Search for massive supersymmetric particles decaying to many jets using the ATLAS detector in pp collisions at root s=8 TeV

Results of a search for decays of massive particles to fully hadronic final states are presented. This search uses 20.3 fb(-1) of data collected by the ATLAS detector in root s = 8 TeV proton-proton collisions at the LHC. Signatures based on high jet multiplicities without requirements on the missing transverse momentum are used to search for R-parity-violating supersymmetric gluino pair production with subsequent decays to quarks. The analysis is performed using a requirement on the number of jets, in combination with separate requirements on the number of b-tagged jets, as well as a topological observable formed from the scalar sum of the mass values of large-radius jets in the event. Results are interpreted in the context of all possible branching ratios of direct gluino decays to various quark flavors. No significant deviation is observed from the expected Standard Model backgrounds estimated using jet counting as well as data-driven templates of the total-jet-mass spectra. Gluino ...

Source:
Physical Review D, 2015, 91, 11

Funding / projects:

ANPCyT, Argentina, YerPhI, Armenia, ARC, Australia, BMWFW, Austria, FWF, Austria, ANAS, Azerbaijan, SSTC, Belarus, CNPq, Brazil, FAPESP, Brazil, NSERC, Canada, NRC, Canada, CFI, Canada, CERN, CONICYT, Chile, CAS, China, MOST, China, NSFC, China, COLCIENCIAS, Colombia, MSMT CR, Czech Republic, MPO CR, Czech Republic, VSC CR, Czech Republic, DNRF, Denmark, DNSRC, Denmark, Lundbeck Foundation, Denmark, EPLANET, European Union, ERC, European Union, European Union Seventh Framework ProgrammeNSRF, European Union, IN2P3-CNRS, France, CEA-DSM/IRFU, France, GNSF, Georgia, BMBF, Germany, DFG, Germany, HGF, Germany, MPG, Germany, AvH Foundation, Germany, GSRT, greece, NSRF, Greece, RGC, China, Hong Kong SAR, China, ISF, Israel, MINERVA, Israel, GIF, Israel, I-CORE, Israel, Benoziyo Center, Israel, INFN, Italy, MEXT, Japan, JSPS, Japan, CNRST, Morocco, FOM, Netherlands, NWO, Netherlands, BRF, Norway, RCN, Norway, MNiSW, Poland, NCN, Poland, GRICES, Portugal, FCT, Portugal, MNE/IFA, Romania, MES of Russia, Russian Federation, ROSATOM, Russian Federation, JINR, MSTD, Serbia, MSSR, Slovakia, ARRS, Slovenia, MIZS, Slovenia, DST/NRF, South Africa, MINECO, Spain, SRC, Sweden, Wallenberg Foundation, Sweden, SER, Switzerland, SNSF, Switzerland, Cantons of Bern and Geneva, Switzerland, NSC, Taiwan, TAEK, Turkey, STFC, U.K., Royal Society, U.K., DOE, U.S, NSF, U.S, Leverhulme Trust, U.K., ICREA

DOI: 10.1103/PhysRevD.91.112016

ISSN: 2470-0010; 2470-0029

WoS: 000357026400001

Scopus: 2-s2.0-84935422989

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TY - JOUR
AU - Aad, G.
AU - Agatonović-Jovin, Tatjana
AU - Bozic, I.
AU - Dimitrievska, A.
AU - Krstić, Jelena
AU - Mamužić, Judita
AU - Marjanović, M.
AU - Popović, D. S.
AU - Sijacki, Dj.
AU - Simić, Lj.
AU - Vranješ, Nenad
AU - Vranješ Milosavljević, Marija
AU - Živković, Lada
PY - 2015
UR - https://vinar.vin.bg.ac.rs/handle/123456789/633
AB - Results of a search for decays of massive particles to fully hadronic final states are presented. This search uses 20.3 fb(-1) of data collected by the ATLAS detector in root s = 8 TeV proton-proton collisions at the LHC. Signatures based on high jet multiplicities without requirements on the missing transverse momentum are used to search for R-parity-violating supersymmetric gluino pair production with subsequent decays to quarks. The analysis is performed using a requirement on the number of jets, in combination with separate requirements on the number of b-tagged jets, as well as a topological observable formed from the scalar sum of the mass values of large-radius jets in the event. Results are interpreted in the context of all possible branching ratios of direct gluino decays to various quark flavors. No significant deviation is observed from the expected Standard Model backgrounds estimated using jet counting as well as data-driven templates of the total-jet-mass spectra. Gluino pair decays to ten or more quarks via intermediate neutralinos are excluded for a gluino with mass m((g) over tilde) LT 1 TeV for a neutralino mass m( LT (chi)over tilde GT 10) = 500 GeV. Direct gluino decays to six quarks are excluded for m((g) over tilde) LT 917 GeV for light-flavor final states, and results for various flavor hypotheses are presented.
T2 - Physical Review D
T1 - Search for massive supersymmetric particles decaying to many jets using the ATLAS detector in pp collisions at root s=8 TeV
VL - 91
IS - 11
DO - 10.1103/PhysRevD.91.112016
ER -

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Bozic, I. and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanović, M. and Popović, D. S. and Sijacki, Dj. and Simić, Lj. and Vranješ, Nenad and Vranješ Milosavljević, Marija and Živković, Lada",
year = "2015",
abstract = "Results of a search for decays of massive particles to fully hadronic final states are presented. This search uses 20.3 fb(-1) of data collected by the ATLAS detector in root s = 8 TeV proton-proton collisions at the LHC. Signatures based on high jet multiplicities without requirements on the missing transverse momentum are used to search for R-parity-violating supersymmetric gluino pair production with subsequent decays to quarks. The analysis is performed using a requirement on the number of jets, in combination with separate requirements on the number of b-tagged jets, as well as a topological observable formed from the scalar sum of the mass values of large-radius jets in the event. Results are interpreted in the context of all possible branching ratios of direct gluino decays to various quark flavors. No significant deviation is observed from the expected Standard Model backgrounds estimated using jet counting as well as data-driven templates of the total-jet-mass spectra. Gluino pair decays to ten or more quarks via intermediate neutralinos are excluded for a gluino with mass m((g) over tilde) LT 1 TeV for a neutralino mass m( LT (chi)over tilde GT 10) = 500 GeV. Direct gluino decays to six quarks are excluded for m((g) over tilde) LT 917 GeV for light-flavor final states, and results for various flavor hypotheses are presented.",
journal = "Physical Review D",
title = "Search for massive supersymmetric particles decaying to many jets using the ATLAS detector in pp collisions at root s=8 TeV",
volume = "91",
number = "11",
doi = "10.1103/PhysRevD.91.112016"
}

Aad, G., Agatonović-Jovin, T., Bozic, I., Dimitrievska, A., Krstić, J., Mamužić, J., Marjanović, M., Popović, D. S., Sijacki, Dj., Simić, Lj., Vranješ, N., Vranješ Milosavljević, M.,& Živković, L.. (2015). Search for massive supersymmetric particles decaying to many jets using the ATLAS detector in pp collisions at root s=8 TeV. in Physical Review D, 91(11).
https://doi.org/10.1103/PhysRevD.91.112016

Aad G, Agatonović-Jovin T, Bozic I, Dimitrievska A, Krstić J, Mamužić J, Marjanović M, Popović DS, Sijacki D, Simić L, Vranješ N, Vranješ Milosavljević M, Živković L. Search for massive supersymmetric particles decaying to many jets using the ATLAS detector in pp collisions at root s=8 TeV. in Physical Review D. 2015;91(11).
doi:10.1103/PhysRevD.91.112016 .

Aad, G., Agatonović-Jovin, Tatjana, Bozic, I., Dimitrievska, A., Krstić, Jelena, Mamužić, Judita, Marjanović, M., Popović, D. S., Sijacki, Dj., Simić, Lj., Vranješ, Nenad, Vranješ Milosavljević, Marija, Živković, Lada, "Search for massive supersymmetric particles decaying to many jets using the ATLAS detector in pp collisions at root s=8 TeV" in Physical Review D, 91, no. 11 (2015),
https://doi.org/10.1103/PhysRevD.91.112016 . .