TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Ekmedžić, Marko
AU  - Milošević, Jovan
AU  - Reković, Vladimir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/604
AB  - A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5 fb(-1) collected by the CMS experiment at the LHC in pp collisions at a centre-of-mass energy of 8 TeV. In order to separate the signal from the larger t (t) over bar + jets background, this analysis uses a matrix element method that assigns a probability density value to each reconstructed event under signal or background hypotheses. The ratio between the two values is used in a maximum likelihood fit to extract the signal yield. The results are presented in terms of the measured signal strength modifier, mu, relative to the standard model prediction for a Higgs boson mass of 125 GeV. The observed (expected) exclusion limit at a 95% confidence level is mu LT 4.2 (3.3), corresponding to a best fit value LT (mu)over cap GT = 1.2(-1.5)(+1.6).
T2  - European Physical Journal C. Particles and Fields
T1  - Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method
VL  - 75
IS  - 6
DO  - 10.1140/epjc/s10052-015-3454-1
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2015",
abstract = "A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5 fb(-1) collected by the CMS experiment at the LHC in pp collisions at a centre-of-mass energy of 8 TeV. In order to separate the signal from the larger t (t) over bar + jets background, this analysis uses a matrix element method that assigns a probability density value to each reconstructed event under signal or background hypotheses. The ratio between the two values is used in a maximum likelihood fit to extract the signal yield. The results are presented in terms of the measured signal strength modifier, mu, relative to the standard model prediction for a Higgs boson mass of 125 GeV. The observed (expected) exclusion limit at a 95% confidence level is mu LT 4.2 (3.3), corresponding to a best fit value LT (mu)over cap GT = 1.2(-1.5)(+1.6).",
journal = "European Physical Journal C. Particles and Fields",
title = "Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method",
volume = "75",
number = "6",
doi = "10.1140/epjc/s10052-015-3454-1"
}

Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2015). Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method. in European Physical Journal C. Particles and Fields, 75(6).
https://doi.org/10.1140/epjc/s10052-015-3454-1

Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method. in European Physical Journal C. Particles and Fields. 2015;75(6).
doi:10.1140/epjc/s10052-015-3454-1 .

Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method" in European Physical Journal C. Particles and Fields, 75, no. 6 (2015),
https://doi.org/10.1140/epjc/s10052-015-3454-1 . .