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The Technical Design for the COMET Phase-I experiment is presented in this paper. COMET is an experiment at J-PARC, Japan, which will search for neutrinoless conversion of muons into electrons in the field of an aluminium nucleus ($\mu-e$…

Instrumentation and Detectors · Physics 2020-05-20 The COMET Collaboration , R. Abramishvili , G. Adamov , R. R. Akhmetshin , A. Allin , J. C. Angélique , V. Anishchik , M. Aoki , D. Aznabayev , I. Bagaturia , G. Ban , Y. Ban , D. Bauer , D. Baygarashev , A. E. Bondar , C. Cârloganu , B. Carniol , T. T. Chau , J. K. Chen , S. J. Chen , Y. E. Cheung , W. da Silva , P. D. Dauncey , C. Densham , G. Devidze , P. Dornan , A. Drutskoy , V. Duginov , Y. Eguchi , L. B. Epshteyn , P. Evtoukhovich , S. Fayer , G. V. Fedotovich , M. Finger , M. Finger , Y. Fujii , Y. Fukao , J. L. Gabriel , P. Gay , E. Gillies , D. N. Grigoriev , K. Gritsay , V. H. Hai , E. Hamada , I. H. Hashim , S. Hashimoto , O. Hayashi , T. Hayashi , T. Hiasa , Z. A. Ibrahim , Y. Igarashi , F. V. Ignatov , M. Iio , K. Ishibashi , A. Issadykov , T. Itahashi , A. Jansen , X. S. Jiang , P. Jonsson , T. Kachelhoffer , V. Kalinnikov , E. Kaneva , F. Kapusta , H. Katayama , K. Kawagoe , R. Kawashima , N. Kazak , V. F. Kazanin , O. Kemularia , A. Khvedelidze , M. Koike , T. Kormoll , G. A. Kozlov , A. N. Kozyrev , M. Kravchenko , B. Krikler , G. Kumsiashvili , Y. Kuno , Y. Kuriyama , Y. Kurochkin , A. Kurup , B. Lagrange , J. Lai , M. J. Lee , H. B. Li , R. P. Litchfield , W. G. Li , T. Loan , D. Lomidze , I. Lomidze , P. Loveridge , G. Macharashvili , Y. Makida , Y. J. Mao , O. Markin , Y. Matsuda , A. Melkadze , A. Melnik , T. Mibe , S. Mihara , N. Miyamoto , Y. Miyazaki , F. Mohamad Idris , K. A. Mohamed Kamal Azmi , A. Moiseenko , M. Moritsu , Y. Mori , T. Motoishi , H. Nakai , Y. Nakai , T. Nakamoto , Y. Nakamura , Y. Nakatsugawa , Y. Nakazawa , J. Nash , H. Natori , V. Niess , M. Nioradze , H. Nishiguchi , K. Noguchi , T. Numao , J. O'Dell , T. Ogitsu , S. Ohta , K. Oishi , K. Okamoto , T. Okamura , K. Okinaka , C. Omori , T. Ota , J. Pasternak , A. Paulau , D. Picters , V. Ponariadov , G. Quémener , A. A. Ruban , V. Rusinov , B. Sabirov , H. Sakamoto , P. Sarin , K. Sasaki , A. Sato , J. Sato , Y. K. Semertzidis , N. Shigyo , Dz. Shoukavy , M. Slunecka , D. Stöckinger , M. Sugano , T. Tachimoto , T. Takayanagi , M. Tanaka , J. Tang , C. V. Tao , A. M. Teixeira , Y. Tevzadze , T. Thanh , J. Tojo , S. S. Tolmachev , M. Tomasek , M. Tomizawa , T. Toriashvili , H. Trang , I. Trekov , Z. Tsamalaidze , N. Tsverava , T. Uchida , Y. Uchida , K. Ueno , E. Velicheva , A. Volkov , V. Vrba , W. A. T. Wan Abdullah , P. Warin-Charpentier , M. L. Wong , T. S. Wong , C. Wu , T. Y. Xing , H. Yamaguchi , A. Yamamoto , M. Yamanaka , T. Yamane , Y. Yang , T. Yano , W. C. Yao , B. Yeo , H. Yoshida , M. Yoshida , T. Yoshioka , Y. Yuan , Yu. V. Yudin , M. V. Zdorovets , J. Zhang , Y. Zhang , K. Zuber

Charged Lepton Flavor Violation is expected to be one of the most powerful tools to reveal physics beyond the Standard Model. The COMET experiment aims to search for the neutrinoless coherent transition of a muon into an electron in the…

High Energy Physics - Experiment · Physics 2022-03-29 Manabu Moritsu

The COMET experiment at J-PARC, Japan, aims to search for muon to electron conversion with aluminium nuclei, achieving a sensitivity four orders of magnitude higher than the current upper limit at a 90% confidence level. The proton beam…

High Energy Physics - Experiment · Physics 2023-08-29 Yuki Fujii

Forbidden in the Standard Model, Charged Lepton Flavour Violation is a strong probe for New Physics. The COMET Experiment will measure one of these processes: that of COherent Muon to Electron Transitions, where a muon converts to an…

Instrumentation and Detectors · Physics 2015-12-31 Benjamin Edward Krikler

The experimental search for coherent neutrinoless conversion of muon to electron in the presence of a nucleus, aims to probe the possibility of charged lepton flavour violation. The COMET experiment at J-PARC is one such setup offering…

High Energy Physics - Experiment · Physics 2022-01-14 D. Mulmule

The reconstruction of the trajectories of charged particles, or track reconstruction, is a key computational challenge for particle and nuclear physics experiments. While the tuning of track reconstruction algorithms can depend strongly on…

The COMET Phase-$\alpha$ experiment aims to evaluate the novel muon transport beamline for the muon-to-electron conversion search at J-PARC, Japan. A dedicated Range Counter (RC) was developed to measure the momentum spectrum of transported…

sPHENIX is a high energy nuclear physics experiment under construction at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory (BNL). The primary physics goals of sPHENIX are to study the quark-gluon-plasma, as well as the…

This paper discusses a parallelized event reconstruction of the COMET Phase-I experiment. The experiment aims to discover charged lepton flavor violation by observing 104.97 MeV electrons from neutrinoless muon-to-electron conversion in…

Instrumentation and Detectors · Physics 2020-09-22 Beomki Yeo , MyeongJae Lee , Yoshitaka Kuno

The reconstruction of charged particle trajectories is one of the most complex and CPU consuming parts of event processing in high energy experiments. At future hadron colliders such as the High-Luminosity Large Hadron Collider (HL-LHC) or…

Instrumentation and Detectors · Physics 2019-10-25 Xiaocong Ai

With an electron-positron collider operating at center-of-mass-energy 2-7 GeV and a peak luminosity above $0.5\times10^{35} cm^{-2} s^{-1}$, the STCF physics program will provide an unique platform for in-depth studies of hadron structure…

High Energy Physics - Experiment · Physics 2023-07-26 Xiaocong Ai , Xingtao Huang , Yi Liu

The COMET experiment focuses on searching for the direct conversion of a muon into an electron on an aluminum nucleus without emitting a neutrino (so-called $\mu\rightarrow e$ conversion). This conversion violates the lepton flavor…

Instrumentation and Detectors · Physics 2024-12-10 N. Tsverava , G. Adamov , D. Chokheli , H. Nishiguchi , T. Toriashvili , Z. Tsamalaidze

The COMET experiment, conducted at J-PARC, aims to search for muon-to-electron conversion with an unprecedentedly high sensitivity. One of the severest backgrounds in the Phase-I experiment originates from cosmic-ray muons. A cosmic muon…

High Energy Physics - Experiment · Physics 2025-08-22 Manabu Moritsu , Hai-Bo Li , Tianyu Xing , Ye Yuan , Yao Zhang

The ATLAS experiment identifies and reconstructs muons with two high precision tracking systems, the Inner Detector and the Muon Spectrometer, which provide independent measurements of the muon momentum. This paper summarizes the…

High Energy Physics - Experiment · Physics 2019-08-13 Maximilian Goblirsch-Kolb

This paper presents the performance of the ATLAS muon reconstruction during the LHC run with $pp$ collisions at $\sqrt{s}=7-8$ TeV in 2011-2012, focusing mainly on data collected in 2012. Measurements of the reconstruction efficiency and of…

High Energy Physics - Experiment · Physics 2014-12-09 ATLAS Collaboration

The ANTARES Collaboration is building a high-energy neutrino telescope at 2500 m depth in the Mediterranean Sea. The experiment aims to search for high-energy cosmic neutrinos through the detection of Cerenkov light induced by muons and…

Astrophysics · Physics 2007-10-30 Y. Becherini

This paper presents a study of the performance of the muon reconstruction in the analysis of proton-proton collisions at $\sqrt{s}$=7 TeV at the LHC, recorded by the ATLAS detector in 2010. This performance is described in terms of…

High Energy Physics - Experiment · Physics 2014-09-30 ATLAS Collaboration

The search for charged lepton flavour violation (CLFV) has enormous discovery potential in probing new physics Beyond the Standard Model (BSM). Among the muonic CLFV processes, $\mu \to e$ conversion is one of the most important processes,…

The AlCap experiment is a joint project between the COMET and Mu2e collaborations. Both experiments intend to look for the lepton-flavour violating conversion $\mu + A \rightarrow e + A$, using tertiary muons from high-power pulsed proton…

Instrumentation and Detectors · Physics 2015-01-21 R. Phillip Litchfield

There are two plans of experiments to search for muon to electron ($\mu$-$e$) conversion at J-PARC, which are called DeeMe and COMET. The $\mu$-$e$ conversion is one of the charged lepton flavor violation processes. The processes are…

Instrumentation and Detectors · Physics 2018-12-05 N. Teshima
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