High Energy Accelerator Research Organization

output

19912026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2017 · nucl-exShow all

23 papers · 2 filters

nucl-ex2017★ 19 cited

First Determination of Level Structure of an $s d$ -Shell Hypernucleus, $_{Λ}^{19} F$

S. B. Yang, J. K. Ahn, Y. Akazawa +45

We report on the first observation of $γ$ rays emitted from an $s d$ -shell hypernucleus, $_{Λ}^{19} F$ . The energy spacing between the ground state doublet, $1/ 2^{+}$ and $3/ 2^{+}$ …

nucl-ex2017★ 46 cited

A Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam

Christopher C. Haddock, Noriko Oi, Katsuya Hirota +8

We describe an experimental search for deviations from the inverse square law of gravity at the nanometer length scale using neutron scattering from noble gases on a pulsed slow ne…

nucl-ex2017★ 21 cited

Photoproduction of $Λ$ and $Σ^{0}$ hyperons off protons with linearly polarized photons at $E_{γ} = 1.5 - 3.0$ GeV

S. H. Shiu, H. Kohri, W. C. Chang +42

We report the measurement of the $γ p \to K^{+} Λ$ and $γ p \to K^{+} Σ^{0}$ reactions at SPring-8. The differential cross sections and photon-beam asymmetries are meas…

nucl-ex2017★ 17 cited

First measurement of coherent $ϕ$ -meson photoproduction from helium-4 near threshold

LEPS Collaboration, T. Hiraiwa, M. Yosoi +42

The differential cross sections and decay angular distributions for coherent $ϕ$ -meson photoproduction from helium-4 have been measured for the first time at forward angles with li…

nucl-ex2017★ 35 cited

Measurements of mass-dependent azimuthal anisotropy in central $p$ $+$ Au, $d$ $+$ Au, and $^{3}$ He $+$ Au collisions at $s_{_{N N}} = 200$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +349

We present measurements of the transverse-momentum dependence of elliptic flow $v_{2}$ for identified pions and (anti)protons at midrapidity ( $∣ η ∣ < 0.35$ ), in 0%--5% central $p$ $+$ Au…

nucl-ex2017★ 17 cited

$ϕ$ photoproduction on the proton at $E_{γ}$ = 1.5 - 2.9 GeV

K. Mizutani, M. Niiyama, T. Nakano +53

Differential cross sections at $t = t_{min}$ and decay asymmetries for the $γ p \to ϕp$ reaction have been measured using linearly polarized photons in the range 1.5 to 2…

nucl-ex2017★ 73 cited

First direct mass measurements of nuclides around $Z = 100$ with a Multireflection Time-of-Flight Mass Spectrograph

Y. Ito, P. Schury, M. Wada +23

The masses of $^{246}$ Es, $^{251}$ Fm and the transfermium nuclei $^{249 - 252}$ Md, and $^{254}$ No, produced by hot- and cold-fusion reactions, in the vicinity of the deformed $N = 152$ …

nucl-ex2017★ 53 cited

Lévy-stable two-pion Bose-Einstein correlations in $s_{_{N N}} = 200$ GeV Au $+$ Au collisions

A. Adare, C. Aidala, N. N. Ajitanand +444

We present a detailed measurement of charged two-pion correlation functions in 0%-30% centrality $s_{_{N N}} = 200$ GeV Au $+$ Au collisions by the PHENIX experiment at the Relat…

nucl-ex2017★ 2 cited

Spin dependence of η meson production in proton-proton collisions close to threshold

P. Adlarson, W. Augustyniak, W. Bardan +88

Taking advantage of the high acceptance and axial symmetry of the WASA-at-COSY detector, and the high degree of the polarized proton beam of COSY, the reaction pp{\to} ppη has been…

nucl-ex2017★ 100 cited

Measurement of quarkonium production in proton--lead and proton--proton collisions at $5.02$ $TeV$ with the ATLAS detector

ATLAS Collaboration

The modification of the production of $J / ψ$ , $ψ (2S)$ , and $\mitΥ(n\mathrm{S})$ ( $n = 1, 2, 3$ ) in $p$ +Pb collisions with respect to their production in $pp$ collisions has…

nucl-ex2017★ 98 cited

Measurement of longitudinal flow de-correlations in Pb+Pb collisions at $s_{NN} = 2.76$ and 5.02 TeV with the ATLAS detector

ATLAS Collaboration

Measurements of longitudinal flow decorrelations are presented for charged particles in the pseudorapidity range $∣ η ∣ < 2.4$ using 7 $μ$ b $^{- 1}$ and 470 $μ$ b $^{- 1}$ of Pb+Pb collisio…

nucl-ex2017★ 3 cited

Importance of d-wave contributions in the charge symmetry breaking reaction $dd \to^{4} He π^{0}$

P. Adlarson, W. Augustyniak, W. Bardan +89

This letter reports a first quantitative analysis of the contribution of higher partial waves in the charge symmetry breaking reaction $dd \to^{4} He π^{0}$ using the WASA-at-C…

nucl-ex2017★ 43 cited

Halo-induced large enhancement of soft dipole excitation of 11Li observed via proton inelastic scattering

Junki Tanaka

Proton inelastic scattering off a neutron halo nucleus, 11Li, has been studied in inverse kinematics at the IRIS facility at TRIUMF. The aim was to establish a soft dipole resonanc…

nucl-ex2017★ 12 cited

Differential cross section and photon beam asymmetry for the gamma p -> pi+ n reaction at forward pi+ angles at Egamma=1.5-2.95 GeV

H. Kohri, S. Y. Wang, S. H. Shiu +46

Differential cross sections and photon beam asymmetries for the gamma p -> pi+ n reaction have been measured for 0.6<cos(theta)<1 and Egamma=1.5-2.95 GeV at SPring-8/LEPS. The cros…

nucl-ex2017★ 50 cited

Measurements of azimuthal anisotropy and charged-particle multiplicity in $d$ $+$ Au collisions at $s_{_{N N}} =$ 200, 62.4, 39, and 19.6 GeV

C. Aidala, Y. Akiba, M. Alfred +243

We present measurements of the elliptic flow, $v_{2}$ , as a function of transverse momentum ( $p_{T}$ ), pseudorapidity ( $η$ ), and centrality in $d$ $+$ Au collisions at $\sqrt{s_{_{NN}}}=…

nucl-ex2017★ 72 cited

Measurements of multiparticle correlations in $d$ $+$ Au collisions at 200, 62.4, 39, and 19.6 GeV and $p$ $+$ Au collisions at 200 GeV and implications for collective behavior

C. Aidala, Y. Akiba, M. Alfred +314

Recently, multiparticle-correlation measurements of relativistic $p / d /^{3}$ He $+$ Au, $p$ $+$ Pb, and even $p$ $+$ $p$ collisions have shown surprising collective signatures. Here we prese…

nucl-ex2017★ 25 cited

Atomic masses of intermediate-mass neutron-deficient nuclei with relative uncertainty down to 35-ppb via multireflection time-of-flight mass spectrograph

S. Kimura, Y. Ito, D. Kaji +18

High-precision mass measurements of $^{63}$ Cu, $^{64 - 66}$ Zn, $^{65}$ Ga, $^{65 - 67}$ Ge, $^{67}$ As, $^{78, 81}$ Br, $^{80}$ Rb, and $^{79}$ Sr were performed utilizing a multireflection t…

nucl-ex2017★ 29 cited

The nuclear force imprints revealed on the elastic scattering of protons with $^{10}$ C

A. Kumar, R. Kanungo, A. Calci +26

How does nature hold together protons and neutrons to form the wide variety of complex nuclei in the universe? Describing many-nucleon systems from the fundamental theory of quantu…

nucl-ex2017★ 35 cited

Missing-mass spectroscopy of the $^{12} C (p, d)$ reaction near the $η^{'}$ -meson production threshold

Y. K. Tanaka, K. Itahashi, H. Fujioka +51

Excitation-energy spectra of $^{11}$ C nuclei near the $η^{'}$ -meson production threshold have been measured by missing-mass spectroscopy using the $^{12}$ C( $p$ , $d$ ) reaction. A…

nucl-ex2017

A new measurement of electron transverse polarization in polarized nuclear beta decay

H. Kawamura, T. Akiyama, M. Hata +20

The Mott polarimetry for T -Violation (MTV) experiment tests time-reversal symmetry in polarized nuclear beta decay by measuring an electron's transverse polarization as a form of…

nucl-ex2017★ 18 cited

Missing-mass spectroscopy with the $^{6}$ Li( $π^{-}, K^{+}$ )X reaction to search for $_{Λ}^{6}$ H

R. Honda, M. Agnello, J. K. Ahn +63

We searched for the bound state of the neutron-rich $Λ$ -hypernucleus $_{Λ}^{6}$ H, using the $^{6}$ Li( $π^{-}, K^{+}$ )X double charge-exchange reaction at a $π^{-}$ beam momentum o…

nucl-ex2017★ 11 cited

B-meson production at forward and backward rapidity in $p$ + $p$ and Cu+Au collisions at $s_{_{N N}}$ =200 GeV

C. Aidala, N. N. Ajitanand, Y. Akiba +456

The fraction of $J / ψ$ mesons which come from B-meson decay, $F_{B \to J / ψ}$ , is measured for J/ $ψ$ rapidity \mbox{ $1.2 < ∣ y ∣ < 2.2$ } and $p_{T} > 0$ in $p$ + $p$ and Cu+Au c…

nucl-ex2017★ 15 cited

Measurements of $e^{+} e^{-}$ pairs from open heavy flavor in $p$ + $p$ and $d$ + $A$ collisions at $s_{N N} = 200$ GeV

A. Adare, S. Afanasiev, C. Aidala +505

We report a measurement of $e^{+} e^{-}$ pairs from semileptonic heavy-flavor decays in $p$ + $p$ collisions at $s_{N N} = 200$ ~GeV. The $e^{+} e^{-}$ pair yield from $b b ˉ$ and $c\bar…

First Determination of Level Structure of an sd-Shell Hypernucleus, Λ19​F

A Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam

Photoproduction of Λ and Σ0 hyperons off protons with linearly polarized photons at Eγ​=1.5−3.0 GeV

First measurement of coherent ϕ-meson photoproduction from helium-4 near threshold

Measurements of mass-dependent azimuthal anisotropy in central p+Au, d+Au, and 3He+Au collisions at sNN​​​=200 GeV

ϕ photoproduction on the proton at Eγ​ = 1.5 - 2.9 GeV

First direct mass measurements of nuclides around Z=100 with a Multireflection Time-of-Flight Mass Spectrograph

Lévy-stable two-pion Bose-Einstein correlations in sNN​​​=200 GeV Au+Au collisions

Spin dependence of η meson production in proton-proton collisions close to threshold

Measurement of quarkonium production in proton--lead and proton--proton collisions at 5.02 TeV with the ATLAS detector

Measurement of longitudinal flow de-correlations in Pb+Pb collisions at sNN​​=2.76 and 5.02 TeV with the ATLAS detector

Importance of d-wave contributions in the charge symmetry breaking reaction dd→4Heπ0