A
bstract
We present a phenomenological study of a CP-violating two-Higgs-doublet Model with type-II Yukawa couplings at the Large Hadron Collider (LHC). In the light of recent LHC data, we focus on ...the parameter space that survives the current and past experimental constraints as well as theoretical bounds on the model. Once the phenomeno-logical scenario is set, we analyse the scope of the LHC in exploring this model through the discovery of a charged Higgs boson produced in association with a
W
boson, with the former decaying into the lightest neutral Higgs and a second
W
state, altogether yielding a
signature, of which we exploit the
W
+
W
−
semileptonic decays.
A luminosity determination based on thermal neutron counting with six MPX silicon pixel devices installed in the ATLAS cavern is presented. Recently, the ATLAS Collaboration published final s=8 TeV ...luminosity results. This made possible to perform a detailed comparison and verify the potential of the thermal neutron counting as a novel method for luminosity measurements to supplement the well-established presently used procedures. This measurement is unique to the MPX network and has the advantage that the neutrons, which pass the MPX devices, cannot result from activation processes of material nearby. Good agreement is found between the MPX neutron counting results and the ATLAS reference luminosity. The differences between the ATLAS and MPX luminosity measurements are described by a Gaussian distribution with width of 1.5%.
Searches for charginos, neutralinos, and sleptons at LEP2 centre-of-mass energies from 130 GeV to 189 GeV a shortly reviewed in the spirit of a lower limit on the mass of the Lightest Supersymmetric ...Particle within the MSSM framework. R-parity conservation has been assumed. Higgs mass limits are briefly mentioned.
Conceptual design of the first level trigger for the SDC experiment Lipniacka, A
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment,
06/1995, Letnik:
360, Številka:
1-2
Journal Article, Conference Proceeding
Recenzirano
Odprti dostop
We report on a conceptual design of the first level trigger for the SDC experiment at the SSC. Level 1 algorithms employ barrel and intermediate trackers, and electromagnetic and hadronic ...calorimeters. Results of simulations of background rates and efficiencies are presented together with a discussion of the simulation method. Tracking and calorimetric triggers are discussed in detail.
We present a phenomenological study of a CP-violating two-Higgs-doublet Model with type-II Yukawa couplings at the Large Hadron Collider (LHC). In the light of recent LHC data, we focus on the ...parameter space that survives the current and past experimental constraints as well as theoretical bounds on the model. Once the phenomenological scenario is set, we analyse the scope of the LHC in exploring this model through the discovery of a charged Higgs boson produced in association with a W boson, with the former decaying into the lightest neutral Higgs and a second W state, altogether yielding a b\bar b W^+W^- signature, of which we exploit the W^+W^- semileptonic decays.
A small set of final prototypes of the ATLAS Inner Detector silicon tracker (Pixel and SCT) were used to take data during the 2004 Combined Test Beam. Data were collected from runs with beams of ...different flavour (electrons, pions, muons and photons) with a momentum range of 2 to 180 GeV/c. Four independent methods were used to align the silicon modules. The corrections obtained were validated using the known momenta of the beam particles and were shown to yield consistent results among the different alignment approaches. From the residual distributions, it is concluded that the precision attained in the alignment of the silicon modules is of the order of 5 micrometers in their most precise coordinate.
PDF
