Observation of Coulomb-assisted nuclear bound state of $��^-$-$^{14}$N system

In an emulsion-counter hybrid experiment performed at J-PARC, a $��^-$ absorption event was observed which decayed into twin single-$��$ hypernuclei. Kinematic calculations enabled a unique identification of the reaction process as $��^{-} + ^{14}$N$\ \rightarrow\ ^{10}_��$Be + $^5_��$He. For the binding energy of the $��^{-}$ hyperon in the $��^-$-$^{14}$N system a value of $1.27 \pm 0.21$ MeV was deduced. The energy level of $��^-$ is likely a nuclear $1p$ state which indicates a weak $��N$-$����$ coupling.

Present status and first results of the final focus beam line at the KEK Accelerator Test Facility

ATF2 is a final-focus test beam line which aims to focus the low emittance beam from the ATF damping ring to a vertical size of about 37 nm and to demonstrate nanometer level beam stability. Several advanced beam diagnostics and feedback tools are used. In December 2008, construction and installation were completed and beam commissioning started, supported by an international team of Asian, European, and U.S. scientists. The present status and first results are described.

The on-board calibration system of the X-ray Imaging Polarimetry Explorer (XIPE)

The calibration system for XIPE is aimed at providing a way to check and correct possible variations of performance of the Gas Pixel Detector during the three years of operation in orbit (plus two years of possible extended operation), while facilitating the observation of the celestial sources. This will be performed by using a filter wheel with a large heritage having a set of positions for the calibration and the observation systems. In particular, it will allow for correcting possible gain variation, for measuring the modulation factor using a polarized source, for removing non interesting bright sources in the field of view and for observing very bright celestial sources. The on-board …

Hypernuclear Spectroscopy at JLab Hall C

Abstract Since the 1st generation experiment, E89-009, which was successfully carried out as a pilot experiment of (e,e'K+) hypernuclear spectroscopy at JLab Hall C in 2000, precision hypernuclear spectroscopy by the (e,e'K+) reactions made considerable progress. It has evolved to the 2nd generation experiment, E01-011, in which a newly constructed high resolution kaon spectrometer (HKS) was installed and the “Tilt method” was adopted in order to suppress large electromagnetic background and to run with high luminosity. Preliminary high-resolution spectra of 7 Λ He and 28 Λ Al together with that of 12 Λ B that achieved resolution better than 500 keV(FWHM) were obtained. The third generation…

The HypHI Phase 0 experiment

10th International Conference on Hypernuclear and Strange Particle Physics -- SEP 14-18, 2009 -- Tokai, JAPAN

Multifrequency Studies of the Peculiar Quasar 4C +21.35 during the 2010 Flaring Activity

著者人数: 290名

J-PARC E07: Systematic Study of Double Strangeness System with Hybrid Emulsion Method

Hypernuclear production cross section in the reaction of 6Li + 12C at 2 A GeV

WOS: 000358624800021

Hypernuclear spectroscopy of products from Li-6 projectiles on a carbon target at 2 A GeV

WOS: 000322848900009

OUP accepted manuscript

Production of hypernuclei in peripheral HI collisions: The HypHI project at GSI

ECT Workshop on Strange Hadronic Matter -- SEP 26-30, 2011 -- Trento, ITALY

Observation of Coulomb-Assisted Nuclear Bound State of Ξ−–N14 System

In an emulsion-counter hybrid experiment performed at J-PARC, a Ξ^{-} absorption event was observed which decayed into twin single-Λ hypernuclei. Kinematic calculations enabled a unique identification of the reaction process as Ξ^{-}+^{14}N→_{Λ}^{10}Be+_{Λ}^{5}He. For the binding energy of the Ξ^{-} hyperon in the Ξ^{-}-^{14}N system a value of 1.27±0.21  MeV was deduced. The energy level of Ξ^{-} is likely a nuclear 1p state which indicates a weak ΞN-ΛΛ coupling.

Hypernuclear spectroscopy with heavy ion beams: The HypHI project at GSI and fair

The HypHI experiment for precise hypernuclear spectroscopy with induced reactions of stable heavy ion beams and rare isotope beams is currently under preparation at GSI. The main goal of the HypHI project is to study neutron and proton rich hypernuclei and to measure directly hypernuclear magnetic moments at GSI and FAIR. In the first HypHI experiment (Phase 0) planned in 2009, the feasibility of precise hypernuclear spectroscopy with heavy ion beams will be demonstrated by observing π- decay channels of [Formula: see text], [Formula: see text] and [Formula: see text] with 6 Li projectiles at 2 A GeV impinging on a 12 C target. An overview of the HypHI project and the details of the Phase …

Direct measurement of the W boson width

We present a direct measurement of the width of the W boson using the shape of the transverse mass distribution of W->enu candidates selected in 1 fb-1 of data collected with the D0 detector at the Fermilab Tevatron collider in ppbar collisions at sqrt{s}=1.96 TeV. We use the same methods and data sample that were used for our recently published W boson mass measurement, except for the modeling of the recoil, which is done with a new method based on a recoil library. Our result, 2.028 +- 0.072 GeV, is in agreement with the predictions of the standard model.

Observation of Coulomb-assisted nuclear bound state of $\Xi^-$-$^{14}$N system

In an emulsion-counter hybrid experiment performed at J-PARC, a $\Xi^-$ absorption event was observed which decayed into twin single-$\Lambda$ hypernuclei. Kinematic calculations enabled a unique identification of the reaction process as $\Xi^{-} + ^{14}$N$\ \rightarrow\ ^{10}_\Lambda$Be + $^5_\Lambda$He. For the binding energy of the $\Xi^{-}$ hyperon in the $\Xi^-$-$^{14}$N system a value of $1.27 \pm 0.21$ MeV was deduced. The energy level of $\Xi^-$ is likely a nuclear $1p$ state which indicates a weak ${\Xi}N$-$\Lambda\Lambda$ coupling.

CCDC 170823: Experimental Crystal Structure Determination

Related Article: S.Arndt, A.Trifonov, T.P.Spaniol, J.Okuda, M.Kitamura, T.Takahashi|2002|J.Organomet.Chem.|647|158|doi:10.1016/S0022-328X(01)01421-8

CCDC 170822: Experimental Crystal Structure Determination

Related Article: S.Arndt, A.Trifonov, T.P.Spaniol, J.Okuda, M.Kitamura, T.Takahashi|2002|J.Organomet.Chem.|647|158|doi:10.1016/S0022-328X(01)01421-8

CCDC 170821: Experimental Crystal Structure Determination

Related Article: S.Arndt, A.Trifonov, T.P.Spaniol, J.Okuda, M.Kitamura, T.Takahashi|2002|J.Organomet.Chem.|647|158|doi:10.1016/S0022-328X(01)01421-8

CCDC 170820: Experimental Crystal Structure Determination

Related Article: S.Arndt, A.Trifonov, T.P.Spaniol, J.Okuda, M.Kitamura, T.Takahashi|2002|J.Organomet.Chem.|647|158|doi:10.1016/S0022-328X(01)01421-8

CCDC 202192: Experimental Crystal Structure Determination

Related Article: T.P.Spaniol, J.Okuda, M.Kitamura, T.Takahashi|2003|J.Organomet.Chem.|684|194|doi:10.1016/S0022-328X(03)00525-4