1. |
- Kanai, M, et al.
(author)
-
- 2023
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swepub:Mat__t
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2. |
- Niemi, MEK, et al.
(author)
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- 2021
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swepub:Mat__t
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3. |
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4. |
- Aad, G, et al.
(author)
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- 2015
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swepub:Mat__t
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5. |
- Aad, G, et al.
(author)
-
Measurements of fiducial cross-sections for [Formula: see text] production with one or two additional b-jets in pp collisions at [Formula: see text]=8 TeV using the ATLAS detector.
- 2016
-
In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 76
-
Journal article (peer-reviewed)abstract
- Fiducial cross-sections for [Formula: see text] production with one or two additional b-jets are reported, using an integrated luminosity of 20.3 fb[Formula: see text] of proton-proton collisions at a centre-of-mass energy of 8 TeV at the Large Hadron Collider, collected with the ATLAS detector. The cross-section times branching ratio for [Formula: see text] events with at least one additional b-jet is measured to be 950 [Formula: see text] 70 (stat.) [Formula: see text] (syst.) fb in the lepton-plus-jets channel and 50 [Formula: see text] 10 (stat.) [Formula: see text] (syst.) fb in the [Formula: see text] channel. The cross-section times branching ratio for events with at least two additional b-jets is measured to be 19.3 [Formula: see text] 3.5 (stat.) [Formula: see text] 5.7 (syst.) fb in the dilepton channel ([Formula: see text], [Formula: see text], and ee) using a method based on tight selection criteria, and 13.5 [Formula: see text] 3.3 (stat.) [Formula: see text] 3.6 (syst.) fb using a looser selection that allows the background normalisation to be extracted from data. The latter method also measures a value of 1.30 [Formula: see text] 0.33 (stat.) [Formula: see text] 0.28 (syst.)% for the ratio of [Formula: see text] production with two additional b-jets to [Formula: see text] production with any two additional jets. All measurements are in good agreement with recent theory predictions.
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6. |
- Aad, G, et al.
(author)
-
Searches for scalar leptoquarks in pp collisions at [Formula: see text] = 8 TeV with the ATLAS detector.
- 2016
-
In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 76
-
Journal article (peer-reviewed)abstract
- Searches for pair-produced scalar leptoquarks are performed using 20 fb[Formula: see text] of proton-proton collision data provided by the LHC and recorded by the ATLAS detector at [Formula: see text] TeV. Events with two electrons (muons) and two or more jets in the final state are used to search for first (second)-generation leptoquarks. The results from two previously published ATLAS analyses are interpreted in terms of third-generation leptoquarks decaying to [Formula: see text] and [Formula: see text] final states. No statistically significant excess above the Standard Model expectation is observed in any channel and scalar leptoquarks are excluded at 95 % CL with masses up to [Formula: see text] 1050 GeV for first-generation leptoquarks, [Formula: see text] 1000 GeV for second-generation leptoquarks, [Formula: see text] 625 GeV for third-generation leptoquarks in the [Formula: see text] channel, and 200 [Formula: see text] 640 GeV in the [Formula: see text] channel.
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7. |
- Aad, G., et al.
(author)
-
- 2016
-
In: Journal of High Energy Physics. - : Springer. - 1029-8479 .- 1126-6708. ; :1
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Journal article (peer-reviewed)
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8. |
- Aad, G., et al.
(author)
-
- 2015
-
In: Physical Review D. Particles and fields. - : American Physics Society. - 0556-2821 .- 1089-4918. ; 92:11
-
Journal article (peer-reviewed)
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9. |
- Aad, G., et al.
(author)
-
- 2015
-
In: Journal of High Energy Physics. - : Springer. - 1029-8479 .- 1126-6708. ; :12
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Journal article (peer-reviewed)
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10. |
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11. |
- Aad, G, et al.
(author)
-
Search for Higgs Boson Pair Production in the γγbb[over ¯] Final State Using pp Collision Data at sqrt[s]=8 TeV from the ATLAS Detector.
- 2015
-
In: Physical Review Letters. - 1079-7114. ; 114:8
-
Journal article (peer-reviewed)abstract
- Searches are performed for resonant and nonresonant Higgs boson pair production in the γγbb[over ¯] final state using 20 fb^{-1} of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross section times branching ratio of nonresonant production is set at 2.2 pb, while the expected limit is 1.0 pb. The difference derives from a modest excess of events, corresponding to 2.4 standard deviations from the background-only hypothesis. The limit observed in the search for a narrow X→hh resonance ranges between 0.7 and 3.5 pb as a function of the resonance mass.
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12. |
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13. |
- Aad, G., et al.
(author)
-
- 2015
-
In: Physical Review D. Particles and fields. - : American Physical Society. - 0556-2821 .- 1089-4918. ; 92:9
-
Journal article (peer-reviewed)
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14. |
- Aad, G., et al.
(author)
-
- 2016
-
In: Physical Review D. Particles and fields. - : American Physical Society. - 0556-2821 .- 1089-4918. ; 93:1
-
Journal article (peer-reviewed)
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15. |
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16. |
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17. |
- Aad, G., et al.
(author)
-
- 2014
-
In: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 112:9
-
Journal article (peer-reviewed)
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18. |
- Aad, G., et al.
(author)
-
- 2015
-
In: Journal of High Energy Physics. - : Springer. - 1029-8479 .- 1126-6708. ; :11
-
Journal article (peer-reviewed)
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19. |
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20. |
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21. |
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22. |
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23. |
- Aad, G., et al.
(author)
-
- 2014
-
In: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 112:20
-
Journal article (peer-reviewed)
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24. |
- Aad, G., et al.
(author)
-
- 2010
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swepub:Mat__t
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25. |
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26. |
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27. |
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28. |
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29. |
- Aad, G, et al.
(author)
-
Measurements of the Higgs boson production and decay rates and coupling strengths using pp collision data at [Formula: see text] and 8 TeV in the ATLAS experiment.
- 2016
-
In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 76
-
Journal article (peer-reviewed)abstract
- Combined analyses of the Higgs boson production and decay rates as well as its coupling strengths to vector bosons and fermions are presented. The combinations include the results of the analyses of the [Formula: see text] and [Formula: see text] decay modes, and the constraints on the associated production with a pair of top quarks and on the off-shell coupling strengths of the Higgs boson. The results are based on the LHC proton-proton collision datasets, with integrated luminosities of up to 4.7 [Formula: see text] at [Formula: see text] TeV and 20.3 [Formula: see text] at [Formula: see text] TeV, recorded by the ATLAS detector in 2011 and 2012. Combining all production modes and decay channels, the measured signal yield, normalised to the Standard Model expectation, is [Formula: see text]. The observed Higgs boson production and decay rates are interpreted in a leading-order coupling framework, exploring a wide range of benchmark coupling models both with and without assumptions on the Higgs boson width and on the Standard Model particle content in loop processes. The data are found to be compatible with the Standard Model expectations for a Higgs boson at a mass of 125.36 GeV for all models considered.
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30. |
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31. |
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32. |
- Aad, G, et al.
(author)
-
Search for a new resonance decaying to a W or Z boson and a Higgs boson in the [Formula: see text] final states with the ATLAS detector.
- 2015
-
In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 75:6
-
Journal article (peer-reviewed)abstract
- A search for a new resonance decaying to a W or Z boson and a Higgs boson in the [Formula: see text] final states is performed using 20.3 fb[Formula: see text] of pp collision data recorded at [Formula: see text] 8 TeV with the ATLAS detector at the Large Hadron Collider. The search is conducted by examining the WH / ZH invariant mass distribution for a localized excess. No significant deviation from the Standard Model background prediction is observed. The results are interpreted in terms of constraints on the Minimal Walking Technicolor model and on a simplified approach based on a phenomenological Lagrangian of Heavy Vector Triplets.
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33. |
- Aad, G, et al.
(author)
-
Search for heavy long-lived multi-charged particles in pp collisions at [Formula: see text] TeV using the ATLAS detector.
- 2015
-
In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 75:8
-
Journal article (peer-reviewed)abstract
- A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2012 at [Formula: see text] TeV from pp collisions corresponding to an integrated luminosity of 20.3 fb[Formula: see text]are examined. Particles producing anomalously high ionisation, consistent with long-lived massive particles with electric charges from [Formula: see text] to [Formula: see text] are searched for. No signal candidate events are observed, and 95 % confidence level cross-section upper limits are interpreted as lower mass limits for a Drell-Yan production model. The mass limits range between 660 and 785 GeV.
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34. |
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35. |
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36. |
- Aad, G, et al.
(author)
-
Study of the [Formula: see text] and [Formula: see text] decays with the ATLAS detector.
- 2016
-
In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 76
-
Journal article (peer-reviewed)abstract
- The decays [Formula: see text] and [Formula: see text] are studied with the ATLAS detector at the LHC using a dataset corresponding to integrated luminosities of 4.9 and 20.6 fb[Formula: see text] of pp collisions collected at centre-of-mass energies [Formula: see text] TeV and 8 TeV, respectively. Signal candidates are identified through [Formula: see text] and [Formula: see text] decays. With a two-dimensional likelihood fit involving the [Formula: see text] reconstructed invariant mass and an angle between the [Formula: see text] and [Formula: see text] candidate momenta in the muon pair rest frame, the yields of [Formula: see text] and [Formula: see text], and the transverse polarisation fraction in [Formula: see text] decay are measured. The transverse polarisation fraction is determined to be [Formula: see text], and the derived ratio of the branching fractions of the two modes is [Formula: see text], where the first error is statistical and the second is systematic. Finally, a sample of [Formula: see text] decays is used to derive the ratios of branching fractions [Formula: see text] and [Formula: see text], where the third error corresponds to the uncertainty of the branching fraction of [Formula: see text] decay. The available theoretical predictions are generally consistent with the measurement.
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37. |
- Aad, G., et al.
(author)
-
- 2014
-
In: The European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6052. ; 74:8
-
Journal article (peer-reviewed)
|
|
38. |
- Aad, G., et al.
(author)
-
- 2015
-
Journal article (peer-reviewed)
|
|
39. |
- Aad, G., et al.
(author)
-
- 2014
-
In: The European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6052. ; 74:6
-
Journal article (peer-reviewed)
|
|
40. |
- Aad, G., et al.
(author)
-
- 2014
-
Journal article (peer-reviewed)
|
|
41. |
- Aad, G., et al.
(author)
-
- 2014
-
In: The European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6052. ; 74:10
-
Journal article (peer-reviewed)
|
|
42. |
- Aad, G., et al.
(author)
-
- 2014
-
Journal article (peer-reviewed)
|
|
43. |
- Aad, G., et al.
(author)
-
- 2011
-
swepub:Mat__t
|
|
44. |
- Aad, G., et al.
(author)
-
- 2014
-
Journal article (peer-reviewed)
|
|
45. |
- Aad, G., et al.
(author)
-
- 2014
-
In: Journal of High Energy Physics. - 1029-8479 .- 1126-6708. ; :9
-
Journal article (peer-reviewed)
|
|
46. |
- Aad, G., et al.
(author)
-
- 2014
-
In: Journal of High Energy Physics. - 1029-8479 .- 1126-6708. ; :5
-
Journal article (peer-reviewed)
|
|
47. |
- Aad, G., et al.
(author)
-
- 2014
-
In: Journal of High Energy Physics. - 1029-8479 .- 1126-6708. ; :10
-
Journal article (peer-reviewed)
|
|
48. |
- Aad, G., et al.
(author)
-
- 2014
-
In: Physical Review D. Particles and fields. - 0556-2821 .- 1089-4918. ; 90:11, s. 112006-
-
Journal article (peer-reviewed)
|
|
49. |
- Aad, G., et al.
(author)
-
- 2014
-
In: Journal of High Energy Physics. - 1029-8479 .- 1126-6708. ; :8
-
Journal article (peer-reviewed)
|
|
50. |
- Aad, G., et al.
(author)
-
- 2014
-
Journal article (peer-reviewed)
|
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