TY  - JOUR
AU  - Aaboud, M.
AU  - Aad, G.
AU  - Abbott, B.
AU  - Agatonović-Jovin, Tatjana
AU  - Dimitrievska, A.
AU  - Krstic, J.
AU  - Sijacki, Dj.
AU  - Vranjes, N.
AU  - Vranjes Milosavljevic, M.
AU  - Živković, L.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11846
AB  - A search for weakly interacting massive dark-matter particles produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and missing transverse momentum are considered. The analysis uses 36.1fb-1 of proton–proton collision data recorded by the ATLAS experiment at s=13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are interpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour-neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross-section of 300 times the predicted rate for mediators with masses between 10 and 50GeV and assuming a dark-matter mass of 1GeV and unitary coupling. Constraints on colour-charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35GeV, mediator particles with mass below 1.1TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements.
T2  - European Physical Journal C
T1  - Search for dark matter produced in association with bottom or top quarks in √s=13 TeV pp collisions with the ATLAS detector
VL  - 78
IS  - 1
SP  - 18
DO  - 10.1140/epjc/s10052-017-5486-1
ER  - 

@article{
author = "Aaboud, M. and Aad, G. and Abbott, B. and Agatonović-Jovin, Tatjana and Dimitrievska, A. and Krstic, J. and Sijacki, Dj. and Vranjes, N. and Vranjes Milosavljevic, M. and Živković, L.",
year = "2018",
abstract = "A search for weakly interacting massive dark-matter particles produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and missing transverse momentum are considered. The analysis uses 36.1fb-1 of proton–proton collision data recorded by the ATLAS experiment at s=13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are interpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour-neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross-section of 300 times the predicted rate for mediators with masses between 10 and 50GeV and assuming a dark-matter mass of 1GeV and unitary coupling. Constraints on colour-charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35GeV, mediator particles with mass below 1.1TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements.",
journal = "European Physical Journal C",
title = "Search for dark matter produced in association with bottom or top quarks in √s=13 TeV pp collisions with the ATLAS detector",
volume = "78",
number = "1",
pages = "18",
doi = "10.1140/epjc/s10052-017-5486-1"
}

Aaboud, M., Aad, G., Abbott, B., Agatonović-Jovin, T., Dimitrievska, A., Krstic, J., Sijacki, Dj., Vranjes, N., Vranjes Milosavljevic, M.,& Živković, L.. (2018). Search for dark matter produced in association with bottom or top quarks in √s=13 TeV pp collisions with the ATLAS detector. in European Physical Journal C, 78(1), 18.
https://doi.org/10.1140/epjc/s10052-017-5486-1

Aaboud M, Aad G, Abbott B, Agatonović-Jovin T, Dimitrievska A, Krstic J, Sijacki D, Vranjes N, Vranjes Milosavljevic M, Živković L. Search for dark matter produced in association with bottom or top quarks in √s=13 TeV pp collisions with the ATLAS detector. in European Physical Journal C. 2018;78(1):18.
doi:10.1140/epjc/s10052-017-5486-1 .

Aaboud, M., Aad, G., Abbott, B., Agatonović-Jovin, Tatjana, Dimitrievska, A., Krstic, J., Sijacki, Dj., Vranjes, N., Vranjes Milosavljevic, M., Živković, L., "Search for dark matter produced in association with bottom or top quarks in √s=13 TeV pp collisions with the ATLAS detector" in European Physical Journal C, 78, no. 1 (2018):18,
https://doi.org/10.1140/epjc/s10052-017-5486-1 . .

TY  - JOUR
AU  - Aaboud, M.
AU  - Aad, G.
AU  - Abbott, B.
AU  - Agatonović-Jovin, Tatjana
AU  - Dimitrievska, A.
AU  - Krstic, J.
AU  - Sijacki, Dj.
AU  - Simic, L.
AU  - Vranjes, N.
AU  - Vranjes Milosavljevic, M.
AU  - Živković, L.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11827
AB  - A search for supersymmetry involving the pair production of gluinos decaying via third-generation squarks into the lightest neutralino  χ˜10 $$ \left({\tilde{\chi}}_1^0\right) $$ is reported. It uses LHC proton-proton collision data at a centre-of-mass energy  s=13 $$ \sqrt{s}=13 $$ TeV with an integrated luminosity of 36.1 fb−1 collected with the ATLAS detector in 2015 and 2016. The search is performed in events containing large missing transverse momentum and several energetic jets, at least three of which must be identified as originating from b-quarks. To increase the sensitivity, the sample is divided into subsamples based on the presence or absence of electrons or muons. No excess is found above the predicted background. For  χ˜10 $$ {\tilde{\chi}}_1^0 $$ masses below approximately 300 GeV, gluino masses of less than 1.97 (1.92) TeV are excluded at 95% confidence level in simplified models involving the pair production of gluinos that decay via top (bottom) squarks. An interpretation of the limits in terms of the branching ratios of the gluinos into third-generation squarks is also provided. These results improve upon the exclusion limits obtained with the 3.2 fb−1 of data collected in 2015.
T2  - Journal of High Energy Physics
T1  - Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at √s=13 TeV with the ATLAS detector
VL  - 2018
IS  - 6
SP  - 107
DO  - 10.1007/JHEP06(2018)107
ER  - 

@article{
author = "Aaboud, M. and Aad, G. and Abbott, B. and Agatonović-Jovin, Tatjana and Dimitrievska, A. and Krstic, J. and Sijacki, Dj. and Simic, L. and Vranjes, N. and Vranjes Milosavljevic, M. and Živković, L.",
year = "2018",
abstract = "A search for supersymmetry involving the pair production of gluinos decaying via third-generation squarks into the lightest neutralino  χ˜10 $$ \left({\tilde{\chi}}_1^0\right) $$ is reported. It uses LHC proton-proton collision data at a centre-of-mass energy  s=13 $$ \sqrt{s}=13 $$ TeV with an integrated luminosity of 36.1 fb−1 collected with the ATLAS detector in 2015 and 2016. The search is performed in events containing large missing transverse momentum and several energetic jets, at least three of which must be identified as originating from b-quarks. To increase the sensitivity, the sample is divided into subsamples based on the presence or absence of electrons or muons. No excess is found above the predicted background. For  χ˜10 $$ {\tilde{\chi}}_1^0 $$ masses below approximately 300 GeV, gluino masses of less than 1.97 (1.92) TeV are excluded at 95% confidence level in simplified models involving the pair production of gluinos that decay via top (bottom) squarks. An interpretation of the limits in terms of the branching ratios of the gluinos into third-generation squarks is also provided. These results improve upon the exclusion limits obtained with the 3.2 fb−1 of data collected in 2015.",
journal = "Journal of High Energy Physics",
title = "Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at √s=13 TeV with the ATLAS detector",
volume = "2018",
number = "6",
pages = "107",
doi = "10.1007/JHEP06(2018)107"
}

Aaboud, M., Aad, G., Abbott, B., Agatonović-Jovin, T., Dimitrievska, A., Krstic, J., Sijacki, Dj., Simic, L., Vranjes, N., Vranjes Milosavljevic, M.,& Živković, L.. (2018). Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at √s=13 TeV with the ATLAS detector. in Journal of High Energy Physics, 2018(6), 107.
https://doi.org/10.1007/JHEP06(2018)107

Aaboud M, Aad G, Abbott B, Agatonović-Jovin T, Dimitrievska A, Krstic J, Sijacki D, Simic L, Vranjes N, Vranjes Milosavljevic M, Živković L. Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at √s=13 TeV with the ATLAS detector. in Journal of High Energy Physics. 2018;2018(6):107.
doi:10.1007/JHEP06(2018)107 .

Aaboud, M., Aad, G., Abbott, B., Agatonović-Jovin, Tatjana, Dimitrievska, A., Krstic, J., Sijacki, Dj., Simic, L., Vranjes, N., Vranjes Milosavljevic, M., Živković, L., "Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at √s=13 TeV with the ATLAS detector" in Journal of High Energy Physics, 2018, no. 6 (2018):107,
https://doi.org/10.1007/JHEP06(2018)107 . .

TY  - JOUR
AU  - Aaboud, M.
AU  - Aad, G.
AU  - Abbott, B.
AU  - Agatonović-Jovin, Tatjana
AU  - Dimitrievska, A.
AU  - Krstic, J.
AU  - Sijacki, Dj.
AU  - Vranjes, N.
AU  - Vranjes Milosavljevic, M.
AU  - Živković, L.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11825
AB  - A search is performed for new phenomena in events having a photon with high transverse momentum and a jet collected in 36.7fb-1 of proton–proton collisions at a centre-of-mass energy of s = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. The invariant mass distribution of the leading photon and jet is examined to look for the resonant production of new particles or the presence of new high-mass states beyond the Standard Model. No significant deviation from the background-only hypothesis is observed and cross-section limits for generic Gaussian-shaped resonances are extracted. Excited quarks hypothesized in quark compositeness models and high-mass states predicted in quantum black hole models with extra dimensions are also examined in the analysis. The observed data exclude, at 95% confidence level, the mass range below 5.3 TeV for excited quarks and 7.1 TeV (4.4 TeV) for quantum black holes in the Arkani-Hamed–Dimopoulos–Dvali (Randall–Sundrum) model with six (one) extra dimensions.
T2  - European Physical Journal C
T1  - Search for new phenomena in high-mass final states with a photon and a jet from pp collisions at √s = 13 TeV with the ATLAS detector
VL  - 78
IS  - 2
SP  - 102
DO  - 10.1140/epjc/s10052-018-5553-2
ER  - 

@article{
author = "Aaboud, M. and Aad, G. and Abbott, B. and Agatonović-Jovin, Tatjana and Dimitrievska, A. and Krstic, J. and Sijacki, Dj. and Vranjes, N. and Vranjes Milosavljevic, M. and Živković, L.",
year = "2018",
abstract = "A search is performed for new phenomena in events having a photon with high transverse momentum and a jet collected in 36.7fb-1 of proton–proton collisions at a centre-of-mass energy of s = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. The invariant mass distribution of the leading photon and jet is examined to look for the resonant production of new particles or the presence of new high-mass states beyond the Standard Model. No significant deviation from the background-only hypothesis is observed and cross-section limits for generic Gaussian-shaped resonances are extracted. Excited quarks hypothesized in quark compositeness models and high-mass states predicted in quantum black hole models with extra dimensions are also examined in the analysis. The observed data exclude, at 95% confidence level, the mass range below 5.3 TeV for excited quarks and 7.1 TeV (4.4 TeV) for quantum black holes in the Arkani-Hamed–Dimopoulos–Dvali (Randall–Sundrum) model with six (one) extra dimensions.",
journal = "European Physical Journal C",
title = "Search for new phenomena in high-mass final states with a photon and a jet from pp collisions at √s = 13 TeV with the ATLAS detector",
volume = "78",
number = "2",
pages = "102",
doi = "10.1140/epjc/s10052-018-5553-2"
}

Aaboud, M., Aad, G., Abbott, B., Agatonović-Jovin, T., Dimitrievska, A., Krstic, J., Sijacki, Dj., Vranjes, N., Vranjes Milosavljevic, M.,& Živković, L.. (2018). Search for new phenomena in high-mass final states with a photon and a jet from pp collisions at √s = 13 TeV with the ATLAS detector. in European Physical Journal C, 78(2), 102.
https://doi.org/10.1140/epjc/s10052-018-5553-2

Aaboud M, Aad G, Abbott B, Agatonović-Jovin T, Dimitrievska A, Krstic J, Sijacki D, Vranjes N, Vranjes Milosavljevic M, Živković L. Search for new phenomena in high-mass final states with a photon and a jet from pp collisions at √s = 13 TeV with the ATLAS detector. in European Physical Journal C. 2018;78(2):102.
doi:10.1140/epjc/s10052-018-5553-2 .

Aaboud, M., Aad, G., Abbott, B., Agatonović-Jovin, Tatjana, Dimitrievska, A., Krstic, J., Sijacki, Dj., Vranjes, N., Vranjes Milosavljevic, M., Živković, L., "Search for new phenomena in high-mass final states with a photon and a jet from pp collisions at √s = 13 TeV with the ATLAS detector" in European Physical Journal C, 78, no. 2 (2018):102,
https://doi.org/10.1140/epjc/s10052-018-5553-2 . .