Search Results - "Yokkaichi, S."
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Experimental signature of medium modifications for rho and omega mesons in the 12 GeV p+A reactions
Published in Physical review letters (10-03-2006)“…The invariant mass spectra of e+e- pairs produced in 12 GeV proton-induced nuclear reactions are measured at the KEK Proton Synchrotron. On the low-mass side…”
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Evidence for in-medium modification of the phi meson at normal nuclear density
Published in Physical review letters (26-01-2007)“…Invariant mass spectra of e(+) e(-) pairs have been measured in 12 GeV p + A reactions to detect possible in-medium modification of vector mesons. Copper and…”
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Towards the Measurement of the Mass Modifications of Vector Mesons in a Finite Density Matter
Published in Acta physica Polonica, A (01-09-2022)Get full text
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A hadron blind detector for the PHENIX experiment at RHIC
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (11-07-2005)“…A Hadron Blind Detector (HBD) is being developed for the PHENIX experiment at RHIC. It consists of a Cherenkov radiator operated with pure CF 4 directly…”
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Trigger Merging Module for the J-PARC E16 Experiment
Published in IEEE transactions on nuclear science (01-08-2019)“…An experiment to measure an invariant mass of <inline-formula> <tex-math notation="LaTeX">\phi </tex-math></inline-formula> mesons in nuclear medium is planned…”
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Measurement of the Ξ−p scattering cross sections at low energy
Published in Physics letters. B (09-02-2006)“…In this Letter we report on the cross-section measurements for Ξ−p elastic and inelastic scatterings at low energy using an active scintillating fiber target…”
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Observation of rho/omega meson modification in nuclear matter
Published in Physical review letters (28-05-2001)“…We measured the invariant mass spectra of electron-positron pairs in the target rapidity region of 12-GeV p+A reactions. We have observed a significant…”
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Nuclear-matter modification of decay widths in the phi-->e+e- and phi-->K+K- channels
Published in Physical review letters (13-04-2007)“…The invariant mass spectra of phi-->K+K- are measured in 12 GeV p+A reactions in order to search for the in-medium modification of phi mesons. The observed…”
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Σ + p elastic scattering cross sections in the region of 350 ⩽ P Σ + ⩽ 750 MeV / c with a scintillating fiber active target
Published in Nuclear physics. A (31-10-2005)“…A hyperon–nucleon scattering experiment, KEK-PS E289, was carried out at the K2 beam line in KEK. We adopted a scintillating fiber active target as a hydrogen…”
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Development of a time projection chamber using gas electron multipliers (GEM–TPC)
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (15-10-2006)“…We developed a prototype time projection chamber using gas electron multipliers (GEM–TPC) for high energy heavy ion collision experiments. To investigate its…”
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Spectrometer for measurements of φ mesons in nuclear matter produced through 12-GeV p+A reactions
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (11-01-2004)“…A spectrometer was constructed to measure the invariant mass spectra of ρ, ω and φ mesons through their e +e − or K +K − decays. The KEK experiment E325 was…”
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Σp elastic-scattering in the region of 400<p<700 MeV/c with a scintillating-fiber active target
Published in Nuclear physics. A (28-08-2000)Get full text
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Measurement of Long-Range Angular Correlation and Quadrupole Anisotropy of Pions and (Anti)Protons in Central d+Au Collisions at sNN=200 GeV
Published in Physical review letters (12-05-2015)“…We present azimuthal angular correlations between charged hadrons and energy deposited in calorimeter towers in central d+Au and minimum bias p+p collisions at…”
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Measurement of invariant mass spectra of vector meson decaying in nuclear matter
Published in Nuclear physics. A (30-06-2003)“…The experiment E325 has been performed at KEK PS. The data taking has been completed on February 2002. We have measured the invariant mass spectrum of e +e −…”
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PHENIX on-line and off-line computing
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-03-2003)“…Data handling in PHENIX is carried out by the On-Line Computing System (ONCS) and Off-Line Computing System (Off-Line). ONCS provides the overall control and…”
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Mass production of hydrophobic silica aerogel and readout optics of Cherenkov light
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (21-01-2001)“…We have produced 500 l of hydrophobic silica aerogel for the threshold-type Cherenkov detectors to trigger kaons in the momentum region of 0.5– 2.0 GeV/c . The…”
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Beam Energy and Centrality Dependence of Direct-Photon Emission from Ultrarelativistic Heavy-Ion Collisions
Published in Physical review letters (10-07-2019)“…The PHENIX collaboration presents first measurements of low-momentum (0.4<p_{T}<3 GeV/c) direct-photon yields from Au+Au collisions at sqrt[s_{NN}]=39 and…”
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Centrality dependence of low-momentum direct-photon production in Au plus Au collisions at root s(NN)=200 GeV
Published in Physical review. C, Nuclear physics (05-06-2015)“…The PHENIX experiment at RHIC has measured the centrality dependence of the direct photon yield from Au + Au collisions at root s(NN) = 200 GeV down to pT =…”
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Centrality categorization Rp(d)+A in high-energy collisions
Published in Physical review. C, Nuclear physics (05-09-2014)“…High-energy proton- and deuteron-nucleus collisions provide an excellent tool for studying a wide array of physics effects, including modifications of parton…”
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