196 citations · 557 across the 19 of their papers we have counts for
20 papers
Chiral symmetry restoration at high matter density observed in pionic atoms
Takahiro Nishi, Kenta Itahashi, DeukSoon Ahn +45
Modern theories of physics tell that the vacuum is not an empty space. Hidden in the vacuum is a structure of anti-quarks and quarks . The and pair has t…
Status of the PANDA Barrel DIRC
C. Schwarz, A. Ali, A. Belias +24
The PANDA experiment will use cooled antiproton beams with high intensity stored1 in the High Energy Storage Ring at FAIR. Reactions on a fixed target producing charmed hadrons wil…
Structure near ++ threshold in the in-flight He reaction
PARC E15 Collaboration, Y. Sada, S. Ajimura +69
To search for an S= -1 di-baryonic state which decays to , the reaction was studied at 1.0 GeV/. Unobserved neutrons were kinematically ide…
Measurement of the strong interaction induced shift and width of the 1s state of kaonic deuterium at J-PARC
J. Zmeskal, M. Sato, S. Ajimura +74
The antikaon-nucleon interaction close to threshold provides crucial information on the interplay between spontaneous and explicit chiral symmetry breaking in low-energy QCD. In th…
Search for η'(958)-nucleus bound states by (p,d) reaction at GSI and FAIR
H. Fujioka, Y. Ayyad, J. Benlliure +51
The mass of the η' meson is theoretically expected to be reduced at finite density, which indicates the existence of η'-nucleus bound states. To investigate these states, we perfor…
Near threshold angular distributions of the HX reaction
B. Beckford, P. Bydzovsky, A. Chiba +36
A study of the HX reaction was performed using a tagged photon beam at the Research Center for Electron Photon Science (ELPH), Tohoku University. The photoproduced w…
New Approaches for Improvement of TOF-PET
Stefan E. Brunner, Lukas Gruber, Johann Marton +2
We present results of simulations on the influence of photon propagation and the Cherenkov effect on the time resolution of LSO:Ce scintillators. The influence of the scintillator…
Efficiency and uniformity measurements of a light concentrator in combination with a SiPM array
Mariana Rihl, Stefan Enrico Brunner, Lukas Gruber +2
A position sensitive Cherenkov detector was built, consisting of 64 SiPMs with an active area of 3x3 mm^2 and a pixel size of 100x100 μm^2. The sensitive area is increased by a lig…
Measurement of the hyperfine structure of antihydrogen in a beam
E. Widmann, M. Diermaier, B. Juhasz +10
A measurement of the hyperfine structure of antihydrogen promises one of the best tests of CPT symmetry. We describe an experiment planned at the Antiproton Decelerator of CERN to…
Measurements of the photon induced production of in the HX process at threshold energies
B. Beckford, P. Bydzovsky, A. Chiba +38
An experiment was carried out with the NKS2+ in 2010 at the Research Center for Electron Photon Science (ELPH), in which tagged photon beams in the range of 0.8 1…
Spectroscopy of eta' mesic nuclei with (p,d) reaction
Yoshiki K. Tanaka, Stefan Friedrich, Hiroyuki Fujioka +15
We are going to perform an inclusive spectroscopy experiment of eta' mesic nuclei with the 12C(p,d) reaction to study in-medium properties of the eta' meson. In nuclear medium, the…
Spectroscopy of eta'-nucleus bound states at GSI-SIS
Hiroyuki Fujioka, Kenta Itahashi, Hans Geissel +14
The eta' meson mass may be reduced due to partial restoration of chiral symmetry. If this is the case, an eta'-nucleus system may form a nuclear bound state. We plan to carry out a…
The K1.8BR spectrometer system at J-PARC
Keizo Agari, Shuhei Ajimura, George Beer +81
A new spectrometer system was designed and constructed at the secondary beam line K1.8BR in the hadron hall of J-PARC to investigate interactions and -nuclear bo…
Report on strangeness photoproduction experiments performed with the Neutral Kaon Spectrometer 2
B. Beckford, A. Chiba, D. Doi +43
An experiment designed to investigate the strangeness photoproduction process using a tagged photon beam in the energy range of 0.90 -1.08 GeV incident on a liquid deuterium target…
Feasibility Study of Observing eta' Mesic Nuclei with (p,d) Reaction
Kenta Itahashi, Hiroyuki Fujioka, Hans Geissel +13
A novel method is proposed to measure eta'(958) meson bound states in 11C nuclei by missing mass spectroscopy of the 12C(p,d) reaction near the eta' production threshold. It is sho…
Application of Geiger-mode photo sensors in Cherenkov detectors
Gamal Ahmed, Paul Buehler, Michael Cargnelli +4
Silicon-based photosensors (SiPMs) working in the Geiger-mode represent an elegant solution for the readout of particle detectors working at low-light levels like Cherenkov detecto…
The PANDA GEM-based TPC Prototype
L. Fabbietti, H. Angerer, R. Beck +37
We report on the development of a GEM-based TPC prototype for the PANDA experiment. The design and requirements of this device will be illustrated, with particular emphasis on the…
Indication of a deeply bound compact K-pp state formed in the pp -> p Lambda K+ reaction at 2.85 GeV
T. Yamazaki, M. Maggiora, P. Kienle +34
We have analyzed data of the DISTO experiment on the exclusive pp -> p Lambda K+ reaction at 2.85 GeV to search for a strongly bound compact K-pp (= X) state to be formed in the pp…
Development of a GEM-TPC prototype
Heinz Angerer, Reinhard Beck, Martin Berger +37
The use of GEM foils for the amplification stage of a TPC instead of a con- ventional MWPC allows one to bypass the necessity of gating, as the backdrift is suppressed thanks to th…
Measurement of Branching Fractions for B->ππ, Kπand KK Decays
K. Abe
We report measurements of the branching fractions for , , and , and , , and . The results are…