Standard Model-like Higgs boson in the pMSSM, a 19/20 – dimensional parameter space that captures most of the relevant phenomenology of the general MSSM. Within this framework, we characterize the range of possible deviations in the Higgs couplings to standard model particles and examine the possibility of invisible Higgs decays. We show that precision Higgs coup
... More
Presented by Matthew CAHILL-ROWLEY
on
25/07/2014
at
15:55
We introduce a framework, based on an effective field theory approach, that allows one to
perform characterisation studies of the boson recently discovered at the LHC, for all the relevant channels and in a consistent, systematic and accurate way.
Presented by Dr. Kentarou MAWATARI
on
21/07/2014
at
16:55
While there is little doubt that the particle discovered in July 2012 by the
ATLAS and CMS collaborations is a Higgs boson, the question of its SM nature
is tackled through the measurement of its properties: spin, parity, and
couplings.
The study of its fermion decay modes is an important part of this research
programme, as evidenced by a number of analyses performed on the LHC Run 1
data by
... More
Presented by Mr. Nicolas MORANGE
on
22/07/2014
at
16:35
I will present predictions for the SM-Higgs-pair production channels at the LHC. Results, shown in arXiv:1401.7340, are at the NLO accuracy in QCD, and matched to parton showers by means of the MC@NLO method; hence, they are fully differential. I will show that for all channels in general, and for gluon-gluon fusion which is the dominant production channel, in particular, NLO corrections reduce th
... More
Presented by Dr. Eleni VRYONIDOU
on
22/07/2014
at
14:10
In the absence of direct discoveries, physics Beyond the Standard Model (BSM) can be parametrized by an effective field theory as an expansion in inverse powers of the New Physics scale.
This expansion serves as a guide for precision searches. In fact, the leading term in this expansion coincides with the SM: its symmetries and relations are well known and are being tested at colliders. In this
... More
Presented by Dr. Rick Sandeepan GUPTA
on
21/07/2014
at
15:30
Investigation of the structure of the Standard Model effective potential at very large field strengths opens a window towards new phenomena and can reveal properties of the UV completion of the SM. The map of the lifetimes of the vacua of the SM enhanced by nonrenormalizable scalar couplings has been compiled to show how new interactions modify stability of the electroweak vacuum. Whereas it is po
... More
Presented by Mr. Marek LEWICKI
on
24/07/2014
at
13:55
In this work, we use the results from Higgs searches in the $\gamma
\gamma$ and $\tau \tau$ decay channels at LHC and indirect bounds as
BR($B\toX_s\gamma$) to constrain the parameter space of a generic MSSM
Higgs sector. In our analysis, we reduce to the minimum the model input
and use only experimental information to restrict the scalar masses and
mixings. In particular, we include the late
... More
Presented by Dr. Oscar VIVES
on
25/07/2014
at
16:15
After the discovery of the Higgs boson with mass around 126 GeV it has
to be investigated if it is the Standard Model (SM) Higgs boson or the
Higgs boson of extensions beyond the SM (BSM). Among these,
supersymmetry (SUSY) belongs to the most popular and most intensely
studied BSM theories. The Higgs sector of the Next-to-Minimal
Supersymmetric Extension (NMSSM) consists of seven Higgs b
... More
Presented by Prof. Milada Margarete MUEHLLEITNER
on
25/07/2014
at
14:10
We discuss off-shell contributions in H->ZZ/WW and the signal-background interference in H->AA for the two main production mechanisms, Higgsstrahlung and vector boson fusion, at a linear collider.
In case of extended Higgs sectors the correct description of the former effect is of importance for the observance of heavy Higgses in ZZ/WW final states.
Presented by Stefan LIEBLER
on
24/07/2014
at
14:28
The measurements of the properties of the recently discovered Higgs
boson show good agreement with the predictions from the Standard Model.
The currently large uncertainties on the Higgs couplings will be
improved in the high-energy and high-luminosity phase of the LHC as
well as at a future Higgs factory, so that small deviations in the
Higgs couplings may manifest themselves. In this t
... More
Presented by Prof. Milada Margarete MUEHLLEITNER
on
22/07/2014
at
14:30
Within the SM, the masses of the electroweak vector bosons arise by the spontaneous breaking of electroweak symmetry by the Higgs field. The ATLAS and CMS experiments at the Large Hadron Collider (LHC), have reported the discovery of a new boson with a mass of approximately 125 GeV with a significance of five or more standard deviations each. Both observations show consistency with the expected
... More
Presented by Dr. Arnaud PIN
on
22/07/2014
at
14:50
The discovery of a Higgs boson with a mass of approximately 126 GeV in 2012 at the LHC has opened up a new era in understanding the nature of electroweak symmetry breaking and possibly completing the standard model of particle physics.
The major focus of physics analysis at the LHC now is the measurement of the properties of the Higgs boson. The latest combined results are presented using the γ ... More
Presented by Mr. Keisuke YOSHIHARA
on
22/07/2014
at
14:30
Within the SM, the masses of the electroweak vector bosons arise by the spontaneous breaking of electroweak symmetry by the Higgs ï¬eld. The ATLAS and CMS experiments at the Large Hadron Collider (LHC), have reported the discovery of a new boson with a mass of approximately 125 GeV with a signiï¬cance of ï¬ve or more standard deviations each. In this talk we present the latest measurements by t
... More
Presented by Stoyan STOYNEV
on
24/07/2014
at
14:13
Standard model Higgs
ATLAS
boson decay mode
Presented by Ms. Elodie TIOUCHICHINE
on
21/07/2014
at
13:30
The discovery of a new boson with a mass of approximately 125 GeV in 2012 at the LHC has opened a new era in understanding the nature of electroweak symmetry breaking. Since the ï¬rst observation in decays to γγ, WW, and ZZ boson pairs, an extensive set of measurements of the mass, couplings to W and Z bosons and the spin-parity quantum numbers, have revealed that the properties of the new boso
... More
Presented by Dr. Yuta TAKAHASHI
on
22/07/2014
at
16:15
I will review recent developments in the theoretical description of Higgs cross sections in supersymmetric models.
Presented by Prof. Robert HARLANDER
on
24/07/2014
at
13:30
We introduce the public computer program HiggsSignals, which can be used to constrain arbitrary Higgs sectors from measurements of Higgs masses and rates at colliders. Using this code, we derive constraints on the parameters of Higgs sectors beyond the Standard Model from all currently available channels for the observed LHC signal. The results are presented both in a model-independent framework w
... More
Presented by Oscar STÃ¥L
on
21/07/2014
at
16:15
We study the mass of the lightest CP-even Higgs boson in the deflected mirage mediation that is a quite general framework of the mediation of supersymmetry breaking, incorporating the case where all of the modulus-, the anomaly- and the gauge-mediated contributions to the soft supersymmetry breaking parameters become sizable. We evaluate the degree of tuning the so-called mu parameter required for
... More
Presented by Mr. Junichiro KAWAMURA
on
21/07/2014
at
14:30
The Two Higgs Doublet Model (2HDM) is one of the simplest extensions
of the Standard Model (SM). The discovery of the Higgs boson at the LHC, and
the fact that its properties seem to follow what is expected within the SM,
puts constrainst of the 2HDM. We will review those constraints and show that
there is still a great deal of parameter space left where extra scalars may
dwell.
Presented by Dr. Pedro FERREIRA
I discuss the current 2HDM situation after including Higgs data from the completed Run 1 of the LHC. Prospects for discovering the additional 2HDM Higgs bosons (beyond the 125.5 GeV state) are reviewed as are implications should the next LHC Run show increasingly SM-like results for the 125.5 GeV state. The role of a non-decoupling charged Higgs boson loop contribution to the Higgs-photon-photon
... More
Presented by John GUNION
on
22/07/2014
at
15:30
We discuss the current status of theoretical and experimental constraints on a Higgs singlet extension of the Standard Model. We focus on the case of a real Higgs singlet extension with the second neutral Higgs boson being in the mass range accessible to the LHC (0 GeV - 1TeV). We consider constraints from perturbative unitarity, electroweak oblique parameters, perturbativity of the couplings, and
... More
Presented by Tania ROBENS
on
21/07/2014
at
14:10
We discuss most recent results on the vacuum stability taking
into account the LHC Higgs and top data
Presented by Dr. Fedor BEZRUKOV
on
25/07/2014
at
15:30
In a natural theory of electroweak symmetry breaking, the degrees of freedom
that cure the hierarchy problem are expected to affect also the loop-induced
couplings of the Higgs to gluons and photons. However, in the inclusive
Higgs production rate measured so far at the LHC, the long-distance
contribution of the top quark and the short-distance contribution of new
physics cannot be disentangl
... More
Presented by Ennio SALVIONI
on
25/07/2014
at
14:30