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A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample…

高能物理 - 实验 · 物理学 2015-06-16 CMS Collaboration

A search is conducted for a new beyond-the-Standard-Model boson using events where a Higgs boson with mass 125 GeV decays to four leptons ($\ell =$ $e$ or $\mu$). This decay is presumed to occur via an intermediate state which contains one…

高能物理 - 实验 · 物理学 2018-07-25 ATLAS Collaboration

After the first successful LHC run in 2010-2012, plans are actively advancing for a series of upgrades leading eventually to about above times the design-luminosity in about ten years. The larger luminosity will allow to perform precise…

仪器与探测器 · 物理学 2014-09-18 C. Gemme

A search for Higgs boson decays into a $Z$ boson and a light resonance in two-lepton plus jet events is performed, using a $pp$ collision dataset with an integrated luminosity of 139 fb$^{-1}$ collected at $\sqrt{s}=13$ TeV by the ATLAS…

高能物理 - 实验 · 物理学 2021-01-15 ATLAS Collaboration

A prospective analysis for the search of the Standard Model (SM) Higgs boson with the CMS detector is presented in the context of the early LHC data. The aim is to establish an analysis strategy for inclusive production of the Higgs boson…

高能物理 - 唯象学 · 物理学 2008-10-09 Rebeca Gonzalez Suarez

We investigate the LHC discovery prospects for a heavy Higgs boson decaying into the Standard Model Higgs boson and additional weak bosons. We consider a generic model-independent new physics configuration where this decay proceeds via a…

高能物理 - 唯象学 · 物理学 2018-04-11 Baradhwaj Coleppa , Benjamin Fuks , P. Poulose , Shibananda Sahoo

R-hadrons are predicted in a range of supersymmetric scenarios including split-supersymmetry and gauge-mediated supersymmetry breaking. In this paper, the discovery potential of the ATLAS experiment for gluino and stop-based R-hadrons is…

高能物理 - 实验 · 物理学 2019-08-13 Philippe Mermod

Results are presented on the discovery potential for MSSM neutral Higgs bosons in the Mh-{max}scenario. The region of large tan beta, between 15 and 50, and mass between ~ 95 and 130 GeV is considered in the framework of the ATLAS…

高能物理 - 实验 · 物理学 2008-11-26 S. Gentile , H. Bilokon , V. Chiarella , G. Nicoletti

A search for evidence of invisible-particle decay modes of a Higgs boson produced in association with a Z boson at the Large Hadron Collider is presented. No deviation from the Standard Model expectation is observed in 4.5 fb$^{-1}$ (20.3…

高能物理 - 实验 · 物理学 2014-10-23 ATLAS Collaboration

The prospects for discovering Higgs particles and studying their fundamental properties at future high--energy electron--positron and photon-photon colliders are reviewed. Both the Standard Model Higgs boson and the Higgs particles of its…

高能物理 - 唯象学 · 物理学 2009-09-25 Jan Kalinowski

The ATLAS detector at the LHC is used to search for high-mass states, such as heavy charged gauge bosons (W'), decaying to a charged lepton (electron or muon) and a neutrino. Results are presented based on the analysis of pp collisions at a…

高能物理 - 实验 · 物理学 2012-08-27 ATLAS Collaboration

A measurement of the Standard Model Higgs boson produced in association with a $W$ or $Z$ boson and decaying into a pair of $\tau$-leptons is presented. This search is based on proton-proton collision data collected at $\sqrt{s}=13$ TeV by…

高能物理 - 实验 · 物理学 2024-09-09 ATLAS Collaboration

A search for heavy neutral Higgs bosons is performed using the LHC Run 2 data, corresponding to an integrated luminosity of 139 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}=13$ TeV recorded with the ATLAS detector. The search for…

高能物理 - 实验 · 物理学 2020-09-17 ATLAS Collaboration

A search is presented for a heavy resonance $Y$ decaying into a Standard Model Higgs boson $H$ and a new particle $X$ in a fully hadronic final state. The full Large Hadron Collider Run 2 dataset of proton-proton collisions at $\sqrt{s}=…

高能物理 - 实验 · 物理学 2023-12-06 ATLAS Collaboration

A search for a Higgs boson in the decay channel ${\rm H} \rightarrow {\rm ZZ}^{(*)}$ with each Z boson decaying to an electron or muon pair is presented using pp collisions from the LHC at $\sqrt s$ = 7 TeV. The data analyzed correspond to…

高能物理 - 实验 · 物理学 2019-08-14 Mario Pelliccioni

An overview of recent theoretical results on the Higgs boson and its discovery strategy at ATLAS and CMS will be presented, focusing on the main Higgs analysis effective with low integrated luminosity (less than 30 fb^-1).

高能物理 - 唯象学 · 物理学 2010-11-11 Sara Bolognesi , Giuseppe Bozzi , Andrea Di Simone

In several extensions of the Standard Model, the top quark can decay into a bottom quark and a light charged Higgs boson H+, t to bH+, in addition to the Standard Model decay t to bW. Since W bosons decay to the three lepton generations…

高能物理 - 实验 · 物理学 2013-06-11 ATLAS Collaboration

The combined results of the search for the Standard Model Higgs boson from the four LEP experiments are given. These results are based on the full data sample collected by ALEPH, DELPHI, L3 and OPAL at centre-of-mass energies up to 209GeV,…

高能物理 - 实验 · 物理学 2007-05-23 F. Cerutti

Two simple ways by which the standard signals of the Standard Model Higgs boson can be depleted are: its couplings to fermions and gauge bosons can be suppressed by a universal factor, and part of its branching fraction can be drained into…

高能物理 - 唯象学 · 物理学 2023-03-29 Prudhvi N. Bhattiprolu , James D. Wells

Studies of the spin and parity quantum numbers of the Higgs boson are presented, based on proton-proton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin-parity JP = 0+ hypothesis is compared with…

高能物理 - 实验 · 物理学 2013-10-01 ATLAS Collaboration