Yerzhan Mukhamejanov
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
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Yerzhan Mukhamejanov has a total of 1000 co-authors. Here are the top co-authors by number of shared publications:
- Nurzhan Saduyev
Institute of Nuclear Physics, Ibragimov Street 1, Almaty, 050032, The Republic of Kazakhstan
11 shared publications - Daniyar Janseitov
Institute of Nuclear Physics, Almaty, Kazakhstan
8 shared publications - Nassurlla Burtebayev
Institute of Nuclear Physics, 050032 Almaty, Kazakhstan
8 shared publications - Temur Enik
Joint Institute for Nuclear Research
8 shared publications - Enrico Gamberini
CERN
7 shared publications - Vitalii Bautin
Joint Institute for Nuclear Research
7 shared publications
Latest Publications
- 29 October 2026
- Published by Elsevier in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- Vol. 1095
Requirements to the read-out electronics for future Straw Trackers and the straw performance measurements with muon, hadron and electron test beams
- 29 October 2026
- Published by Elsevier in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- Vol. 1095
Requirements to the read-out electronics for future Straw Trackers and the straw performance measurements with muon, hadron and electron test beams
- Open Access
- 26 October 2026
- Published by Springer Nature in The European Physical Journal C
- Vol. 86 (10) , 1231
Measurement of di-muons from 400 GeV/c protons interacting in a thick molybdenum/tungsten target
Di-muon events emanating from a replica of the SHiP target at the CERN SPS (with a 400 GeV/c proton beam) contain a clear signal of $${J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}}$$ production. The target consisted of 13 interaction lengths of molybdenum and tungsten, followed by a 2.4m iron hadron absorber. The di-muon rate is in reasonable agreement with Monte Carlo simulation based on Pythia v8. However, the $${J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}} $$ rate observed in the data is much lower than predicted by the Monte Carlo simulation, which is advantageous for SHiP since muons with a large $$p_\textrm{T} $$ are more difficult to deflect by the active muon shield. For the center of mass rapidity ( $$y_{\textrm{cm}} $$ ) interval with the largest overlap with the NA50 measurement, $$0.3< y_{\textrm{cm}} < 0.6$$ , we obtain the production cross-section per nucleon $$\sigma ({J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}})/A$$ including the branching ratios of $${J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}} $$ decays into muons, $$B_{\mu ^+\mu ^-}$$ : $$B_{\mu ^+\mu ^-}\sigma ({J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}})/A=(1.18~\pm ~0.04~\pm ~0.10)~\textrm{nb}$$ /nucleon. This is to be compared to the NA50 extrapolated result (using a much thinner target): $$B_{\mu ^+\mu ^-}\sigma ({J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}})/A=(0.99~\pm ~0.04)~\textrm{nb}$$ /nucleon. Within the systematic errors, no significant enhancement due to secondary production of $${J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}}$$ inside the target is observed. An upper limit at 90% confidence level of possible contributions from secondary collisions of $$<32\%$$ is obtained.- 26 October 2026
- Published by Springer Nature in The European Physical Journal C
- Vol. 86 (10) , 1231
Open AccessMeasurement of di-muons from 400 GeV/c protons interacting in a thick molybdenum/tungsten target
Di-muon events emanating from a replica of the SHiP target at the CERN SPS (with a 400 GeV/c proton beam) contain a clear signal of $${J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}}$$ production. The target consisted of 13 interaction lengths of molybdenum and tungsten, followed by a 2.4m iron hadron absorber. The di-muon rate is in reasonable agreement with Monte Carlo simulation based on Pythia v8. However, the $${J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}} $$ rate observed in the data is much lower than predicted by the Monte Carlo simulation, which is advantageous for SHiP since muons with a large $$p_\textrm{T} $$ are more difficult to deflect by the active muon shield. For the center of mass rapidity ( $$y_{\textrm{cm}} $$ ) interval with the largest overlap with the NA50 measurement, $$0.3< y_{\textrm{cm}} < 0.6$$ , we obtain the production cross-section per nucleon $$\sigma ({J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}})/A$$ including the branching ratios of $${J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}} $$ decays into muons, $$B_{\mu ^+\mu ^-}$$ : $$B_{\mu ^+\mu ^-}\sigma ({J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}})/A=(1.18~\pm ~0.04~\pm ~0.10)~\textrm{nb}$$ /nucleon. This is to be compared to the NA50 extrapolated result (using a much thinner target): $$B_{\mu ^+\mu ^-}\sigma ({J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}})/A=(0.99~\pm ~0.04)~\textrm{nb}$$ /nucleon. Within the systematic errors, no significant enhancement due to secondary production of $${J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi \hspace{1.111pt}}$$ inside the target is observed. An upper limit at 90% confidence level of possible contributions from secondary collisions of $$<32\%$$ is obtained. - Open Access
- 1 August 2026
- Published by IOP Publishing in Journal of Instrumentation
- Vol. 21 (08) , P08018
Charge readout electronics for the DUNE horizontal drift far detector: design and performance in ProtoDUNE-HD
DUNE (Deep Underground Neutrino Experiment) is a long-baseline neutrino oscillation experiment currently under construction, whose far detectors will be the largest liquid argon time projection chambers ever built. This detector design calls for custom-built cryogenic front-end electronics to meet its performance requirements. This paper describes the charge readout electronics that will be used in the DUNE horizontal drift (HD) far detector and presents performance results using data from the ProtoDUNE-HD detector, a 770 ton liquid argon time projection chamber operated at the CERN Neutrino Platform in 2024 that served as the final prototype of the DUNE HD design.
- 1 August 2026
- Published by IOP Publishing in Journal of Instrumentation
- Vol. 21 (08) , P08018
Open AccessCharge readout electronics for the DUNE horizontal drift far detector: design and performance in ProtoDUNE-HD
DUNE (Deep Underground Neutrino Experiment) is a long-baseline neutrino oscillation experiment currently under construction, whose far detectors will be the largest liquid argon time projection chambers ever built. This detector design calls for custom-built cryogenic front-end electronics to meet its performance requirements. This paper describes the charge readout electronics that will be used in the DUNE horizontal drift (HD) far detector and presents performance results using data from the ProtoDUNE-HD detector, a 770 ton liquid argon time projection chamber operated at the CERN Neutrino Platform in 2024 that served as the final prototype of the DUNE HD design.
- Open Access
- 3 June 2026
- Published by American Physical Society (APS) in Physical Review D
- Vol. 113 (11)
Measurement of exclusive π + -argon interactions using ProtoDUNE-SP
We present the measurement of π + -argon inelastic cross sections using the ProtoDUNE single-phase liquid argon time projection chamber in the incident π + kinetic energy range of 500–800 MeV in multiple exclusive channels (absorption, charge exchange, and the remaining inelastic interactions). The results of this analysis are important inputs to simulations of liquid argon neutrino experiments such as the Deep Underground Neutrino Experiment and the Short Baseline Neutrino program at Fermi National Accelerator Laboratory. They will be employed to improve the modeling of final state interactions within neutrino event generators used by these experiments, as well as the modeling of π + -argon secondary interactions within the liquid argon. This is the first measurement of π + -argon absorption at this kinetic energy range as well as the first ever measurement of π + -argon charge exchange.
- 3 June 2026
- Published by American Physical Society (APS) in Physical Review D
- Vol. 113 (11)
Open AccessMeasurement of exclusive π + -argon interactions using ProtoDUNE-SP
We present the measurement of π + -argon inelastic cross sections using the ProtoDUNE single-phase liquid argon time projection chamber in the incident π + kinetic energy range of 500–800 MeV in multiple exclusive channels (absorption, charge exchange, and the remaining inelastic interactions). The results of this analysis are important inputs to simulations of liquid argon neutrino experiments such as the Deep Underground Neutrino Experiment and the Short Baseline Neutrino program at Fermi National Accelerator Laboratory. They will be employed to improve the modeling of final state interactions within neutrino event generators used by these experiments, as well as the modeling of π + -argon secondary interactions within the liquid argon. This is the first measurement of π + -argon absorption at this kinetic energy range as well as the first ever measurement of π + -argon charge exchange.
- Open Access
- 27 December 2025
- Published by Elsevier in Physics Letters B
- Vol. 872
Search for heavy neutral leptons in π + decays to positrons
- 27 December 2025
- Published by Elsevier in Physics Letters B
- Vol. 872
Open AccessSearch for heavy neutral leptons in π + decays to positrons
- Open Access
- 24 November 2025
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2025 (11) , 143
Searches for hidden sectors using K+ → π+X decays
A bstract: Results from the study of the rare decays $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ , K + → π + μ + μ − and K + → π + γγ at the NA62 experiment at CERN are interpreted in terms of improved limits for $$ \mathcal{B}\left({K}^{+}\to {\pi}^{+}X\right) $$ and coupling parameters of hidden-sector models, where X is a mediator. World-leading limits are achieved for dark photon, dark scalar and axion-like particle models.- 24 November 2025
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2025 (11) , 143
Open AccessSearches for hidden sectors using K+ → π+X decays
A bstract: Results from the study of the rare decays $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ , K + → π + μ + μ − and K + → π + γγ at the NA62 experiment at CERN are interpreted in terms of improved limits for $$ \mathcal{B}\left({K}^{+}\to {\pi}^{+}X\right) $$ and coupling parameters of hidden-sector models, where X is a mediator. World-leading limits are achieved for dark photon, dark scalar and axion-like particle models. - Open Access
Monte Carlo Simulation of the HERO Orbital Detector Calorimeter
The High-Energy Ray Observatory (HERO) is a space-based experiment designed to measure the spectrum and composition of cosmic rays using an ionization calorimeter. The instrument’s effective geometric factor is at least 12 m2·sr for protons and 16 m2·sr or more for nuclei and electrons. Over an exposure period of approximately 5 to 7 years, the mission will enable high-resolution, element-by-element measurements of cosmic ray spectra in the energy range of 1012 to 1016 eV per particle. A Monte Carlo simulation of the calorimeter—based on a scintillation detector with and without boron additives—was carried out using the GEANT4 software package. In this study, we examine the impact of boron additives in scintillator materials on energy resolution and their potential for discriminating between electromagnetic and hadronic components of cosmic rays. The primary objectives are to demonstrate that boron does not degrade detector characteristics and that it enables an additional timing-based method for cosmic-ray component rejection. The planned launch of the orbital experiment is scheduled for no earlier than 2029.
Open AccessMonte Carlo Simulation of the HERO Orbital Detector Calorimeter
The High-Energy Ray Observatory (HERO) is a space-based experiment designed to measure the spectrum and composition of cosmic rays using an ionization calorimeter. The instrument’s effective geometric factor is at least 12 m2·sr for protons and 16 m2·sr or more for nuclei and electrons. Over an exposure period of approximately 5 to 7 years, the mission will enable high-resolution, element-by-element measurements of cosmic ray spectra in the energy range of 1012 to 1016 eV per particle. A Monte Carlo simulation of the calorimeter—based on a scintillation detector with and without boron additives—was carried out using the GEANT4 software package. In this study, we examine the impact of boron additives in scintillator materials on energy resolution and their potential for discriminating between electromagnetic and hadronic components of cosmic rays. The primary objectives are to demonstrate that boron does not degrade detector characteristics and that it enables an additional timing-based method for cosmic-ray component rejection. The planned launch of the orbital experiment is scheduled for no earlier than 2029.
- Open Access
A Scintillation Hodoscope for Measuring the Flux of Cosmic Ray Muons at the Tien Shan High Mountain Station
For further investigation of the properties of the muon component in the core regions of extensive air showers (EASs), a new underground hodoscopic set-up with a total sensitive area of 22 m2 was built at the Tien Shan High Mountain Cosmic Ray Station. The hodoscope is based on a set of large-sized scintillation charged particle detectors with an output signal of analog type. The installation ensures a (5–8) GeV energy threshold of muon registration and a ∼ dynamic range for the measurement of the density of muon flux. A program facility was designed that uses modern machine learning techniques for automated search for the typical scintillation pulse pattern in an oscillogram of a noisy analog signal at the output of the hodoscope detector. The program provides a ∼99% detection probability of useful signals, with a relative share of false positives below 1%, and has a sufficient operation speed for real-time analysis of incoming data. Complete verification of the hardware and software tools was performed under realistic operation conditions, and the results obtained demonstrate the correctness of the proposed method and its practical applicability to the investigation of the muon flux in EASs. In the course of the installation testing, a preliminary physical result was obtained concerning the rise of the multiplicity of muon particles around an EAS core in dependence on the primary EAS energy.Open AccessA Scintillation Hodoscope for Measuring the Flux of Cosmic Ray Muons at the Tien Shan High Mountain Station
For further investigation of the properties of the muon component in the core regions of extensive air showers (EASs), a new underground hodoscopic set-up with a total sensitive area of 22 m2 was built at the Tien Shan High Mountain Cosmic Ray Station. The hodoscope is based on a set of large-sized scintillation charged particle detectors with an output signal of analog type. The installation ensures a (5–8) GeV energy threshold of muon registration and a ∼ dynamic range for the measurement of the density of muon flux. A program facility was designed that uses modern machine learning techniques for automated search for the typical scintillation pulse pattern in an oscillogram of a noisy analog signal at the output of the hodoscope detector. The program provides a ∼99% detection probability of useful signals, with a relative share of false positives below 1%, and has a sufficient operation speed for real-time analysis of incoming data. Complete verification of the hardware and software tools was performed under realistic operation conditions, and the results obtained demonstrate the correctness of the proposed method and its practical applicability to the investigation of the muon flux in EASs. In the course of the installation testing, a preliminary physical result was obtained concerning the rise of the multiplicity of muon particles around an EAS core in dependence on the primary EAS energy. - Open Access
- 25 May 2025
- Published by Springer Nature in The European Physical Journal C
- Vol. 85 (5) , 1-12
Search for hadronic decays of feebly-interacting particles at NA62
The NA62 experiment at CERN has the capability to collect data in a beam-dump mode, where 400 GeV protons are dumped on an absorber. In this configuration, New Physics particles, including dark photons, dark scalars, and axion-like particles, may be produced in the absorber and decay in the instrumented volume beginning approximately 80 m downstream of the dump. A search for these particles decaying in flight to hadronic final states is reported, based on an analysis of a sample of $$1.4 \times 10^{17}$$ protons on dump collected in 2021. No evidence of a New Physics signal is observed, excluding new regions of parameter spaces of multiple models.- 25 May 2025
- Published by Springer Nature in The European Physical Journal C
- Vol. 85 (5) , 1-12
Open AccessSearch for hadronic decays of feebly-interacting particles at NA62
The NA62 experiment at CERN has the capability to collect data in a beam-dump mode, where 400 GeV protons are dumped on an absorber. In this configuration, New Physics particles, including dark photons, dark scalars, and axion-like particles, may be produced in the absorber and decay in the instrumented volume beginning approximately 80 m downstream of the dump. A search for these particles decaying in flight to hadronic final states is reported, based on an analysis of a sample of $$1.4 \times 10^{17}$$ protons on dump collected in 2021. No evidence of a New Physics signal is observed, excluding new regions of parameter spaces of multiple models.