Search results for: S. De Cecco

Items from 1 to 20 out of 169 results

article

Electroluminescence pulse shape and electron diffusion in liquid argon measured in a dual-phase TPC

P. Agnes, I.F. M. Albuquerque, T. Alexander, A.K. Alton, more

Nuclear Instruments and Methods in Physics Research Section A: Accelerators,... > 2018 > 904 > C > 23-34

We report the measurement of the longitudinal diffusion constant in liquid argon with the DarkSide-50 dual-phase time projection chamber. The measurement is performed at drift electric fields of 100 V/cm, 150 V/cm, and 200 V/cm using high statistics 39 Ar decays from atmospheric argon. We derive an expression to describe the pulse shape of the electroluminescence signal (S2) in dual-phase TPCs...

article

Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the ℓℓbb final state in pp collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

Physics Letters B > 2018 > 783 > C > 392-414

A search for a heavy neutral Higgs boson, A, decaying into a Z boson and another heavy Higgs boson, H, is performed using a data sample corresponding to an integrated luminosity of 36.1 fb⁻¹ from proton–proton collisions at s=13 TeV recorded in 2015 and 2016 by the ATLAS detector at the Large Hadron Collider. The search considers the Z boson decaying to electrons or muons and the H boson into a pair...

article

DarkSide-20k: A 20 tonne two-phase LAr TPC for direct dark matter detection at LNGS

C. E. Aalseth, F. Acerbi, P. Agnes, I. F. M. Albuquerque, more

The European Physical Journal Plus > 2018 > 133 > 3 > 1-129

. Building on the successful experience in operating the DarkSide-50 detector, the DarkSide Collaboration is going to construct DarkSide-20k, a direct WIMP search detector using a two-phase Liquid Argon Time Projection Chamber (LAr TPC) with an active (fiducial) mass of 23 t (20 t). This paper describes a preliminary design for the experiment, in which the DarkSide-20k LAr TPC is deployed within a...

article

Search for diboson resonances with boson-tagged jets in pp collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

Physics Letters B > 2018 > 777 > C > 91-113

Narrow resonances decaying into WW, WZ or ZZ boson pairs are searched for in 36.7 fb⁻¹ of proton–proton collision data at a centre-of-mass energy of s=13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015 and 2016. The diboson system is reconstructed using pairs of large-radius jets with high transverse momentum and tagged as compatible with the hadronic decay of high-momentum...

article

Measurement of the exclusive γγ→μ+μ− process in proton–proton collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

Physics Letters B > 2018 > 777 > C > 303-323

The production of exclusive γγ→μ+μ− events in proton–proton collisions at a centre-of-mass energy of 13 TeV is measured with the ATLAS detector at the LHC, using data corresponding to an integrated luminosity of 3.2 fb⁻¹. The measurement is performed for a dimuon invariant mass of 12GeV<mμ+μ−<70GeV. The integrated cross-section is determined within a fiducial acceptance region of the ATLAS detector...

article

Measurement of differential cross sections of isolated-photon plus heavy-flavour jet production in pp collisions at s=8 TeV using the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

Physics Letters B > 2018 > 776 > C > 295-317

This Letter presents the measurement of differential cross sections of isolated prompt photons produced in association with a b-jet or a c-jet. These final states provide sensitivity to the heavy-flavour content of the proton and aspects related to the modelling of heavy-flavour quarks in perturbative QCD. The measurement uses proton–proton collision data at a centre-of-mass energy of 8 TeV recorded...

article

Search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a Z boson in pp collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

Physics Letters B > 2018 > 776 > C > 318-337

A search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a leptonically decaying Z boson in proton–proton collisions at s=13 TeV is presented. This search uses 36.1 fb−1 of data collected by the ATLAS experiment at the Large Hadron Collider. No significant deviation from the expectation of the Standard Model backgrounds is observed. Assuming the Standard...

article

Measurement of the cross-section for electroweak production of dijets in association with a Z boson in pp collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

Physics Letters B > 2017 > 775 > C > 206-228

The cross-section for the production of two jets in association with a leptonically decaying Z boson (Zjj ) is measured in proton–proton collisions at a centre-of-mass energy of 13 TeV, using data recorded with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 3.2 fb⁻¹. The electroweak Zjj cross-section is extracted in a fiducial region chosen to enhance...

article

Search for new phenomena in high-mass diphoton final states using 37 fb−1 of proton–proton collisions collected at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

Physics Letters B > 2017 > 775 > C > 105-125

Searches for new phenomena in high-mass diphoton final states with the ATLAS experiment at the LHC are presented. The analysis is based on pp collision data corresponding to an integrated luminosity of 36.7 fb⁻¹ at a centre-of-mass energy s=13 TeV recorded in 2015 and 2016. Searches are performed for resonances with spin 0, as predicted by theories with an extended Higgs sector, and for resonances...

article

Measurement of jet pT correlations in Pb+Pb and pp collisions at sNN=2.76 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

Physics Letters B > 2017 > 774 > C > 379-402

Measurements of dijet pT correlations in Pb+Pb and pp collisions at a nucleon–nucleon centre-of-mass energy of sNN=2.76 TeV are presented. The measurements are performed with the ATLAS detector at the Large Hadron Collider using Pb+Pb and pp data samples corresponding to integrated luminosities of 0.14 nb−1 and 4.0 pb−1, respectively. Jets are reconstructed using the anti-kt algorithm with radius...

article

Search for heavy resonances decaying to a W or Z boson and a Higgs boson in the qq¯(′)bb¯ final state in pp collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

Physics Letters B > 2017 > 774 > C > 494-515

A search for heavy resonances decaying to a W or Z boson and a Higgs boson in the qq¯(′)bb¯ final state is described. The search uses 36.1 fb−1 of proton–proton collision data at s=13 TeV collected by the ATLAS detector at the CERN Large Hadron Collider in 2015 and 2016. The data are in agreement with the Standard Model expectations, with the largest excess found at a resonance mass of 3.0 TeV with...

article

ATLAS Collaboration

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

Nuclear Physics A > 2017 > 967 > C > 942-964

article

Measurement of the W+W− production cross section in pp collisions at a centre-of-mass energy of s=13 TeV with the ATLAS experiment

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

Physics Letters B > 2017 > 773 > C > 354-374

The production of opposite-charge W-boson pairs in proton–proton collisions at s=13 TeV is measured using data corresponding to 3.16 fb⁻¹ of integrated luminosity collected by the ATLAS detector at the CERN Large Hadron Collider in 2015. Candidate W-boson pairs are selected by identifying their leptonic decays into an electron, a muon and neutrinos. Events with reconstructed jets are not included...

article

Measurement of the cross section for inclusive isolated-photon production in pp collisions at s=13 TeV using the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

Physics Letters B > 2017 > 770 > C > 473-493

Inclusive isolated-photon production in pp collisions at a centre-of-mass energy of 13 TeV is studied with the ATLAS detector at the LHC using a data set with an integrated luminosity of 3.2 fb−1. The cross section is measured as a function of the photon transverse energy above 125 GeV in different regions of photon pseudorapidity. Next-to-leading-order perturbative QCD and Monte Carlo event-generator...

article

High-ET isolated-photon plus jets production in pp collisions at s=8 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

Nuclear Physics B > 2017 > 918 > C > 257-316

The dynamics of isolated-photon plus one-, two- and three-jet production in pp collisions at a centre-of-mass energy of 8 TeV are studied with the ATLAS detector at the LHC using a data set with an integrated luminosity of 20.2 fb−1. Measurements of isolated-photon plus jets cross sections are presented as functions of the photon and jet transverse momenta. The cross sections as functions of the azimuthal...

article

Search for new resonances decaying to a W or Z boson and a Higgs boson in the ℓ+ℓ−bb¯, ℓνbb¯, and νν¯bb¯ channels with pp collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

Physics Letters B > 2017 > 765 > C > 32-52

A search is presented for new resonances decaying to a W or Z boson and a Higgs boson in the ℓ+ℓ−bb¯, ℓνbb¯, and νν¯bb¯ channels in pp collisions at s=13 TeV with the ATLAS detector at the Large Hadron Collider using a total integrated luminosity of 3.2 fb⁻¹. The search is conducted by looking for a localized excess in the WH/ZH invariant or transverse mass distribution. No significant excess is observed,...

article

Measurement of W boson angular distributions in events with high transverse momentum jets at s=8 TeV using the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

Physics Letters B > 2017 > 765 > C > 132-153

The W boson angular distribution in events with high transverse momentum jets is measured using data collected by the ATLAS experiment from proton–proton collisions at a centre-of-mass energy s=8 TeV at the Large Hadron Collider, corresponding to an integrated luminosity of 20.3 fb−1. The focus is on the contributions to W+jets processes from real W emission, which is achieved by studying events where...

article

Search for dark matter in association with a Higgs boson decaying to b-quarks in pp collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

Physics Letters B > 2017 > 765 > C > 11-31

A search for dark matter pair production in association with a Higgs boson decaying to a pair of bottom quarks is presented, using 3.2 fb⁻¹ of pp collisions at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the LHC. The decay of the Higgs boson is reconstructed as a high-momentum bb¯ system with either a pair of small-radius jets, or a single large-radius jet with substructure...

article

Search for heavy resonances decaying to a Z boson and a photon in pp collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

Physics Letters B > 2017 > 764 > C > 11-30

This Letter presents a search for new resonances with mass larger than 250 GeV, decaying to a Z boson and a photon. The dataset consists of an integrated luminosity of 3.2 fb⁻¹ of pp collisions collected at s=13 TeV with the ATLAS detector at the Large Hadron Collider. The Z bosons are identified through their decays either to charged, light, lepton pairs (e+e−, μ+μ−) or to hadrons. The data are found...

article

Search for dark matter produced in association with a hadronically decaying vector boson in pp collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

Physics Letters B > 2016 > 763 > C > 251-268

A search is presented for dark matter produced in association with a hadronically decaying W or Z boson using 3.2 fb⁻¹ of pp collisions at s=13 TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with a hadronic jet compatible with a W or Z boson and with large missing transverse momentum are analysed. The data are consistent with the Standard Model predictions and are interpreted...

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Search results for: S. De Cecco

Electroluminescence pulse shape and electron diffusion in liquid argon measured in a dual-phase TPC

Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the ℓℓbb final state in pp collisions at s=13 TeV with the ATLAS detector

DarkSide-20k: A 20 tonne two-phase LAr TPC for direct dark matter detection at LNGS

Search for diboson resonances with boson-tagged jets in pp collisions at s=13 TeV with the ATLAS detector

Measurement of the exclusive γγ→μ+μ− process in proton–proton collisions at s=13 TeV with the ATLAS detector

Measurement of differential cross sections of isolated-photon plus heavy-flavour jet production in pp collisions at s=8 TeV using the ATLAS detector

Search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a Z boson in pp collisions at s=13 TeV with the ATLAS detector

Measurement of the cross-section for electroweak production of dijets in association with a Z boson in pp collisions at s=13 TeV with the ATLAS detector

Search for new phenomena in high-mass diphoton final states using 37 fb−1 of proton–proton collisions collected at s=13 TeV with the ATLAS detector

Measurement of jet pT correlations in Pb+Pb and pp collisions at sNN=2.76 TeV with the ATLAS detector

Search for heavy resonances decaying to a W or Z boson and a Higgs boson in the qq¯(′)bb¯ final state in pp collisions at s=13 TeV with the ATLAS detector

ATLAS Collaboration

Measurement of the W+W− production cross section in pp collisions at a centre-of-mass energy of s=13 TeV with the ATLAS experiment

Measurement of the cross section for inclusive isolated-photon production in pp collisions at s=13 TeV using the ATLAS detector

High-ET isolated-photon plus jets production in pp collisions at s=8 TeV with the ATLAS detector

Search for new resonances decaying to a W or Z boson and a Higgs boson in the ℓ+ℓ−bb¯, ℓνbb¯, and νν¯bb¯ channels with pp collisions at s=13 TeV with the ATLAS detector

Measurement of W boson angular distributions in events with high transverse momentum jets at s=8 TeV using the ATLAS detector

Search for dark matter in association with a Higgs boson decaying to b-quarks in pp collisions at s=13 TeV with the ATLAS detector

Search for heavy resonances decaying to a Z boson and a photon in pp collisions at s=13 TeV with the ATLAS detector

Search for dark matter produced in association with a hadronically decaying vector boson in pp collisions at s=13 TeV with the ATLAS detector

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