Search results for: M. Hirose

Items from 1 to 20 out of 698 results

article

Measurement of the inclusive jet cross-sections in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2017 > 2017 > 9 > 1-54

Abstract Inclusive jet production cross-sections are measured in proton-proton collisions at a centre-of-mass energy of s = 8 $$ \sqrt{s}=8 $$ TeV recorded by the ATLAS experiment at the Large Hadron Collider at CERN. The total integrated luminosity of the analysed data set amounts to 20.2 fb⁻¹. Double-differential cross-sections are measured for jets defined by the anti-k_t jet clustering...

article

Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector

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

The European Physical Journal C > 2017 > 77 > 9 > 1-32

The rejection of forward jets originating from additional proton–proton interactions (pile-up) is crucial for a variety of physics analyses at the LHC, including Standard Model measurements and searches for physics beyond the Standard Model. The identification of such jets is challenging due to the lack of track and vertex information in the pseudorapidity range $$|\eta |>2.5$$ | η | >...

article

Erratum to: Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at $$\sqrt{s}=8$$ s = 8 TeV with the ATLAS detector

Atlas Collaboration, G. Aad, B. Abbott, J. Abdallah, more

The European Physical Journal C > 2017 > 77 > 8 > 1-15

The online version of the original article can be found under doi: 10.1140/epjc/s10052-016-3910-6 .

article

Measurement of $$WW/WZ \rightarrow \ell \nu q q^{\prime }$$ W W / W Z → ℓ ν q q ′ production with the hadronically decaying boson reconstructed as one or two jets in pp collisions at $$\sqrt{s} =8~\text {TeV}$$ s = 8 TeV with ATLAS, and constraints on anomalous gauge couplings

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

The European Physical Journal C > 2017 > 77 > 8 > 1-31

This paper presents a study of the production of WW or WZ boson pairs, with one W boson decaying to $$e\nu $$ e ν or $$\mu \nu $$ μ ν and one W or Z boson decaying hadronically. The analysis uses $$20.2~\text{ fb }^{-1}$$ 20.2 fb - 1 of $$\sqrt{s} =8~\text {TeV}$$ s = 8 TeV pp collision data, collected by the ATLAS detector at the Large Hadron...

article

Search for pair production of vector-like top quarks in events with one lepton, jets, and missing transverse momentum in s = 13 $$ \sqrt{s}=13 $$ TeV pp collisions with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2017 > 2017 > 8 > 1-40

Abstract The results of a search for vector-like top quarks using events with exactly one lepton, at least four jets, and large missing transverse momentum are reported. The search is optimised for pair production of vector-like top quarks in the Z(→νν) t + X decay channel. LHC pp collision data at a centre-of-mass energy of s = 13 $$ \sqrt{s}=13 $$ TeV recorded by the ATLAS detector in...

article

Fiducial, total and differential cross-section measurements of t-channel single top-quark production in pp collisions at 8 TeV using data collected by the ATLAS detector

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

The European Physical Journal C > 2017 > 77 > 8 > 1-46

Detailed measurements of t-channel single top-quark production are presented. They use 20.2 fb $$^{-1}$$ - 1 of data collected by the ATLAS experiment in proton–proton collisions at a centre-of-mass energy of 8 TeV at the LHC. Total, fiducial and differential cross-sections are measured for both top-quark and top-antiquark production. The fiducial cross-section is measured with a precision...

article

Measurement of the k_t splitting scales in Z → ℓℓ events in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2017 > 2017 > 8 > 1-41

Abstract A measurement of the splitting scales occuring in the k_t jet-clustering algorithm is presented for final states containing a Z boson. The measurement is done using 20.2 fb⁻¹ of proton-proton collision data collected at a centre-of-mass energy of s = 8 $$ \sqrt{s}=8 $$ TeV by the ATLAS experiment at the LHC in 2012. The measurement is based on chargedparticle track information,...

article

Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in s = 13 $$ \sqrt{s}=13 $$ TeV pp collisions with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2017 > 2017 > 8 > 1-46

Abstract A search for direct top squark pair production resulting in events with either a same-flavour opposite-sign dilepton pair with invariant mass compatible with a Z boson or a pair of jets compatible with a Standard Model (SM) Higgs boson (h) is presented. Requirements on the missing transverse momentum, together with additional selections on leptons, jets, jets identified as originating from...

article

Topological cell clustering in the ATLAS calorimeters and its performance in LHC Run 1

G. Aad, B. Abbott, J. Abdallah, O. Abdinov, more

The European Physical Journal C > 2017 > 77 > 7 > 1-73

The reconstruction of the signal from hadrons and jets emerging from the proton–proton collisions at the Large Hadron Collider (LHC) and entering the ATLAS calorimeters is based on a three-dimensional topological clustering of individual calorimeter cell signals. The cluster formation follows cell signal-significance patterns generated by electromagnetic and hadronic showers. In this, the clustering...

article

Studies of Zγ production in association with a high-mass dijet system in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2017 > 2017 > 7 > 1-47

Abstract The production of a Z boson and a photon in association with a high-mass dijet system is studied using 20.2 fb⁻¹ of proton-proton collision data at a centre-of-mass energy of s = 8 $$ \sqrt{s}=8 $$ TeV recorded with the ATLAS detector in 2012 at the Large Hadron Collider. Final states with a photon and a Z boson decaying into a pair of either electrons, muons, or neutrinos are...

article

Measurements of electroweak $$Wjj $$ W j j production and constraints on anomalous gauge couplings with the ATLAS detector

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

The European Physical Journal C > 2017 > 77 > 7 > 1-74

Measurements of the electroweak production of a W boson in association with two jets at high dijet invariant mass are performed using $$\sqrt{s} =$$ s = 7 and 8 $$\text {TeV}$$ TeV proton–proton collision data produced by the Large Hadron Collider, corresponding respectively to 4.7 and 20.2 fb $$^{-1}$$ - 1 of integrated luminosity collected by the ATLAS detector...

article

Jet reconstruction and performance using particle flow with the ATLAS Detector

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

The European Physical Journal C > 2017 > 77 > 7 > 1-47

This paper describes the implementation and performance of a particle flow algorithm applied to 20.2 fb $$^{-1}$$ - 1 of ATLAS data from 8 TeV proton–proton collisions in Run 1 of the LHC. The algorithm removes calorimeter energy deposits due to charged hadrons from consideration during jet reconstruction, instead using measurements of their momenta from the inner tracker. This improves...

article

Measurement of multi-particle azimuthal correlations in pp, p + Pb and low-multiplicity Pb + Pb collisions with the ATLAS detector

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

The European Physical Journal C > 2017 > 77 > 6 > 1-40

Multi-particle cumulants and corresponding Fourier harmonics are measured for azimuthal angle distributions of charged particles in $$pp$$ p p collisions at $$\sqrt{s}$$ s = 5.02 and 13 TeV and in $$p$$ p + Pb collisions at $$\sqrt{s_{_\text {NN}}}$$ s NN = 5.02 TeV, and compared to the results obtained for low-multiplicity $$\mathrm{Pb}~+~\mathrm{Pb}$$...

article

Search for dark matter at $$\sqrt{s}=13~\mathrm{TeV}$$ s = 13 TeV in final states containing an energetic photon and large missing transverse momentum with the ATLAS detector

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

The European Physical Journal C > 2017 > 77 > 6 > 1-30

Results of a search for physics beyond the Standard Model in events containing an energetic photon and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider are reported. As the number of events observed in data, corresponding to an integrated luminosity of 36.1 fb $$^{-1}$$ - 1 of proton–proton collisions at a centre-of-mass energy of $$13~\mathrm{TeV}$$...

article

Measurement of jet fragmentation in Pb+Pb and pp collisions at $$\sqrt{{s_\mathrm{NN}}} = 2.76$$ s NN = 2.76 TeV with the ATLAS detector at the LHC

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

The European Physical Journal C > 2017 > 77 > 6 > 1-29

The distributions of transverse momentum and longitudinal momentum fraction of charged particles in jets are measured in Pb+Pb and pp collisions with the ATLAS detector at the LHC. The distributions are measured as a function of jet transverse momentum and rapidity. The analysis utilises an integrated luminosity of 0.14 nb $$^{-1}$$ - 1 of Pb+Pb data and 4.0 pb $$^{-1}$$ - 1 ...

article

Precision measurement and interpretation of inclusive $$W^+$$ W + , $$W^-$$ W - and $$Z/\gamma ^*$$ Z / γ ∗ production cross sections with the ATLAS detector

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

The European Physical Journal C > 2017 > 77 > 6 > 1-62

High-precision measurements by the ATLAS Collaboration are presented of inclusive $$W^+ \rightarrow \ell ^+\nu $$ W + → ℓ + ν , $$W^- \rightarrow \ell ^-\bar{\nu }$$ W - → ℓ - ν ¯ and $$Z/\gamma ^* \rightarrow \ell \ell $$ Z / γ ∗ → ℓ ℓ ( $$\ell =e,\mu $$ ℓ = e , μ ) Drell–Yan production cross sections at the LHC. The data were collected in...

article

Measurements of the production cross section of a $$Z$$ Z boson in association with jets in pp collisions at $$\sqrt{s} = 13$$ s = 13 TeV with the ATLAS detector

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

The European Physical Journal C > 2017 > 77 > 6 > 1-31

Measurements of the production cross section of a $$Z$$ Z boson in association with jets in proton–proton collisions at $$\sqrt{s} = 13$$ s = 13 TeV are presented, using data corresponding to an integrated luminosity of 3.16 fb $$^{-1}$$ - 1 collected by the ATLAS experiment at the CERN Large Hadron Collider in 2015. Inclusive and differential cross sections are...

article

Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC

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

The European Physical Journal C > 2017 > 77 > 5 > 1-35

This paper presents the method and performance of primary vertex reconstruction in proton–proton collision data recorded by the ATLAS experiment during Run 1 of the LHC. The studies presented focus on data taken during 2012 at a centre-of-mass energy of $$\sqrt{s} = 8$$ s = 8 TeV. The performance has been measured as a function of the number of interactions per bunch crossing over a wide...

article

Performance of the ATLAS trigger system in 2015

Atlas Collaboration, M. Aaboud, G. Aad, B. Abbott, more

The European Physical Journal C > 2017 > 77 > 5 > 1-53

During 2015 the ATLAS experiment recorded $$3.8\,{\mathrm{fb}}^{-1}$$ 3.8 fb - 1 of proton–proton collision data at a centre-of-mass energy of $$13\,{\mathrm{TeV}}$$ 13 TeV . The ATLAS trigger system is a crucial component of the experiment, responsible for selecting events of interest at a recording rate of approximately 1 kHz from up to 40 MHz of collisions. This paper...

article

Measurements of top-quark pair differential cross-sections in the $$e\mu $$ e μ channel in pp collisions at $$\sqrt{s} = 13$$ s = 13 TeV using the ATLAS detector

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

The European Physical Journal C > 2017 > 77 > 5 > 1-30

This article presents measurements of $$t\bar{t}$$ t t ¯ differential cross-sections in a fiducial phase-space region, using an integrated luminosity of 3.2 fb $$^{-1}$$ - 1 of proton–proton data at a centre-of-mass energy of $$\sqrt{s} = 13$$ s = 13 TeV recorded by the ATLAS experiment at the LHC in 2015. Differential cross-sections are measured as a function...

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Search results for: M. Hirose

Measurement of the inclusive jet cross-sections in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector

Erratum to: Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at $$\sqrt{s}=8$$ s = 8 TeV with the ATLAS detector

Measurement of $$WW/WZ \rightarrow \ell \nu q q^{\prime }$$ W W / W Z → ℓ ν q q ′ production with the hadronically decaying boson reconstructed as one or two jets in pp collisions at $$\sqrt{s} =8~\text {TeV}$$ s = 8 TeV with ATLAS, and constraints on anomalous gauge couplings

Search for pair production of vector-like top quarks in events with one lepton, jets, and missing transverse momentum in s = 13 $$ \sqrt{s}=13 $$ TeV pp collisions with the ATLAS detector

Fiducial, total and differential cross-section measurements of t-channel single top-quark production in pp collisions at 8 TeV using data collected by the ATLAS detector

Measurement of the k_t splitting scales in Z → ℓℓ events in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in s = 13 $$ \sqrt{s}=13 $$ TeV pp collisions with the ATLAS detector

Topological cell clustering in the ATLAS calorimeters and its performance in LHC Run 1

Studies of Zγ production in association with a high-mass dijet system in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

Measurements of electroweak $$Wjj $$ W j j production and constraints on anomalous gauge couplings with the ATLAS detector

Jet reconstruction and performance using particle flow with the ATLAS Detector

Measurement of multi-particle azimuthal correlations in pp, p + Pb and low-multiplicity Pb + Pb collisions with the ATLAS detector

Search for dark matter at $$\sqrt{s}=13~\mathrm{TeV}$$ s = 13 TeV in final states containing an energetic photon and large missing transverse momentum with the ATLAS detector

Measurement of jet fragmentation in Pb+Pb and pp collisions at $$\sqrt{{s_\mathrm{NN}}} = 2.76$$ s NN = 2.76 TeV with the ATLAS detector at the LHC

Precision measurement and interpretation of inclusive $$W^+$$ W + , $$W^-$$ W - and $$Z/\gamma ^*$$ Z / γ ∗ production cross sections with the ATLAS detector

Measurements of the production cross section of a $$Z$$ Z boson in association with jets in pp collisions at $$\sqrt{s} = 13$$ s = 13 TeV with the ATLAS detector

Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC

Performance of the ATLAS trigger system in 2015

Measurements of top-quark pair differential cross-sections in the $$e\mu $$ e μ channel in pp collisions at $$\sqrt{s} = 13$$ s = 13 TeV using the ATLAS detector

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