Conveners
WG3: Electroweak and Searches: Higgs, part #1 // Di-Bosons
- Markus Stoye (CERN)
- Alessandro Vicini (Universitร degli Studi e INFN Milano (IT))
- Alexander Oh (University of Manchester (GB))
WG3: Electroweak and Searches: Higgs, part #2 // SUSY
- There are no conveners in this block
WG3: Electroweak and Searches: BSM searches, part #1
- There are no conveners in this block
WG3: Electroweak and Searches: BSM searches, part #2 // Electroweak precision measurements
- Alexander Oh (University of Manchester (GB))
- Markus Stoye (CERN)
- Alessandro Vicini (Universitร degli Studi e INFN Milano (IT))
Sabino Meola
(Universita e INFN (IT))
23/04/2013, 08:30
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
CMS results are presented on the measurement of properties of the Higgs-like particle discovered last summer with a mass in the range of 125-126 GeV, based on the full statistics of about 25 fb-1, collected in 2011 and 2012 at 7 and 8 TeV respectively. A discussion will be given on the mass measurement, couplings and the spin-parity properties of this new particle. The most recent results will...
Andre Georg Holzner
(Univ. of California San Diego (US))
23/04/2013, 08:50
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Results are presented on the study and search for Higgs-like particles decaying into a ZZ, WW and 2 photon final states, based on the full statistics of about 25 fb-1, collected in 2011 and 2012 at 7 and 8 TeV respectively with the CMS experiment. Different production channels namely inclusive, VBF and associated production are studied for the 2-photon final state. The following ZZ decay...
Somnath Choudhury
(CEA - Saclay (FR))
23/04/2013, 09:10
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Results are presented on the study of the Higgs-like particle at 125 GeV decaying into final states consisting of either two taus, or a b anti-b quark pair, based on the full statistics of about 25 fb-1, collected in 2011 and 2012 at 7 and 8 TeV respectively with the CMS experiment. Leptonic and hadronic decay channels for the tau lepton are included in the search. Different production...
Pier Paolo Giardino
(Sezione di Pisa (IT))
23/04/2013, 09:30
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
The recently discovered resonance at 125 GeV has properties remarkably close to those of the Standard Model Higgs boson.
Therefore, it is fundamental to investigate them thoroughly.
I will review the status of our understandings of this particle's properties and I will show the results of our fits of all presently available data.
James Alexander Kraus
(University of Mississippi (US))
23/04/2013, 09:50
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
We present the combination of searches for the Standard Model Higgs boson at a center-of-mass energy of sqrt(s)=1.96 TeV, using the full Run 2 dataset collected with the D0 detector at the Fermilab Tevatron collider. The major contributing processes include associated production (WH-->lvbb, ZH-->vvbb, ZH-->llbb, and WH-->WWW(*)) and gluon fusion (gg-->H-->WW(*)). The significant improvements...
Dr
Zhijun Liang
(University of Oxford)
23/04/2013, 11:00
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
The integrated and differential fiducial cross sections for the production of a W or Z boson in association with a high-energy photon are measured using 7 TeV pp collisions. Events are selected using leptonic decays of the W and Z bosons. The data are used to test the electroweak sector of the Standard Model and search for evidence for new phenomena. The measurements are used to probe...
Martin Zeman
(Czech Technical University (CZ))
23/04/2013, 11:20
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Diboson production cross sections have been measured for WW, WZ and ZZ pairs at 7 and 8 TeV pp collisions using the ATLAS detector. The measurements require heavy bosons to decay leptonically, including the Z->nu nu decay channel. The results are first obtained in phase space regions defined by the decay kinematics and then extrapolated to the full phase space. The measurements are compared...
Brian Edward Lindquist
(State University of New York (US))
23/04/2013, 11:40
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
A study of WW/WZ production in the semileptonic final state using proton-proton
collisions at sqrt(s) = 7 TeV recorded with the ATLAS detector is presented.
The cross section is measured in the WW/WZ -> lepton nu qยฏq?
decay channel where the lepton can be a muon or an electron.
The measured cross section is consistent with the Standard Model expectation.
Tristan Arnoldus Du Pree
(Universite Catholique de Louvain (BE))
23/04/2013, 12:00
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
The associated production of jets and vector bosons allows for stringent tests of perturbative QCD calculations and is sensitive to the possible presence of new physics beyond the Standard Model. Measurements of jet production rates in association with W, Z or photons, in proton-proton collisions at 7 TeV or 8 TeV center-of-mass energy is presented, using data collected with the CMS detector....
James Alexander Kraus
(University of Mississippi (US))
23/04/2013, 12:20
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
We present results of diboson production studies with the D0 detector at sqrt(s) = 1.96 TeV, including measurements of the WW cross section in the lvlโv' channels and the ZZ cross section in the lllโlโ (l,lโ = e,mu) channels using data corresponding to integrated luminosity of 9.7 fb-1. We also present measurements of anomalous WWgamma and WWZ trilinear gauge boson couplings from WW and WZ...
Luis Alejandro Perez Perez
(INFN Sezione di Pisa)
23/04/2013, 14:00
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Searches for low mass CP-odd Higgs boson (A0) predicted
in non-minimal supersymmetric extensions of the Standard Model,
and for dark-sector Higgs-like and gauge bosons motivated by
recent astrophysical observations, have been performed at Babar
studying the radiative decays of the Y(nS) resonances, with n=1,2,3,
and multiparticle production in e+e- annihilations.
Stringent limits on the...
Isabella Masina
23/04/2013, 14:20
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
The measurements of the Higgs boson and top quark masses can be used to extrapolate the Standard Model Higgs potential at energies up to the Planck scale. Adopting a NNLO renormalization procedure, we: i) find that electroweak vacuum stability is at present allowed, discuss the associated theoretical and experimental errors and the prospects for its future tests; ii) determine the boundary...
Philip James Ilten
(University College Dublin (IE))
23/04/2013, 14:40
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Limits on the cross-section times branching fraction for Higgs particles, produced in pp collisions at sqrt(s) = 7 TeV, and decaying to two taus with pseudorapidities between 2 and 4.5, are presented.
The result is based on a dataset of 1.0 fb-1 collected by the LHCb detector. Model independent upper limits on neutral Higgs cross-section times branching fraction are set and are compared to...
Adrian Perieanu
(Rheinisch-Westfaelische Tech. Hoch. (DE))
23/04/2013, 15:00
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Results are presented from CMS on searches for Higgs-like particles in models beyond the Standard Model and searches for rare or exotic decays of the 125 GeV particle. Light Higgses as predicted in the NMSSM models
are searched for. Decays of the 125 GeV Higgs-like particle into muons are explored. The most recent results will be presented.
Marco Agustoni
(Universitaet Bern (CH))
23/04/2013, 15:20
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Many supersymmetry models feature gauginos and also sleptons with masses less than a few hundred GeV. These can give rise to direct pair production rates at the LHC that can be observed in the data sample recorded by the ATLAS detector. The talk presents results from searches for gaugino and slepton pair production in final states with leptons.
Peter Thomassen
(Rutgers, State Univ. of New Jersey (US))
23/04/2013, 15:40
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
In this talk, the latest results from CMS on searches for new physics with multiple leptons in the final state are presented using up to 20/fb of data from the 8 TeV LHC run of 2012. Interpretations of results in terms of RP conserving as well as violating models of supersymmetry are presented for weak and strong production mechanisms. For RP conserving models, both neutralinos and gravitinos...
Loukas Gouskos
(University of Athens (GR))
23/04/2013, 16:30
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
In this talk, the latest results from CMS on direct stop or sbottom pair production are reviewed. We present searches preformed for different stop and sbottom decay modes using up to 20/fb of data from the 8 TeV LHC run of 2012.
Priscilla Pani
(NIKHEF (NL))
23/04/2013, 16:50
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Naturalness arguments for weak-scale supersymmetry favour supersymmetric partners of the third generation quarks with masses not too far from those of their Standard Model counterparts. Top or bottom squarks with masses less than a few hundred GeV can also give rise to direct pair production rates at the LHC that can be observed in the data sample recorded by the ATLAS detector. The talk...
Elena Romero Adam
(Universidad de Valencia (ES))
23/04/2013, 17:10
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. This talk summarises recent ATLAS results on inclusive searches for supersymmetric squarks and gluinos in events containing jets, missing transverse momentum with and without light leptons, taus or photons.
Carolina Deluca
(NIKHEF (NL))
23/04/2013, 17:30
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Naturalness arguments for weak-scale supersymmetry favour supersymmetric partners of the third generation quarks with masses not too far from those of their Standard Model counterparts. Real and virtual production of third generation squarks via decay of a gluino can be significant if the mass of the gluino does not exceed the TeV scale. The talk presents recent ATLAS results from searches for...
Matthew King
(Kobe University (JP))
23/04/2013, 17:50
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
An extended QCD sector beyond the minimal supersymmetric standard model or the admission of R-parity violation introduces new signatures to the search for supersymmetry at the LHC. Strongly interacting resonances may decay to jets, sleptons may decay via lepton-flavour violating processes and lightest supersymmetric particles may decay into many leptons with or without missing transverse...
Mr
Robert Schoefbeck
(Hephy Vienna),
Robert Schoefbeck
(Austrian Academy of Sciences (AT))
23/04/2013, 18:10
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
In this talk, the latest results from CMS on inclusive searches for squark and gluino production at the LHC are reviewed, including third generation signatures. A variety of complementary final state signatures and methods are presented using up to 20/fb of data from the 8 TeV LHC run of 2012.
Katarzyna Wichmann
(DESY)
24/04/2013, 14:00
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
A search for first generation leptoquarks was performed in
polarized electron-proton collider data
recorded with the ZEUS detector at HERA in the years 2003-2007.
They were analyzed for final states with an electron and jets or with
missing transverse momentum and jets and a search for resonance structures
or other deviations from the Standard Model predictions
in the spectra of the...
Simone Zimmermann
(Universitaet Bonn (DE))
24/04/2013, 14:20
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Resonances decaying into a pair of particles are an obvious
place to look for phenomena beyond the Standard Model.
This talk summarizes recent results on searches for resonances in pairs of jets, lepton
pairs, leptons and missing transverse energy and pairs of photons. Various models
models are considered such the Z' and W', the Randall-Sundrum gravitons as
well as the ADD large extra...
Mr
Peter Vladimir Loscutoff
(Lawrence Berkeley National Lab. (US))
24/04/2013, 14:40
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
The study of electroweak boson pair production is a powerful
test of the spontaneously broken gauge symmetry of the Standard Model
(SM) and can be used to search for phenomena beyond the SM. Heavy
particles decaying to gauge boson pairs are predicted by many scenarios
of new physics, including Extra Dimensions, and Technicolor models. We
present generic searches for a heavy particle...
Preema Rennee Pais
(University of Massachusetts (US))
24/04/2013, 15:00
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Several extensions of the Standard Model predict the existence
of massive long-lived particles, some of these postulate the existence of
a hidden sector of particles. We report on searches for
weakly-interacting long-lived particles decaying to collimated
lepton-jets far away from the interaction point, and for production of
multicharged particles. The talk presents the final results...
Roger Caminal Armadans
(IFAE - Barcelona (ES))
24/04/2013, 15:20
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
The compactification of the extra spatial dimensions in the
Arkani-Hamed, Dimopoulos, and Dvali model results in a Kaluza-Klein
tower of massive graviton modes. These graviton modes are produced in
association with a jet or a photon and do not interact with the
detectors, resulting in a monojet or a monophoton signature. This
channel is also sensitive to a large class of SUSY models. The...
Jordan S Webster
(University of Chicago (US))
24/04/2013, 15:40
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Various extensions of the Standard Model predict the existence
of new types of quarks. We report on several search channels such as
vector-like quarks decaying to a Higgs boson and a top quark or to
a W boson and a b quark. The talk presents results from
searches for new resonances decaying to a top-antitop pair, including
the use of boosted top quark reconstruction techniques.
These...
David Ren-Hwa Yu
(Lawrence Berkeley National Lab. (US))
25/04/2013, 08:30
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Events containing several leptons are useful probes of new
phenomena due to the low background from Standard Model processes.
We look for anomalous production of prompt like-sign leptons or events with
three or more leptons, as well as search for excited leptons, heavy leptons
and heavy neutrinos. The searches use data recorded in 2012 at sqrt(s)=8 TeV
centre-of-mass energy by the ATLAS...
Carl Vuosalo
(Ohio State University (US))
25/04/2013, 08:50
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
This talk will cover a wide range of new physics searches including many from the full dataset of 8 TeV pp collision from 2012. Included in the talk will be new physics searches in decays to multi-jet final states, leptons plus jets, and also searches for heavy long-lived charged particles.
Philipp Millet
(Rheinisch-Westfaelische Tech. Hoch. (DE))
25/04/2013, 09:10
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
A search for new physics in final states with an electron or a muon and a low mass neutrino is presented based on the full 2012 data set at sqrt(s)=8TeV. The analysis searches for an excess of events above the SM expectation in the l+MET transverse mass spectrum. The results are interpreted in several different models, such as a new, heavy SM-like boson W' with and without interference with...
Stefan Antonius Schmitz
(Rheinisch-Westfaelische Tech. Hoch. (DE))
25/04/2013, 09:30
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Additional heavy leptonic resonances (e.g. Z', W') are predicted by a number of new physics models. Models with extra dimensions include not only the possibility for resonant signatures like predicted in RS scenarios, but might also result in a non-resonant enhancement of high mass lepton pairs as suggested by the ADD model of large extra dimensions.
CMS has performed searches for both...
Dr
Elena Accomando
(University of Southampton)
25/04/2013, 09:50
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
Searches for extra heavy W' and Z'-bosons in the leptonic Drell-Yan channel at the LHC are favoured by present data. We focus on the common approximations used in theoretical and experimental analyses: neglecting interference and finite width effects. And present the implications of adopting such approximations on the data interpretation and the extraction of exclusion limits on W' and...
Sergey Podolsky
(UCL (Louvain-la-Neuve)),
Siarhei Padolski
(Universite Catholique de Louvain (BE))
25/04/2013, 10:10
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
A precision measurement of the ratio RK of the rates of kaon leptonic decays
K+- --> e+- nu and K+- --> mu+- nu with the full minimum bias data sample
collected with low intensity 75 GeV/c beam by the NA62 experiment at CERN in
2007-2008 is reported. The result, obtained by analyzing ~150,000
reconstructed K+- --> e+- nu candidates with 11%
background contamination, has a record precision...
Luca Barze
(CERN)
25/04/2013, 11:00
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
We present a theoretical overview of the present status and prospects for electroweak measurements at LHC, leading to precision tests of the standard model. The state of the art of Monte Carlo event generators is illustrated and special attention is paid to the interplay between QED and QCD, the measurement of the W mass and the effective weak mixing angle.
Regina Caputo
(Johannes-Gutenberg-Universitaet Mainz (DE))
25/04/2013, 11:20
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
A measurement of the forward-backward asymmetry for the neutral current Drell Yan process is presented. The asymmetry is measured using dielectron and dimuon final states with sqrt(s) =7 TeV data. For the dielectron channel, the measurement includes electrons detected in the forward calorimeter which extends the covered phase space to the region less sensitive to the PDF uncertainties. The...
Breese Quinn
(University of Mississippi)
25/04/2013, 11:40
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
We present a measurement of the W boson mass using data corresponding to an integrated luminosity of 4.3 fb-1 collected with the D0 detector during Run 2 at the Fermilab Tevatron ppbar collider. With a sample of 1,677,394 W--> e nu candidate events, we measure M_W = 80.367 +/- 0.026 GeV. This result is combined with an earlier D0 result determined using an independent Run 2 data sample,...
Lee Tomlinson
(University of Manchester (GB))
25/04/2013, 12:00
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
The presence of large logarithms in QCD corrections to observables spoils the validity of a calculation truncated at finite order and calls for an all-orders approach. The QT spectrum of massive lepton pairs, produced in hadron colliders by the Drell-Yan mechanism, has received a great deal of attention in electroweak phenomenology. We present and discuss a next-to-next-to-leading log (NNLL)...
Elena Yatsenko
(Deutsches Elektronen-Synchrotron (DE))
25/04/2013, 12:20
Electroweak Physics and Beyond the Standard Model
Talk in Parallel Session at DIS2013
A measurement of angular correlations in DrellโYan lepton pairs via the phi* observable is presented. This variable probes the same physics as the Z/gamma* boson transverse momentum (pT) with a better experimental resolution, especially for low transverse momenta. The measurement using phi* and the direct measurement of pT are compared to predictions based on QCD calculations and predictions...
