From 2018(Co-)Spokespersons

Affiliation

Title of the experiment
Approval status (PAC recommendation) Beamline

E03 K.Tanida

JAEA

Measurement of X rays from Ξ Atom

P04 J.C.Peng; S.Sawada

U of Illinois at UrbanaChampaign; KEK

Measurement of High-Mass Dimuon Production at the 50-GeV
DeferredProton Synchrotron

E05 T.Nagae

Kyoto U

E06 J.Imazato

KEK

E07

K.Imai, K.Nakazawa,
H.Tamura

E08 A.Krutenkova

JAEA, Gifu U, Tohoku UStage 2−

Spectroscopic Study of Ξ-Hypernucleus, 12ΞBe, via the 12C(K-,K+) Reaction
Measurement of T-violating Transverse Muon Polarization in+0+K -> π µ ν Decays
Systematic Study of Double Strangeness System with anEmulsion-counter Hybrid Method

K1.8

Leading Referees

StatusIn preparation Weise, Aoi, Zajc, Kitano

Stage 2New experiment E70 based on the S-2Sspectrometer

K1.8

E36 as the first step

K1.1BR

Stage 2

K1.8

Stage 1

K1.8

Finished
Data analysis

Weise, Pochodzalla, Hanagaki

E10 A.Sakaguchi, T.Fukuda

Osaka U, Osaka EC U

Production of Neutron-Rich Lambda-Hypernuclei with theDouble Charge-Exchange Reaction (Revised from Initial P10)

Stage 2K1.8

Li run finished,
Be target run Weise, Tamura, Zajc
with S-2S

E11 T. Nakaya, M. Wascho

KEK

Tokai-to-Kamioka (T2K) Long Baseline Neutrino Oscillation
Experimental Proposal

Stage 2neutrino

Data taking

E13 H.Tamura

Tohoku U

Gamma-ray spectroscopy of light hypernuclei

Stage 2

K1.8

Finished

E14 T.Yamanaka

Osaka U

Proposal for KL -> π ν ν-bar Experiment at J-PARC

Stage 2KL

Data taking

E15 M.Iwasaki, T.Nagae

RIKEN, Kyoto U

A Search for deeply-bound kaonic nuclear states by in-flight
3He(K-, n) reaction

Stage 2K1.8BR

Data taking

E16 S.Yokkaichi

RIKEN

Measurements of spectral change of vector mesons in nuclei(previously "Electron pair spectrometer at the J-PARC 50-GeV Stage 2 for Run 0
PS to explore the chiral symmetry in QCD")U Tokyo, RIKEN

E18 H.Bhang, H.Outa, H.Park SNU, RIKEN, KRISS

3Precision spectroscopy of Kaonic He 3d->2p X-rays
Coincidence Measurement of the Weak Decay of12ΛC and thethree-body weak interaction process+High-resolution Search for Θ Pentaquark in π p -> K X
Reactions

K1.8BR

Stage 2K1.8

Stage 2

K1.8

KEK

E21 Y.Kuno

Osaka U

E22 S.Ajimura, A.Sakaguchi

Osaka U

Exclusive Study on the Lambda-N Weak Interaction in A=4
Lambda-Hypernuclei

Stage 1

K1.8

T25 S.Mihara

KEKExtinction Measurement of J-PARC Proton Beam at K1.8BR

Test Experiment(coord'ed by JPNC)

K1.8BR

E26 K.Ozawa

KEK

Stage 1

K1.8

An Experimental Search for μ − e Conversion at a Sensitivity

A

Search for ω-meson nuclear bound states in the π-+ Z -> n+

E27 T.Nagae

Kyoto U

E29 H.Ohnishi

RIKEN

E31 H.NoumiOsaka U1)
ω(A-(Z-1) reaction, and for ω mass modification in the in-Spectroscopic study of hyperon resonances below KN

Stage 2KEK, RIKEN

E36 M.Kohl, S.Shimizu

Hampton U, Osaka U

Measurement of Γ(K -> e ν)/Γ(K -> µ ν) and Search forheavy sterile neutrinos using the TREK detector system

Stage 2K1.1BR

E40 K.MiwaTohoku U

Measurement of the cross sections of Σp scatterings

Stage 2

K1.8

Deferred

MLF

Search for H-Dibaryon with a Large Acceptance Hyperon
Spectrometer

Stage 2Commissioning and physics run plan tobe submittedK1.8

P41 M.Aoki
E42 J.K.AhnOsaka UPusan National U+++An Experimental Search for μ − e Conversion in Nuclear Field
at a Sensitivity of 10−14 with Pulsed Proton Beam from RCS

Weise, Aoi, Kuze, Ohnishi
Tamura, Zajc, Ohnishi

Linac

E34 T. Mibe+

Fisnished

DeferredStage 2An Experimental Proposal on a New Measurement of the Muon
PAC suggests that g-2 work with Lab
Anomalous Magnetic Moment g-2 and Electric Dipole Moment
MLF
management to refine the cost estimate
at J-PARCand schedule.

Weise, Tamura, Pochodzalla, OhnishiTo be discussed later
Harris, Kettel, Yoshida, Hanagaki,
KitanoItow, Blanke, Le Diberder, Harris,Kettell, Kitano

Finished
Data analysis

Browder, Kettell, Yoshida, Eidelman

Blanke, Le Diberder, Kettell

Data taking

Kettel, Kuze, Ohnishi, Zajc

Xu, Kettell, Kuze, Ohnishi

Reviewed in
MLF/IMSS
Kuze, Ohnishi, Hanagaki

E45 K.H.Hicks, H.Sako

Ohio U, JAEA

3-Body Hadronic Reactions for New Aspects of Baryon
Spectroscopy

Stage 2
PAC requests that the group further examine
ways to reduce the total beam time requested
K1.8
and to find an efficient running scheme, including
quick but careful beam tuning.

T46 K.Ozawa

KEKEDIT2013 beam test program

Test Experiment

K1.1BR

Abandonded

T49 T.Maruyama

KEK

Test for 250L Liquid Argon TPC

Test Experiment

K1.1BR

WithdrawnHigh pTamura, Kuze

E50 H.Noumi

Osaka U

Charmed	  Baryon	  Spectroscopy	  via	  the	  (π,D*-­‐)	  reaction

Stage 1The FIFC, IPNS, and E50 should
investigate the beam-line feasibility

T51 S.Mihara

KEK

Research Proposal for COMET(E21) Calorimeter Prototype
Beam Test

Test Experiment

K1.1BR

T52 Y.Sugimoto

KEK

Test of fine pixel CCDs for ILC vertex detector

Test Experiment

K1.1BRT53 D.Kawama

RIKEN

Test Experiment

K1.1BR

T54 K.Miwa

Tohoku U

Test experiment for a performance evaluation of a scattered
Test Experiment
proton detector system for the Σp scattering experiment E40

K1.1BRnot performed
yet

T55 A.Toyoda

KEK

Second Test of Aerogel Cherenkov counter for the J-PARC
E36 experiment

Test Experiment

K1.1BR

had to bestopped

E56 T.Maruyama

KEK

A Search for Sterile Neutrino at J-PARC Materials and Life
Science Experimental Facility

Stage 2

MLFStefan Meyer Institute

Measurement of the strong interaction induced shift andfor Subatomic Physics

width of the 1s state of kaonic deuterium at J-PARC

Stage 1
Beam time for the pilot run to beallocated.

K1.8BR

U. Tokyo

A Long Baseline Neutrino Oscillation Experiment Using J-PARC
Deferred
Neutrino Beam and Hyper-Kamiokande

neutrino

T59 A. Minamino

Kyoto UA test experiment to measure neutrino cross sections using a
3D grid-like neutrino detector with a water target at the near To be arranged by IPNS and KEK-T2K
detector hall of J-PARC neutrino beam-line

neutrino
monitor bld

T60 T. Fukuda

Toho U

Proposal of an emulsion-based test experiment at J-PARC

Arranged by IPNS and KEK-T2K

Stony Brook U

NuPRISM/TITUS

Stage 1
PAC encourages E61 to continue site
survey and design work.

neutrino

U. Tokyo, RIKEN

Precision Spectroscopy of kaonic atom X-rays with TES

Stage 2

K1.8BR

Finished

Ohnishi, Aoi, Hanagaki, Kuze

Tohoku U

Gamma-ray spectroscopy of light hypernuclei IIStage 2

K1.1

BL not readyyet. Exp. inWeise, Pochodzalla, Ohnishi, Aoi

T64 Y. Koshio

Okayama U

Measurement of the gamma-ray and neutron backgroundfrom the T2k neutrino/anti-neutrino at J-PARC B2 Hall

Arranged by IPNS and KEK-T2K

neutrino

Discussion in the sub-committee

E65 T. Nakaya

Kyoto U

Proposal for T2K Extended Run

Stage 1

neutrino

Harris, Kettell, Yoshida, Kitano

T66 T. Fukuda

Nagoya U

Proposal of an emulsion-based test experiment at J-PARC

Test Experimentneutrino

Dicussion by direttors

Carry out the experiment within theframework of facility developmentMR

Discussion in progressneutrino

Discussion in the sub-committee

Stage 2neutrino

Harris, Kettell, Yoshida, Kitano

E57 J. Zmeskal

P58 M. Yokoyama

E61 M. Wilking
E62R. Hayano, S. Okada, H.
Outa

E63 H. Tamura

Test of GEM Tracker, Hadron Blind Detector and Lead-glass
EMC for the J-PARC E16 experiment

Measurement of displacement cross section of proton in
P67 I. Meigo

JAEA

T68 T. Fukuda

Nagoya U

energy region between 3 and 30 GeV for high-intensity
proton accelerator facility

Extension of T60/T66 Experiment: Proposal for the Run from
Test Experiment2017 Autumn
Study of neutrino-nucleus ineraction at around 1GeV using
cuboid lattice neutrino detector, WAGASHI, muon range

neutrinomonitor bld

had to bestopped
not performedyet
not performed
yetKuze, Yoshida, Kettell, Eidelman, Kitano

in preparation Pochodzalla, Aoi, Ohnishi, Zajc

Finished

Harris, Kettell, Yoshida, Kitano

Kyoto U

Proposal for the next E05 run with the S-2S spectrometer

Stage 1
Encourage to submit a TDR

K1.8

Weise, Tamura, Zajc

E71 T. Fukuda

Nagoya U

Proposal for precise measurement of neutrinop-water crosssection in NINJA physics runStage-2 approval if the NINJA
collaboration is able to reasonably
address the PAC concerns

neutrino

Harris, Kettell, Yoshida, Kitano

E72 K. Tanida

JAEA

Search for a Narrow Λ* Resonance using the p(K-, Λ)η
Reaction with the hypTPC Detector

K1.8BR

Yoshida, Browder, Kettel, Ohnishi,
Eidelman

P73 Yue Ma

RIKEN

Stage1/2 granted
Approved test exp.

ΛH	  and	  4ΛH	  mesonic	  weak	  decay	  lifetime	  measurementwith	  3,4He(K-­‐,π0)3,4ΛH	  reaction
PAC26 presentation

Xu, Pochodzalla, Aoi, Ohnishi

Finished

E70 T. Nagae3Blanke, Le Diberder , Kuze, Kettell,
KitanoHarris, Yoshida, Hanagaki

Yokohama National U

Stage 1
Encourage to submit a TDR and toanalyze Belle data further
Deferred
PAC encourages the P73 collaboration

Thomas, Xu, Tamura, Kuze

Yoshida, Browder, Kettel, Ohnishi,Eidelman

E69 A. Minamino

detectors and magnetized spectrometer, Baby MIND, at JPARC neutrino monitor hall

Adachi, Le Diberder, Harris, Kitano,Tamura, Ohnishi, Eidelman

Finished

Measurement of Neutron Electric Dipole Moment

Thomas, Adachi, Pochadzalla, Ohnishi

Weise, Tamura, Zajc

K1.1BRNagoya U

Weise,Pochodzalla, Ohnishi, Eidelman

Finished

Test Experiment

P33 H.M.Shimizu

Experiment with a next-generation 100 kton Liquid Argon TPC

Adachi, Blanke, Kuze, Kettell, Kitano

Harris,Kitano, Browder, Yoshida,

Finished
Data analysis

ETH, Zurich

Kuze, Kettell, Kitano, Yoshida,
HanagakiEidelman

K1.1

T32 A.Rubbia

Itow, Harris, Kettell, Kitano

Weise, Tamura, Zajc

K1.8BR-,

threshold via the (K n) reaction on DeuteronTowards a Long Baseline Neutrino and Nucleon Decay

K1.8

Harris, Kettell, Yoshida, KitanoFinished

Phase-I Stage 2
Engineering desing and operation plan to COMET
be presented.

medium ω->π0γ decay+ +Search for a nuclear Kbar bound state K pp in the d(π ，K )Stage 2reaction
ASearch for φ-meson nuclear bound states in the pbar + Z -> φStage 1(A-1)+φ(Z-1) reaction

Thomas, Itow, Pochodzalla

Weise, Aoi, Zajc

High pRegistered as E62 with an updated
proposal

E19 M.Narukiof 10−16 with a Slow-Extracted Bunched BeamThomas, Xu, Aoi,Kitano

Finished

Pion double charge exchange on oxygen at J-PARC

E17 R.Hayano, H.Outa

New Leading referees

Primary

ITEP0

From 2018 July

Itow,Adachi, Harris, Kettell, Kitano

Itow, Harris, Kettell, Kitano

Thomas, Pochodzalla, Aoi

to submit an updated proposal
PAC26 judgement

finished or not considered to be done in near future

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