Performance of the CMS electromagnetic calorimeter and its role in the hunt for the Higgs boson in the two-photon channel

The feasibility of a measurement of the partial decay width of the intermediate-mass Higgs boson(MH=120 GeV ) into two photons at a photon-photon collider is studied by a simulation. It is found that the two-photon decay width can be measured with the statistical error of 7.6% with the integrated luminosity of 10fb-1. We also discussed a possibility toward further improvement with sophisticated b-quark tagging technique.

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Role of the CMS electromagnetic calorimeter in the measurement of the Higgs boson properties and search for new physics

Nuclear and Particle Physics Proceedings ◽

10.1016/j.nuclphysbps.2015.09.155 ◽

2016 ◽

Vol 273-275 ◽

pp. 988-994 ◽

Cited By ~ 1

Author(s):

F. Ferri

Keyword(s):

Higgs Boson ◽

New Physics ◽

Electromagnetic Calorimeter

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NEW HUNT FOR AN INTERMEDIATE MASS HIGGS-BOSON IN PERIPHERAL ULTRARELATIVISTIC HEAVY-ION COLLISIONS

Modern Physics Letters A ◽

10.1142/s021773239500260x ◽

1995 ◽

Vol 10 (32) ◽

pp. 2471-2477 ◽

Cited By ~ 2

Author(s):

MARIO VIDOVIĆ ◽

MARTIN GREINER ◽

GERHARD SOFF

Keyword(s):

Higgs Boson ◽

Heavy Ion Collisions ◽

Collision Energy ◽

Gluon Fusion ◽

Heavy Ion ◽

Intermediate Mass ◽

Two Photon ◽

Ion Collisions ◽

Text Production ◽

Ultrarelativistic Heavy Ion Collisions

We reopen the discussion on the two-photon production of the intermediate mass Higgs-boson in peripheral ultrarelativistic heavy-ion collisions at LHC. Due to larger expected luminosity, larger collision energy and higher photon energies, the Higgs production rate is enlarged by more than a factor of 10 in Ca+Ca collisions compared to Pb+Pb collisions. Besides the background of direct [Formula: see text]-production via two-photon fusion, we also discuss photon-gluon fusion into [Formula: see text].

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THE ATLAS ELECTROMAGNETIC CALORIMETERS: FEATURES AND PERFORMANCE

International Journal of Modern Physics A ◽

10.1142/s0217751x10049323 ◽

2010 ◽

Vol 25 (09) ◽

pp. 1739-1760 ◽

Cited By ~ 1

Author(s):

LUCIANO MANDELLI

Keyword(s):

Higgs Boson ◽

Response Time ◽

Energy Resolution ◽

Liquid Argon ◽

Electromagnetic Calorimeter ◽

Simplified Model ◽

Energy Position ◽

And Performance ◽

Electromagnetic Calorimeters

In this paper it is shown how a sampling electromagnetic calorimeter based on the liquid argon technique satisfies the very demanding requirements of an experiment at the LHC. Section 2 discusses, using a simplified model, the performance that can be achieved in terms of response time, energy resolution and transverse granularity. Section 3 describes how the calorimeters are realized in ATLAS, their segmentation and how from the readout pulses the energy deposited in the calorimeter is computed. The motivations of a presampler detector in front of the calorimeter are also discussed. Section 4 describes how the energy, position and direction of an electron and a photon are computed. Finally, Sec. 5 briefly illustrates the rejection power of the calorimeter against the hadrons and mentions how a Higgs boson signal in the γγ channel can already be detected with a luminosity of 10 fb-1.

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