(Co-)Spokespersons

Affiliation

Title of the experiment-Approval status (PAC recommendation)

Beamline

E03 K.Tanida

JAEA

Measurement of X rays from X Atom

Stage 2

K1.8

P04 J.C.Peng; S.Sawada

U of Illinois at UrbanaChampaign; KEK

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

DeferredPrimaryStage 2New experiment E70 based on the S-2S
spectrometer

K1.8

E36 as the first step

K1.1BR

Stage 2

K1.8

Stage 1K1.8

E05 T.Nagae

Kyoto U

E06 J.Imazato

KEK

E07

K.Imai, K.Nakazawa,
H.Tamura

E08 A.Krutenkova

Spectroscopic Study of X-Hypernucleus, 12XBe, via the 12C(K-,K+) Reaction
Measurement of T-violating Transverse Muon Polarization in K+0+-> p µ n Decays
Systematic Study of Double Strangeness System with an
JAEA, Gifu U, Tohoku U
Emulsion-counter Hybrid Method

StatusData taking

Finished

Finished
Data analysis

ITEPPion double charge exchange on oxygen at J-PARC

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 2

K1.8E11 K.Sakashita, K. Mahn

KEK, Michigan State U

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

Li run finished,
Be target runwith S-2S

Stage 2neutrino

Data taking

E13 H.Tamura

Tohoku U

Gamma-ray spectroscopy of light hypernuclei

Stage 2

K1.8

Finished

E14 T.Nomura

KEK0Proposal for KL -> p n n-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

Finished

E16 S.Yokkaichi

RIKEN

Stage 2 for Run 0
Measurements of spectral change of vector mesons in nuclei
Deferred for Run 1. PAC recommended(previously "Electron pair spectrometer at the J-PARC 50-GeV
High p101h+100h beam time for beam study &PS to explore the chiral symmetry in QCD")
trigger study.

E17 R.Hayano, H.Outa

U Tokyo, RIKEN

Precision spectroscopy of Kaonic 3He 3d->2p X-rays

E18 H.Bhang, H.Outa, H.Park SNU, RIKEN, KRISS
E19 M.Naruki

KEK

E21 Y.Kuno

Osaka U

E22 S.Ajimura, A.Sakaguchi

Osaka U

T25 S.Mihara

KEKCoincidence Measurement of the Weak Decay of 12LC and thethree-body weak interaction process+High-resolution Search for Q Pentaquark in p p -> K X
Reactions
An Experimental Search for μ − e Conversion at a Sensitivityof 10−16 with a Slow-Extracted Bunched Beam
Exclusive Study on the Lambda-N Weak Interaction in A=4
Lambda-Hypernuclei
Extinction Measurement of J-PARC Proton Beam at K1.8BR
A

Registered as E62 with an updated
proposal

K1.8BR

Stage 2

K1.8

Stage 2

K1.8

Stage 2COMET

Stage 1

K1.8

Test ExperimentK1.8BR

Stage 1

K1.8

Stage 2

K1.8

Data taking

Finished

Finished(A-Search for w-meson nuclear bound states in the p-+ Z -> n+
E26 K.Ozawa

KEK1)

w(Z-1) reaction, and for w mass modification in the in0

medium w->p g decay
E27 T.Nagae

Kyoto U-++Search for a nuclear Kbar bound state K pp in the d(p ，K )reaction

1/5

Fisnished(Co-)Spokespersons

Affiliation

Title of the experiment
Approval status (PAC recommendation)

Beamline

StatusStage 1

K1.1

Stage 2

K1.8BR

Finished
Data analysis
FinishedASearch for f-meson nuclear bound states in the pbar + Z -> f

E29 H.Ohnishi

RIKEN

E31 H.Noumi

Osaka U

T32 A.Rubbia

ETH, Zurich

Towards a Long Baseline Neutrino and Nucleon Decay
Experiment with a next-generation 100 kton Liquid Argon TPC

Test Experiment

K1.1BRP33 H.M.Shimizu

Nagoya U

Measurement of Neutron Electric Dipole Moment

DeferredLinac

E34 T. Mibe

KEK, RIKENAn Experimental Proposal on a New Measurement of the Muon
Anomalous Magnetic Moment g-2 and Electric Dipole Moment
at J-PARC

Stage 2MLF

E36 M.Kohl, S.Shimizu

Hampton U, Osaka U

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

Stage 2K1.1BR

Finished
Data analysis

E40 K.Miwa

Tohoku U

Measurement of the cross sections of Σp scatterings

Stage 2

K1.8

Finished
Data analysis

P41 M.Aoki

Osaka U

Deferred

MLF

Reviewed in
MLF/IMSS

E42 J.K.Ahn

Pusan National U

Stage 2

K1.8

Finished

K1.8+ (A-1) f(Z-1) reaction
Spectroscopic study of hyperon resonances below KN-,threshold via the (K n) reaction on Deuteron

An Experimental Search for μ − e Conversion in Nuclear Field−14at a Sensitivity of 10with Pulsed Proton Beam from RCS
Search for H-Dibaryon with a Large Acceptance Hyperon
Spectrometer

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 beamtime requested and to find an efficientrunning scheme, including quick but
careful beam tuning.

T46 K.Ozawa

KEKEDIT2013 beam test program

Test Experiment

K1.1BRAbandonded

T49 T.Maruyama

KEK

Test for 250L Liquid Argon TPC

Test Experiment

K1.1BR

Withdrawn

E50 H.Noumi

Osaka U

Stage 1The FIFC, IPNS, and E50 shouldHigh p*-Charmed Baryon Spectroscopy via the (π,D ) reaction

investigate the beam-line feasibility
T51 S.Mihara

KEK

T52 Y.Sugimoto

KEK

T53 D.Kawama

Research Proposal for COMET(E21) Calorimeter Prototype

had to be

Test Experiment

K1.1BR

Test of fine pixel CCDs for ILC vertex detector

Test Experiment

K1.1BR

RIKEN

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

Test Experiment

K1.1BRnot performed
yet

T54 K.Miwa

Tohoku U

Test experiment for a performance evaluation of a scatteredproton detector system for the Σp scattering experiment E40

Test Experiment

K1.1BRnot performed
yet

T55 A.Toyoda

KEK

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

K1.1BR

had to be
stopped

E56 T.Maruyama

KEK

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

MLF

Data taking

Beam Test

Stage 22/5

stoppednot performedyet(Co-)Spokespersons

Affiliation

Title of the experiment
Approval status (PAC recommendation)

E57 J. Zmeskal

Stefan Meyer Institutefor Subatomic Physics

P58 M. Yokoyama

U. Tokyo

T59 A. Minamino

Kyoto U

T60 T. Fukuda

Toho U

E61 M. Wilking
E62

R. Hayano, S. Okada, H.
Outa

Measurement of the strong interaction induced shift and width
Stage 1of the 1s state of kaonic deuterium at J-PARC
A Long Baseline Neutrino Oscillation Experiment Using J-PARCNeutrino Beam and Hyper-Kamiokande
A test experiment to measure neutrino cross sections using a
3D grid-like neutrino detector with a water target at the neardetector hall of J-PARC neutrino beam-line

Beamline

Status

K1.8BRin preparation

Deferredneutrino

To be arranged by IPNS and KEK-T2K

neutrino
monitor bld

Finished

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

Arranged by IPNS and KEK-T2K

neutrino
monitor bld

Finished

Stony Brook U

NuPRISM/TITUS

Superseded.
E61 has been adopted in Hyper-K as
IWCD.

neutrino

U. Tokyo, RIKEN

Precision Spectroscopy of kaonic atom X-rays with TES

Stage 2

K1.8BR

Finished

K1.1/K1.8

BL not readyyet. Exp. inpreparation
Finished

E63 H. Tamura

Tohoku U

Gamma-ray spectroscopy of light hypernuclei IIStage 2

T64 Y. Koshio

Okayama U

Measurement of the gamma-ray and neutron background from
Arranged by IPNS and KEK-T2K
the T2k neutrino/anti-neutrino at J-PARC B2 Hallneutrino

E65 K.Sakashita, K. Mahn

KEK, Michigan State U

Proposal for T2K Extended Run

Stage-2

neutrino

T66 T. Fukuda

Nagoya U

Test Experimentneutrino

P67 I. Meigo

JAEA

Carry out the experiment within theframework of facility development

MRT68 T. Fukuda

Nagoya U

Test Experimentneutrino

E69 A. Minamino

Yokohama National U

Superseded. Merged with T2K.

neutrino

E70 T. Nagae

Kyoto U

Proposal of an emulsion-based test experiment at J-PARC
Measurement of displacement cross section of proton inenergy region between 3 and 30 GeV for high-intensity proton
accelerator facility
Extension of T60/T66 Experiment: Proposal for the Run from2017 Autumn
Study of neutrino-nucleus ineraction at around 1GeV using
cuboid lattice neutrino detector, WAGASHI, muon range
Proposal for the next E05 run with the S-2S spectrometer

Stage-2

K1.8

E71 T. Fukuda

Nagoya U

Proposal for precise measurement of neutrinop-water crosssection in NINJA physics run

Stage-2neutrino

E72 K. Tanida

JAEA

Search for a Narrow Λ* Resonance using the p(K-, Λ)η Reaction
Stage-2
with the hypTPC Detector

K1.8BR

E73 Yue Ma

RIKEN

34
ΛH and ΛH mesonic weak decay lifetime measurementwith 3,4He(K-,π0)3,4ΛH reaction

Stage-2

K1.8BRP74 A.Feliciello

INFN, Torino

Direct measurement of the 3ΛH and 4ΛH lifetimes using the
3,4He(π-,K0)3,4ΛH reactions

Rejected

K1.1

E75 H.Fujioka

Tokyo Inst. Tech,P76 H.M.Shimizu

Nagoya U

T77 Yue Ma

RIKEN

Feasibility study for 3ΛH mesonic weak decay lifetime
measurement with 3,4He(K-,π0)3,4ΛH reaction

PAC supoorts the ontinuation of T77 by
an explorative run with the 3He target.

K1.8BR

Finished
Data analysis

T78 H.Nishiguchi

KEK

8GeV Operation Test and Extinction Measurement

Test Experiment

K1.8BR

Finished

Decay Pion Spectroscopy of 5ΛΛH Produced by Ξ-hypernuclear
Stage-2Decay
Searches for the Breaking of the Time Reversal Invariance inDeferred
Polarized Epithermal Neutron Optics

3/5

Finished

Finished

Data taking

K1.8
MLF

(Co-)Spokespersons
E79 T.Ishikawa

Affiliation
Tohoku U

Title of the experiment
Approval status (PAC recommendation)

Beamline

Search for an I=3 dibaryon resonanceStage-1

High p

E80 F.Sakuma

RIKEN

Systematic investgatin of the light kaonic nuclei

Stage-1
Deffered for Stage-2. TDR update based K1.8BR
on FIFC comments is necessary.

T81 T.Fukuda

Nagoya U

Proposal of test experiment for technical improvements ofneutrino measurements with nuclear emulsion detector

Test Experimentneutrino

E82 T.Maruyama

KEK

JSNS2-II

Stage-2

MLF

E83 J. H. YooKorea U

Search for sub-millicharged particles at J-PARC

Stage-2

neutrinoHigh precision spectroscopy of Lambda hypernuclei with the(\pi^+, K^+) reaction at the High Intensity High Resolution
beamline

Deferred.
This proposal is a part of the hadron
extension discussion and PAC awaits the HIHR
outcome of the special committee toconvene in August for more information.

P84 S. Nakamura

Tohoku U

P85 K. ShirotoriOsaka U (RCNP)

Spectroscopy of Omega Baryons

Deferred.
This proposal is a part of the hadron
extension discussion and PAC awaits the K10, T2 target
outcome of the special committee toconvene in August for more information.

E86 K. Miwa

Tohoku U

Measurement of the differential cross section and spin
observables of the Λp scattering with a polarized Λ beam

Stage 1

Tokyo,KEK,JAEA

Proposal for dielectron measurements in heavy-ion collisions
at J-PARC with E16 upgrades

Deferred.
PAC encourages the proponents to think
about more versatile detector enabling
HI, high-p(for example) concurrent measurementof leptonic and hadronic measurements.

JAEA

Study of in-medium modification of phi mesons inside thenucleus with phi->K+K- measurement with the E16
spectrometer

Stage-1high-p

K1.8BR

K1.8

P87

T. Gunji, K. Ozawa, H.
Sako

E88 H. Sako

K1.1

P89 T. Yamaga

RIKEN

Investigation of fundamental properties of the KNN state

Deferred.
PAC would like to see the detailed
feasibility of P89 after E80's TDR.

E90 Y.Ichikawa, K.Tanida

JAEA

High resolution spectroscopy of the "ΣN cusp" by using thed(K-, π-) reaction

Stage-1

P91 Y.Morino

KEK

Proposal for study of charm component in the nucleon via J/ψ
Deferred.
measurement with the J-PARC E16 spectrometerhigh-p

P92 F.Sakuma

RIKEN

Proposal for the E80 Phase-I Experiment:Investigation of theKNNN ¯ Bound State Focusing on the Λd Decay

Deferred.

K1.8BR

Osaka U (RCNP)

Proposal of test experiment to evaluate performances ofsecondary beam mode at the high-momentum beam line

Deferred.
PAC requests the proponent to continue
discussion with the Lab/Facilitymanagement

high-p

P93 K.Shirotori

4/5Status

(Co-)Spokespersons

E94 T.Gogami

Affiliation

Kyoto U

Title of the experiment
Approval status (PAC recommendation)

Beamline

New generation Λ hypernuclear spectroscopy with the (π+,K+) reaction by S-2S

Deferred for Stage-2. It is necessary tosubmit an updated TDR to FIFC.

K1.8

P95 T.Ishikawa

Tohoku U

Pion-induced phi-meson production on the proton

Deferred.
PAC asks the proponents to clarify
physics goal, role of the experiment, and high-ppaths toward the goal with help oftheorists.

E96 T.O.Yamamoto

JAEA

Measurement of X rays from Ξ- C atom with an active fiber
target system

Stage-2

K1.8

E97 M.Naruki

Kyoto U

Cascade baryon spectroscopy at J-PARC high-momentum
beamline

Stage-1high-pWaseda U

Measurement of Anti-Matter Reaction in Liquid Argon Time
Projection Chamber

Test-experiment. PAC recommends
approval of phase-2 for 24 hours ofK1.8BR

T98 K.Yorita

beam time

P99 H. Shimizu

Nagoya U

Deferred.
Study of Discrete Symmetries in Polarized Epithermal Neutron
PAC requests the expert panel toOptics
continue to work with the proponents.

P100 K. Mishima

KEKFundamental Physics with Pulsed Cold Neutrons

Deferred.
Further investigations are required. PAC
requests an updated proposal.

MLF

T101 H. Ito

Tokyo U of Science

Measurement of neutrino-induced neutron and γ-ray
background for BGO-based detectors at J-PARC

Test Experimentneutrino

Study of the peculair bump structure at 1680 MeV by the π-p→ηn reaction with momenta of p_π=0.85-1.2 GeV/c

Deferred.
The proponents should clarify theadvantages of the proposed
measurement over the oldmeasurements. Further considerations
regarding experimental setup and morerealistic simulations are necessary.

K1.8

PAC37 discussion

PAC37 judgement

P102 H. Kohri

Stage1/2 granted
Approved test exp.

Osaka U (RCNP)

finished or not considered to be done in near future

5/5

MLF

Status