E68(P-bar PC) M.Kobayashi :

Detection of Discrete γ and π0 from p-bar p System

 

Submitted

1979.3.31

Approved

1980.10.14

Beam line

πμ

Shift requested

150

Shift executed

165.2

Executed cycles

82[6,7,8], 83[10.11.12.13], 84[1,2,3]

 

 

Papers and activities

 

[Legend]

Physics papers published in refereed journal

Technical papers

PhD theses

Conference and Symposium

Internal Report and others

 

● M. Chiba et al.

 

Search for Narrow States by Detection of Monochromatic Gamma Rays in p-bar p Annihilation at Rest

 

Phys.Lett.B177 (1986) 217.

● M. Chiba et al.

 

Search for Narrow States by Detection of Monochromatic Gamma Rays in p-bar p Annihilation at Rest

 

Phys.Rev. D36 (1987) 3321.

● M. Chiba et al.

 

Search for Narrow Peaks in Inclusive π0 Spectra from p-bar p Annihilation at Rest

 

Phys.Lett.B202 (1988) 447.

● M. Chiba et al.

 

Antiproton-Proton Annihilation at Rest into π0 M and γ M with M= ϕ, η', ω, ρ0, η, and π0

 

Phys.Rev. D38 (1988) 2021.

● M. Chiba et al.

 

η and η' Production in p-bar p Annihilation at Rest

 

Phys. Rev. D39 (1989) 3227.

● M. Chiba et al.

 

Measurement of γ rays from Antiproton-Deuterium Annihilation at Rest

 

Phys.Rev.D44 (1991) 1933.

○ M. Kobayashi et al.

 

Performance of a Scintillator Glass Shower Detector for 20-120 MeV Electrons

 

Nucl. Instr. Meth. 184 (1981) 399.                                                        

○ M. Kobayashi et al.

 

A Bismuth Germanate Scintillator as a Total Absorption Shower Detector

 

Nucl. Instr.Meth. 184 (1981) 629.

○ M. Kobayashi et al.

 

Improvement of the Longitudinal Uniformity in the Response of Long BGO Detectors

 

Nucl. Instr. Meth. 222(1984) 458.

○ M. Kobayashi et al.

 

An NaI(Tl)-241 Am High Reliability, Constant Amplitude Light Pulser

 

Nucl. Instr. Meth. 189 (1981) 625.

○ M. Chiba et al.

 

A Shower Detector of an Improved Scintillator Glass and Its Longitudinal Response

 

Nucl. Instr. Meth. 190 (1981) 15.

○ M. Kobayashi et al.

 

Performance of a Scintillator Glass Shower Detector  for Low Energy Electrons

 

Nucl. Instr. Meth. 196(1982) 239.

○ M. Kobayashi et al.

 

A NaI(Tl)-241 Am Light Pulser of Increased Reliability by Eliminating Epoxy Sealing

 

Nucl. Instr. Meth. 224 (1984) 318.

○ M. Chiba et al.

 

Performance of a Scintillator Glass Calorimeter for 10.0-84.3 MeV Photons

 

Nucl. Instr. Meth. A234 (1985) 267.

○ M. Kobayashi et al.

 

Liquid Hydrogen and Deuterium Target for Antiproton Annihilation at Rest

 

Japan. J.Appl.Phys.24 (1985) 593.

○ M. Kobayashi et al.

 

Modularized NaI(Tl) Detectors in a Half Barrel Configuration

 

Nucl. Instr. Meth. A245 (1986) 59.

○ M. Kobayashi et al.

 

Self-Supporting Cylindrical Μultiwire Proportional Chambers with Two Dimensional Read-out

 

Nucl. Instr. Meth. A245 (1986) 51.

○ M. Chiba et al.

 

A Large Silicon Detector to Measure the Antiproton Range in a Liquid Hydrogen Target

 

Nucl. Instr. Meth. A276 (1989) 122.

○ M. Takasaki et al.

 

The Low Energy Antiproton Beam K4 at the KEK 12 GeV Proton Synchrotron

 

Nucl. Instr. Meth. A242 (1986 201.

★ T. Ohmori

 

A Search for a Baryonium in p-bar p Annihilation at Rest

 

KEK Report 89-1, April, 1989, H.

◇ M. Kobayashi et al.

 

An NaI(Tl)-241 Am Light Pulser for GA in Monitor of Photomultiplier Tubes

 

Proc. 1981 INS Int'l Symp. on Nuclear Radiation Detectors,Mar.23-26,1981,Tokyo.

◇ K. Doi et al.

 

Test of BGO-Bars for Electromagnetic Shower Calorimeters

 

Proc. Int'l Workshop on BGŌ, Princeton, Nov.1982, p.568

◇ S. Kurokawa et al.

 

Characteristics of a Low-Energy Antiproton Beam K4

 

5th Symp. on Accelerator Science and Technology, KEK, September 1984

◇ F. Takeuchi

 

A p-bar p Experiment and K4 Beam Line at KEK

 

Proc.KEK Int'l Workshop  on Nuclear Physics in GeV Region. KEK, Nov. 13-15, 1984

◇ M. Kobayashi et al.

 

Search for Baryonium by Exclusive Measurement of γ Rays and π0 in p-bar p Annihilation at Rest

 

Proc. Meeting on Hadron Spectroscopy, KEK, Feb. 5-6,1985, KEK-Report 85-14, 1986

◇ M. Kobayashi and H. Yoshida

 

Investigation of Jpc=1–+ Hybrid States in p-bar p Annihilation at Rest

 

Proc. Meeting on Hadron Spectroscopy, KEK, Feb. 5-6,1985, KEK-Report 85-14, 1986

◇ M. Kobayashi (for E68)

 

Search for Monochromatic Gamma Rays in p-bar p Annihilation at Rest

 

Proc. Meeting on Few-Body Problems in High and Medium Energy Physics, KEK, Oct.3-5, 1985

◇ F. Takeuchi

 

A Baryonium Search at KEK

 

INS Int'l Symp. on Hypernuclear Physics, August 20-23, 1986, Tokyo

◇ M. Chiba et al.

 

Search for Monochromatic Photon Emission from p-bar p Annihilation at Rest

 

The 11th Int'l Conf. on Few Body Systems in Particle and Nucl. Phys. August 24-30, 1986, Tokyo and Sendai, Japan

◇ M. Kobayashi

 

Search for Baryonia  and Meson Spectroscopy in p-bar p at Rest

 

Presented at the Meeting on Hadron Spectroscopy held at KEK on Jan.8-9, 1987, KEK Report 86-13

◇ M. Chiba et al.

 

Further Results on Narrow States Related to p-bar p Below Threshold

 

- Search for Narrow States with Various Decay Topologies - Proc.2nd Int'l Conf. on Hadron Spectroscopy, Tsukuba, 1987

◇ M. Chiba et al.

 

η,η' Production in p-bar p Annihilation at Rest

 

Proc.2nd Int'l Conf. on Hadron Spectroscopy, Tsukuba, 1987

◇ M. Chiba et al.

 

p-bar p Annihilation at Rest into Neutral Mesons

 

4th LEAR WS held at Villars-sur-011 on, Switzerland, Sept.6-13, 1987

◇ M. Kobayashi et al.

 

Search for Narrow States in the Inclusive γ-Ray Spectra from Antiproton-Deuterium Annihilation at Rest

 

LEAP 90, Stockholm, Sweden, 2-6 July, 1990.

* S. Kurokawa et al.

 

Design of a Low-Energy Electrostatically-Separated Antiproton Beam K4 at the 12 GeV Proton Synchrotron

 

KEK-82-4, 1982

* M. Kobayashi et al.

 

Construction of Self-Supporting Cylindrical Μltiwire Proportional Chambers

 

KEK Report 84-10, 1984

* M. Kobayashi et al.

 

Energy Caliblation of NaI(Tl) and BGO Detectors at 6.13 MeV by using a Pu-C Source

 

KEK Internal 84-5

* M. Kobayashi and S. Kurosawa

 

Search for Baryonia by Exclusive Measurement of γ Rays in p-bar Annihilation at Rest

 

KEK Internal 86-14,1986

* M. Kobayashi et al.

 

Measurement of Monochromatic π0 and η Mesons in Antiproton-deuterium Annihilation at Rest

 

KEK Internal 97-247, January 1998