TY  - CONF
AU  - Božović Jelisavčić, Ivanka
AU  - Vukašinović, Nataša
AU  - Kačarević, Goran
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13125
AB  - Although the studies of tensor structure of the Higgs boson interactions with vector bosons and fermions at CMS and ATLAS experiments have established that the JPCquantum numbers of the Higgs boson should be 0++, small CP violation in the Higgs sector (i.e. = 10% contribution of the CP-odd state) cannot be excluded with the current experimental precision. We review a possibility to measure the CP violating mixing angle between scalar and pseudoscalar states of the extended Higgs sector, at 1 TeV ILC with the ILD detector.
C3  - Proceedings of Science
T1  - Probing CPV mixing in the Higgs sector in VBF at 1 TeV ILC
VL  - 449
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13125
ER  - 

@conference{
author = "Božović Jelisavčić, Ivanka and Vukašinović, Nataša and Kačarević, Goran",
year = "2024",
abstract = "Although the studies of tensor structure of the Higgs boson interactions with vector bosons and fermions at CMS and ATLAS experiments have established that the JPCquantum numbers of the Higgs boson should be 0++, small CP violation in the Higgs sector (i.e. = 10% contribution of the CP-odd state) cannot be excluded with the current experimental precision. We review a possibility to measure the CP violating mixing angle between scalar and pseudoscalar states of the extended Higgs sector, at 1 TeV ILC with the ILD detector.",
journal = "Proceedings of Science",
title = "Probing CPV mixing in the Higgs sector in VBF at 1 TeV ILC",
volume = "449",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13125"
}

Božović Jelisavčić, I., Vukašinović, N.,& Kačarević, G.. (2024). Probing CPV mixing in the Higgs sector in VBF at 1 TeV ILC. in Proceedings of Science, 449.
https://hdl.handle.net/21.15107/rcub_vinar_13125

Božović Jelisavčić I, Vukašinović N, Kačarević G. Probing CPV mixing in the Higgs sector in VBF at 1 TeV ILC. in Proceedings of Science. 2024;449.
https://hdl.handle.net/21.15107/rcub_vinar_13125 .

Božović Jelisavčić, Ivanka, Vukašinović, Nataša, Kačarević, Goran, "Probing CPV mixing in the Higgs sector in VBF at 1 TeV ILC" in Proceedings of Science, 449 (2024),
https://hdl.handle.net/21.15107/rcub_vinar_13125 .

TY  - CONF
AU  - Smiljanić, Ivan
AU  - Božović-Jelisavčić, Ivanka
AU  - Kačarević, Goran
AU  - Vukašinović, Nataša
AU  - Vidaković, Ivana
AU  - Reković, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11932
AB  - The very forward region is one of the most challenging regions to instrument at a future e+e−  collider. Machine-detector interface at CEPC will include a calorimeter dedicated for precision measurement of the integrated luminosity at a permill level or better. We discuss a feasibility of such precision from the point of view of systematic effects arising from luminometer mechanical precision and positioning, beam-related requirements and physics background. Additionally, a method of the beam energy spread determination, initially proposed for FCC, is discussed for the CEPC beams, as well as the impact of beam energy spread uncertainty on integrated luminosity measurement and the precision of electroweak observables determination at the Z0  pole.
C3  - Proceedings of Science
T1  - Systematic uncertainties in integrated luminosity measurement at CEPC
VL  - 427
SP  - 193246
DO  - 10.22323/1.427.0086
ER  - 

@conference{
author = "Smiljanić, Ivan and Božović-Jelisavčić, Ivanka and Kačarević, Goran and Vukašinović, Nataša and Vidaković, Ivana and Reković, Vladimir",
year = "2023",
abstract = "The very forward region is one of the most challenging regions to instrument at a future e+e−  collider. Machine-detector interface at CEPC will include a calorimeter dedicated for precision measurement of the integrated luminosity at a permill level or better. We discuss a feasibility of such precision from the point of view of systematic effects arising from luminometer mechanical precision and positioning, beam-related requirements and physics background. Additionally, a method of the beam energy spread determination, initially proposed for FCC, is discussed for the CEPC beams, as well as the impact of beam energy spread uncertainty on integrated luminosity measurement and the precision of electroweak observables determination at the Z0  pole.",
journal = "Proceedings of Science",
title = "Systematic uncertainties in integrated luminosity measurement at CEPC",
volume = "427",
pages = "193246",
doi = "10.22323/1.427.0086"
}

Smiljanić, I., Božović-Jelisavčić, I., Kačarević, G., Vukašinović, N., Vidaković, I.,& Reković, V.. (2023). Systematic uncertainties in integrated luminosity measurement at CEPC. in Proceedings of Science, 427, 193246.
https://doi.org/10.22323/1.427.0086

Smiljanić I, Božović-Jelisavčić I, Kačarević G, Vukašinović N, Vidaković I, Reković V. Systematic uncertainties in integrated luminosity measurement at CEPC. in Proceedings of Science. 2023;427:193246.
doi:10.22323/1.427.0086 .

Smiljanić, Ivan, Božović-Jelisavčić, Ivanka, Kačarević, Goran, Vukašinović, Nataša, Vidaković, Ivana, Reković, Vladimir, "Systematic uncertainties in integrated luminosity measurement at CEPC" in Proceedings of Science, 427 (2023):193246,
https://doi.org/10.22323/1.427.0086 . .

TY  - CONF
AU  - Vukašinović, Nataša
AU  - Božović-Jelisavčić, Ivanka
AU  - Kačarević, Goran
AU  - Radulović, M.
AU  - Stevanović, J.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11935
AB  - In this talk we discuss the CP violation in the Higgs sector under assumption that Higgs is a mixture of CP even and odd states. Study is done in ZZ-fusion, at the intermediate energy stage of CLIC, in full simulation of a detector and machine and physics related backgrounds. By measuring kinematic properties of electron and positron in the final state, in the Higgs exlusive decay to bb¯  to reduce backgrounds, we discuss the statistical precision of CP-violating mixing angle measurement with 2.5 ab−1  of data.
C3  - Proceedings of Science
T1  - Determination of the CPV Higgs mixing angle in ZZ-fusion at 1.4 TeV CLIC
VL  - 427
SP  - 193246
DO  - 10.22323/1.427.0102
ER  - 

@conference{
author = "Vukašinović, Nataša and Božović-Jelisavčić, Ivanka and Kačarević, Goran and Radulović, M. and Stevanović, J.",
year = "2023",
abstract = "In this talk we discuss the CP violation in the Higgs sector under assumption that Higgs is a mixture of CP even and odd states. Study is done in ZZ-fusion, at the intermediate energy stage of CLIC, in full simulation of a detector and machine and physics related backgrounds. By measuring kinematic properties of electron and positron in the final state, in the Higgs exlusive decay to bb¯  to reduce backgrounds, we discuss the statistical precision of CP-violating mixing angle measurement with 2.5 ab−1  of data.",
journal = "Proceedings of Science",
title = "Determination of the CPV Higgs mixing angle in ZZ-fusion at 1.4 TeV CLIC",
volume = "427",
pages = "193246",
doi = "10.22323/1.427.0102"
}

Vukašinović, N., Božović-Jelisavčić, I., Kačarević, G., Radulović, M.,& Stevanović, J.. (2023). Determination of the CPV Higgs mixing angle in ZZ-fusion at 1.4 TeV CLIC. in Proceedings of Science, 427, 193246.
https://doi.org/10.22323/1.427.0102

Vukašinović N, Božović-Jelisavčić I, Kačarević G, Radulović M, Stevanović J. Determination of the CPV Higgs mixing angle in ZZ-fusion at 1.4 TeV CLIC. in Proceedings of Science. 2023;427:193246.
doi:10.22323/1.427.0102 .

Vukašinović, Nataša, Božović-Jelisavčić, Ivanka, Kačarević, Goran, Radulović, M., Stevanović, J., "Determination of the CPV Higgs mixing angle in ZZ-fusion at 1.4 TeV CLIC" in Proceedings of Science, 427 (2023):193246,
https://doi.org/10.22323/1.427.0102 . .

TY  - CONF
AU  - Vidaković, Ivana
AU  - Radulović, Mirko
AU  - Stevanović, Jasna
AU  - Kačarević, Goran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11937
AB  - Even though the environment at future e+e- colliders is practically QCD background free, there is a large number of processes with high cross-sections and/or similar topology as the Higgs signal of interest. Maximization of the achievable precision of measurements in the Higgs sector and beyond calls for optimized event selection with respect to the statistical significance. This is where the Multivariate Analysis (MVA) is employed, separating the signal from numerous backgrounds on the basis of their kinematic and other properties. In this paper, we discuss the basics of MVA, its application and performance, in examples of several Higgs analyses done in our group using full simulation of the CLIC data.
C3  - Proceedings of Science
T1  - Application of Multivariate Analysis in Separation of Higgs Boson Signal at future e+e- colliders
VL  - 427
SP  - 193246
DO  - 10.22323/1.427.0101
ER  - 

@conference{
author = "Vidaković, Ivana and Radulović, Mirko and Stevanović, Jasna and Kačarević, Goran",
year = "2023",
abstract = "Even though the environment at future e+e- colliders is practically QCD background free, there is a large number of processes with high cross-sections and/or similar topology as the Higgs signal of interest. Maximization of the achievable precision of measurements in the Higgs sector and beyond calls for optimized event selection with respect to the statistical significance. This is where the Multivariate Analysis (MVA) is employed, separating the signal from numerous backgrounds on the basis of their kinematic and other properties. In this paper, we discuss the basics of MVA, its application and performance, in examples of several Higgs analyses done in our group using full simulation of the CLIC data.",
journal = "Proceedings of Science",
title = "Application of Multivariate Analysis in Separation of Higgs Boson Signal at future e+e- colliders",
volume = "427",
pages = "193246",
doi = "10.22323/1.427.0101"
}

Vidaković, I., Radulović, M., Stevanović, J.,& Kačarević, G.. (2023). Application of Multivariate Analysis in Separation of Higgs Boson Signal at future e+e- colliders. in Proceedings of Science, 427, 193246.
https://doi.org/10.22323/1.427.0101

Vidaković I, Radulović M, Stevanović J, Kačarević G. Application of Multivariate Analysis in Separation of Higgs Boson Signal at future e+e- colliders. in Proceedings of Science. 2023;427:193246.
doi:10.22323/1.427.0101 .

Vidaković, Ivana, Radulović, Mirko, Stevanović, Jasna, Kačarević, Goran, "Application of Multivariate Analysis in Separation of Higgs Boson Signal at future e+e- colliders" in Proceedings of Science, 427 (2023):193246,
https://doi.org/10.22323/1.427.0101 . .

TY  - CONF
AU  - Kačarević, Goran
AU  - Božović-Jelisavčić, Ivanka
AU  - Vukašinović, Nataša
AU  - Radulović, M.
AU  - Stevanović, J.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11940
AB  - In this talk we address a full simulation of experimental measurement of the Standard Model Higgs boson decaying to di-photon at 3 TeV center-of-mass energy at the Compact Linear Collider (CLIC). Photons are massless and do not couple to Higgs boson at the tree level, but rather are created in a loop exchange of heavy particles either from the Standard Model or beyond. Any deviation of the Higgs to 𝛾𝛾 branching fraction and consequently of the Higgs to photon coupling may indicate a New Physics. It is shown that the product of the Higgs production cross section in WW-fusion and BR (𝐻 −→ 𝛾𝛾) , as the observable for determination of the Higgs to photon coupling, can be measured with a relative statistical precision of 5.5%, assuming the integrated luminosity of 5 ab−1 and unpolarized beams.
C3  - Proceedings of Science
T1  - Measurement of the Higgs to γγ branching fraction at 3 TeV CLIC
VL  - 427
SP  - 193246
DO  - 10.22323/1.427.0092
ER  - 

@conference{
author = "Kačarević, Goran and Božović-Jelisavčić, Ivanka and Vukašinović, Nataša and Radulović, M. and Stevanović, J.",
year = "2023",
abstract = "In this talk we address a full simulation of experimental measurement of the Standard Model Higgs boson decaying to di-photon at 3 TeV center-of-mass energy at the Compact Linear Collider (CLIC). Photons are massless and do not couple to Higgs boson at the tree level, but rather are created in a loop exchange of heavy particles either from the Standard Model or beyond. Any deviation of the Higgs to 𝛾𝛾 branching fraction and consequently of the Higgs to photon coupling may indicate a New Physics. It is shown that the product of the Higgs production cross section in WW-fusion and BR (𝐻 −→ 𝛾𝛾) , as the observable for determination of the Higgs to photon coupling, can be measured with a relative statistical precision of 5.5%, assuming the integrated luminosity of 5 ab−1 and unpolarized beams.",
journal = "Proceedings of Science",
title = "Measurement of the Higgs to γγ branching fraction at 3 TeV CLIC",
volume = "427",
pages = "193246",
doi = "10.22323/1.427.0092"
}

Kačarević, G., Božović-Jelisavčić, I., Vukašinović, N., Radulović, M.,& Stevanović, J.. (2023). Measurement of the Higgs to γγ branching fraction at 3 TeV CLIC. in Proceedings of Science, 427, 193246.
https://doi.org/10.22323/1.427.0092

Kačarević G, Božović-Jelisavčić I, Vukašinović N, Radulović M, Stevanović J. Measurement of the Higgs to γγ branching fraction at 3 TeV CLIC. in Proceedings of Science. 2023;427:193246.
doi:10.22323/1.427.0092 .

Kačarević, Goran, Božović-Jelisavčić, Ivanka, Vukašinović, Nataša, Radulović, M., Stevanović, J., "Measurement of the Higgs to γγ branching fraction at 3 TeV CLIC" in Proceedings of Science, 427 (2023):193246,
https://doi.org/10.22323/1.427.0092 . .

TY  - CONF
AU  - Vukašinović, Nataša
AU  - Božović-Jelisavčić, Ivanka
AU  - Kačarević, Goran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11588
AB  - Although the studies of tensor structure of the Higgs boson interactions with vector bosons and fermions at CMS and ATLAS experiments have established that the JPC quantum numbers of the Higgs boson should be 0++, small CP violation in the Higgs sector (up to 10% contribution of the CP-odd state) cannot be excluded with the current experimental precision. We review possibilities to measure CP violating mixing angle ΨCP between scalar and pseudoscalar states, at a linear electron-positron collider, at center-of-mass energy of 1 TeV.
C3  - LCWS 2023 : International Workshop on Future Linear Colliders
T1  - Measurement of the CPV Higgs mixing angle in ZZ-fusion at 1 TeV ILC
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11588
ER  - 

@conference{
author = "Vukašinović, Nataša and Božović-Jelisavčić, Ivanka and Kačarević, Goran",
year = "2023",
abstract = "Although the studies of tensor structure of the Higgs boson interactions with vector bosons and fermions at CMS and ATLAS experiments have established that the JPC quantum numbers of the Higgs boson should be 0++, small CP violation in the Higgs sector (up to 10% contribution of the CP-odd state) cannot be excluded with the current experimental precision. We review possibilities to measure CP violating mixing angle ΨCP between scalar and pseudoscalar states, at a linear electron-positron collider, at center-of-mass energy of 1 TeV.",
journal = "LCWS 2023 : International Workshop on Future Linear Colliders",
title = "Measurement of the CPV Higgs mixing angle in ZZ-fusion at 1 TeV ILC",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11588"
}

Vukašinović, N., Božović-Jelisavčić, I.,& Kačarević, G.. (2023). Measurement of the CPV Higgs mixing angle in ZZ-fusion at 1 TeV ILC. in LCWS 2023 : International Workshop on Future Linear Colliders.
https://hdl.handle.net/21.15107/rcub_vinar_11588

Vukašinović N, Božović-Jelisavčić I, Kačarević G. Measurement of the CPV Higgs mixing angle in ZZ-fusion at 1 TeV ILC. in LCWS 2023 : International Workshop on Future Linear Colliders. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_11588 .

Vukašinović, Nataša, Božović-Jelisavčić, Ivanka, Kačarević, Goran, "Measurement of the CPV Higgs mixing angle in ZZ-fusion at 1 TeV ILC" in LCWS 2023 : International Workshop on Future Linear Colliders (2023),
https://hdl.handle.net/21.15107/rcub_vinar_11588 .

TY  - JOUR
AU  - Smiljanić, Ivan
AU  - Božović-Jelisavčić, Ivanka
AU  - Kačarević, Goran
AU  - Vukašinović, Nataša
AU  - Vidaković, Ivana
AU  - Reković, Vladimir
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10566
AB  - The very forward region is one of the most challenging regions to instrument at a future e + e - collider. At CEPC, machine-detector interface includes, among others, a calorimeter dedicated for precision measurement of the integrated luminosity at a per mill level or better. Here we review a feasibility of such precision, from the point of view of systematic effects arising from luminometer mechanical precision and positioning, beam-related requirements and physics background from two-photon processes. The impact of the beam energy spread and its uncertainty on the integrated luminosity precision is also discussed, as well as the achievable beam energy spread precision with the post-CDR CEPC beams. © 2022 IOP Publishing Ltd and Sissa Medialab.
T2  - Journal of Instrumentation
T1  - Systematic uncertainties in integrated luminosity measurement at CEPC
VL  - 17
IS  - 9
DO  - 10.1088/1748-0221/17/09/P09014
ER  - 

@article{
author = "Smiljanić, Ivan and Božović-Jelisavčić, Ivanka and Kačarević, Goran and Vukašinović, Nataša and Vidaković, Ivana and Reković, Vladimir",
year = "2022",
abstract = "The very forward region is one of the most challenging regions to instrument at a future e + e - collider. At CEPC, machine-detector interface includes, among others, a calorimeter dedicated for precision measurement of the integrated luminosity at a per mill level or better. Here we review a feasibility of such precision, from the point of view of systematic effects arising from luminometer mechanical precision and positioning, beam-related requirements and physics background from two-photon processes. The impact of the beam energy spread and its uncertainty on the integrated luminosity precision is also discussed, as well as the achievable beam energy spread precision with the post-CDR CEPC beams. © 2022 IOP Publishing Ltd and Sissa Medialab.",
journal = "Journal of Instrumentation",
title = "Systematic uncertainties in integrated luminosity measurement at CEPC",
volume = "17",
number = "9",
doi = "10.1088/1748-0221/17/09/P09014"
}

Smiljanić, I., Božović-Jelisavčić, I., Kačarević, G., Vukašinović, N., Vidaković, I.,& Reković, V.. (2022). Systematic uncertainties in integrated luminosity measurement at CEPC. in Journal of Instrumentation, 17(9).
https://doi.org/10.1088/1748-0221/17/09/P09014

Smiljanić I, Božović-Jelisavčić I, Kačarević G, Vukašinović N, Vidaković I, Reković V. Systematic uncertainties in integrated luminosity measurement at CEPC. in Journal of Instrumentation. 2022;17(9).
doi:10.1088/1748-0221/17/09/P09014 .

Smiljanić, Ivan, Božović-Jelisavčić, Ivanka, Kačarević, Goran, Vukašinović, Nataša, Vidaković, Ivana, Reković, Vladimir, "Systematic uncertainties in integrated luminosity measurement at CEPC" in Journal of Instrumentation, 17, no. 9 (2022),
https://doi.org/10.1088/1748-0221/17/09/P09014 . .

TY  - CONF
AU  - Vukašinović, Nataša
AU  - Božović-Jelisavčić, Ivanka
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10759
AB  - CLIC is a mature project for a future staged e-e+ linear collider at CERN. It is designed to run at three different energy stages currently assumed to be 380 GeV, 1.5 TeV and 3 TeV. Staged energy approach enables exploring precision Higgs and top physics as well as the possibility for direct and indirect BSM searches. In this paper we present an overview of the Higgs physics together with preliminary results of the CPV study in ZZ-fusion at the intermediate energy stage.
C3  - Proceedings of Science
T1  - Determination of CPV Higgs mixing angle in ZZ-fusion at 1.4 TeV CLIC
VL  - 414
IS  - 527
SP  - 187015
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10759
ER  - 

@conference{
author = "Vukašinović, Nataša and Božović-Jelisavčić, Ivanka",
year = "2022",
abstract = "CLIC is a mature project for a future staged e-e+ linear collider at CERN. It is designed to run at three different energy stages currently assumed to be 380 GeV, 1.5 TeV and 3 TeV. Staged energy approach enables exploring precision Higgs and top physics as well as the possibility for direct and indirect BSM searches. In this paper we present an overview of the Higgs physics together with preliminary results of the CPV study in ZZ-fusion at the intermediate energy stage.",
journal = "Proceedings of Science",
title = "Determination of CPV Higgs mixing angle in ZZ-fusion at 1.4 TeV CLIC",
volume = "414",
number = "527",
pages = "187015",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10759"
}

Vukašinović, N.,& Božović-Jelisavčić, I.. (2022). Determination of CPV Higgs mixing angle in ZZ-fusion at 1.4 TeV CLIC. in Proceedings of Science, 414(527), 187015.
https://hdl.handle.net/21.15107/rcub_vinar_10759

Vukašinović N, Božović-Jelisavčić I. Determination of CPV Higgs mixing angle in ZZ-fusion at 1.4 TeV CLIC. in Proceedings of Science. 2022;414(527):187015.
https://hdl.handle.net/21.15107/rcub_vinar_10759 .

Vukašinović, Nataša, Božović-Jelisavčić, Ivanka, "Determination of CPV Higgs mixing angle in ZZ-fusion at 1.4 TeV CLIC" in Proceedings of Science, 414, no. 527 (2022):187015,
https://hdl.handle.net/21.15107/rcub_vinar_10759 .