Accès ouvert
2015
article
OpenAlex
G. Aad, B. Abbott, Jamal Abdallah, S. Abdel Khalek et autres
A search is performed for top-quark pairs ($t\overline{t}$) produced together with a photon ($\ensuremath{\gamma}$) with transverse energy greater than 20 GeV using a sample of $t\overline{t}$ candidate events in final states with jets, missing transverse momentum, and one isolated electron or muon. …
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Accès ouvert
2015
article
OpenAlex
G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek et autres
Dijet events produced in LHC proton-proton collisions at a center-of-mass energy $\sqrt{s}=8\text{ }\text{ }\mathrm{TeV}$ are studied with the ATLAS detector using the full 2012 data set, with an integrated luminosity of $20.3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. Dijet masses up to about 4.5 TeV are …
fr, se, ch
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Accès ouvert
2015
article
OpenAlex
G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek et autres
This article reports on a search for dark matter pair production in association with bottom or top quarks in [Formula: see text] of [Formula: see text] collisions collected at [Formula: see text] TeV by the ATLAS detector at the LHC. Events with …
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Accès ouvert
2014
article
OpenAlex
G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek et autres
The ATLAS detector at the Large Hadron Collider is used to search for the lepton flavor violating process $Z\ensuremath{\rightarrow}e\ensuremath{\mu}$ in $pp$ collisions using $20.3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data collected at $\sqrt{s}=8\text{ }\text{ }\mathrm{TeV}$. An enhancement in the $e\ensuremath{\mu}$ invariant mass spectrum is …
fr, us, tw, az, nl, ca, il, ch, se, it, pl, de, gb, rs, es, pt, ru, jp, ar, gr, dk, br, sk, tr
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Accès ouvert
2014
article
OpenAlex
G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek et autres
This Letter presents the first study of W(±)W(±)jj, same-electric-charge diboson production in association with two jets, using 20.3 fb(-1) of proton-proton collision data at sqrt[s] = 8 TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with two reconstructed …
fr, us, tw, az, nl, ca, il, ch, se, it, pl, de, gb, rs, es, pt, ru, jp, ar, gr, dk, br, sk, tr
(code pays fourni par la source)
Accès ouvert
2014
article
OpenAlex
G. Aad, T. Abajyan, B. Abbott, J. Abdallah et autres
A measurement of the ${B}_{s}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\phi}$ decay parameters, updated to include flavor tagging is reported using $4.9\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of integrated luminosity collected by the ATLAS detector from $\sqrt{s}=7\text{ }\text{ }\mathrm{TeV}$ $pp$ collisions recorded in 2011 at the LHC. The values measured for …
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Accès ouvert
2014
article
OpenAlex
G. Aad, T. Abajyan, B. Abbott, J. Abdallah et autres
A measurement of the parity-violating decay asymmetry parameter, ${\ensuremath{\alpha}}_{b}$, and the helicity amplitudes for the decay ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}({\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}){\mathrm{\ensuremath{\Lambda}}}^{0}(p{\ensuremath{\pi}}^{\ensuremath{-}})$ is reported. The analysis is based on 1400 ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}$ and ${\overline{\mathrm{\ensuremath{\Lambda}}}}_{b}^{0}$ baryons selected in $4.6\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of proton--proton collision data with a center-of-mass energy …
fr, de, us, tw, az, nl, ca, il, se, it, pl, gb, rs, es, pt, ch, ru, jp, ar, gr, dk, br, sk, tr
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Accès ouvert
2014
article
OpenAlex
G. Aad, T. Abajyan, B. Abbott, J. Abdallah et autres
Using a sample of dilepton top-quark pair ($t\overline{t}$) candidate events, a study is performed of the production of top-quark pairs together with heavy-flavor (HF) quarks, the sum of $t\overline{t}+b+X$ and $t\overline{t}+c+X$, collectively referred to as $t\overline{t}\text{ }+\text{ }\mathrm{HF}$. The data set used …
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Accès ouvert
2012
article
OpenAlex
G. Aad, T. Abajyan, B. Abbott, J. Abdallah et autres
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 …
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Accès ouvert
2012
article
OpenAlex
G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek et autres
Abstract The results of a search for the production of second generation scalar leptoquarks are presented for final states consisting of either two muons and at least two jets or a muon plus missing transverse momentum and at least two jets. A …
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Accès ouvert
2011
article
OpenAlex
G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim et autres
Contains fulltext : 92306.pdf (Publisher’s version ) (Open Access)
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