Pentaquark 04: Proceedings of International Workshop, Spring-8, Japan, 20-23 July 2004 (Proceedings of the International Workshop)

Experiments......Page 8
A. Kira (Director of Spring-8)......Page 14
H. Toki (Director of RCNP, Osaka University)......Page 16
1. Introduction - What can QED teach us about QCD?......Page 18
2.1. The QCD-updated Sakharov-Zeldovich mass formula......Page 19
2.4. Conclusions from basics - What we do know and don’t......Page 20
3.2. What the quark model says about exotics......Page 21
3.4. Flavor antisymmetry principle - No leading exotics......Page 22
4.2. How to ezplain + with quark - The two-state model......Page 23
4.3. A variational approach for the Pentaquark Multiplet......Page 24
6. Experimental contradictions about the O+......Page 26
References......Page 27
1. On confinement......Page 28
2. Spontaneous Chiral Symmetry Breaking (SCSB)......Page 29
3. Mesons......Page 31
4. Baryons......Page 32
5 . Pentaquarks......Page 35
References......Page 38
1. The first O+ search experiment......Page 40
3. Further study at LEPS......Page 41
References......Page 42
1. Charm Production at B factories......Page 44
2. Charmonium-like state X(3872)......Page 45
3. What is it?......Page 46
5. D   (2317) and D   (2457)......Page 48
7. Anomalous (A   ) structure in B   A......Page 50
References......Page 51
1. Introduction......Page 52
3. Analysis and results......Page 53
4. Other experiments......Page 57
5. Conclusion......Page 58
References......Page 59
1. Introduction......Page 60
2. Preliminary results......Page 62
3. Conclusions......Page 65
Refererences......Page 66
1. Physics Motivation......Page 67
2. Experimental Setup......Page 68
3.1. Published Results......Page 69
3.2. Ongoing Data Analysis......Page 70
4. Perspectives and Future Plans......Page 73
References......Page 74
1. Introduction......Page 75
2. Experimental setup and analysis......Page 76
3. Results......Page 78
4. Summary and Outlook......Page 81
References......Page 82
1. Introduction......Page 83
2. Experiment......Page 84
3. Results......Page 85
3.1. Systematic Studies......Page 87
Acknowledgments......Page 90
References......Page 91
1. Introduction and experiment......Page 92
2. Evidence for the strange pentaquark O+(1530)......Page 93
4. Search for a charmed pentaquark decaying to D......Page 96
5. summary......Page 98
References......Page 99
1. Introduction......Page 100
2. Selection of D* and proton candidates......Page 101
3. Analysis of D*p combinations......Page 102
References......Page 103
1. Introduction......Page 104
2. Experiment and analysis......Page 105
References......Page 107
1. Introduction......Page 108
3. Search for O+ using kaon interactions in the detector material......Page 109
4. Search for pentaquarks in B meson decays......Page 113
References......Page 115
1. Introduction......Page 116
2. Data Sample......Page 117
3. Search for the O (1540)  pK......Page 118
4. Search for  and......Page 119
5. Upper Limits......Page 120
6. Summary......Page 121
Acknowledgements......Page 122
References......Page 123
2. CDF Detector......Page 124
3. General Search Strategy......Page 125
4. Search for Oc......Page 126
6. Search for (1860)......Page 128
References......Page 130
Search for the Pentaquark O+ in the  3He 4 P    Reaction Measured at CLAS S. Niccolai (for the CLAS Collaboration)......Page 132
References......Page 134
1. Introduction......Page 136
2. Theoretical predictions......Page 137
4. The experimental set-up......Page 138
5. Expected statistical accuracy......Page 140
6. Summary......Page 142
References......Page 143
A Search for Neutral Baryon Resonances Below Pion Threshold X . Jiang......Page 144
References......Page 149
1. Introduction......Page 151
2. Design of TPC......Page 152
4. Experiment at SPring-8/LEPS......Page 153
References......Page 154
Theories......Page 9
1. Generalities......Page 155
2. The ideal observable......Page 158
3. Remarks on models......Page 159
4. Summary and outlook......Page 163
References......Page 164
1. Introduction......Page 166
2. O+ production in photonucleon reactions......Page 167
3. O+ production in proton-proton reactions......Page 169
5.  and  production in photonucleon reactions......Page 170
6. O+ production in relativistic heavy ion collisions......Page 171
References......Page 172
1. Introduction......Page 174
2. Formalism......Page 175
4. Results and Discussion......Page 178
References......Page 181
1. Problems......Page 182
2. Background......Page 184
4. Results......Page 185
References......Page 187
Comment on the O+-Production at High Energy A.I. Titov, A . Hosaka, S. Date\'and Y. Ohashi......Page 188
References......Page 190
INTRODUCTION......Page 191
Some Formulations......Page 192
Practical concerns......Page 193
References......Page 194
1. Reflection symmetry and spin parity of O+......Page 195
2. Angular momenta and polarization/spin observables......Page 197
References......Page 198
2. Continuum level density......Page 199
3. Time delay......Page 200
4. Time delay and resonance physics......Page 201
5. Resonances in m r and .rrK scattering......Page 203
References......Page 206
1. Introduction......Page 207
2. Collision time: From the fifties until now......Page 208
3.1. S-matrix poles......Page 209
4.1. Energy dependent calculations......Page 210
4.2. Pentaquark resonances from single energy values of K+N phase shifts......Page 212
References......Page 214
2. Photon induced reactions:  +......Page 215
3. Nucleon induced reactions:  and +......Page 216
References......Page 218
Determining the O+ Quantum Numbers Through a Kaon Induced Reaction T. Hyodo, A . Hosaka, E. Oset and M.J. Vicente Vacas......Page 219
References......Page 222
1. Has O+ been really found?......Page 223
2. How many 8 ’ s ?......Page 224
3. Spin and parity of O+......Page 225
4. The width of O+......Page 226
5. Exotic cascades......Page 227
6. Cryptoexotic states and mixing......Page 228
7. Summary......Page 229
References......Page 230
1. Introduction......Page 232
2. Collective Quantization of the Soliton......Page 233
3. Results......Page 234
3.1. Ordinary Bamons and their Monopole Excitations......Page 235
3.3. Baryons from the 27-plet......Page 236
3.4. Magnetic Moment lh.xnsition Matria: Elementa......Page 237
References......Page 238
1. Introduction and Summary......Page 240
2. The Hamiltonian......Page 242
4. Predictions and Discussions......Page 245
References......Page 246
1. Introduction......Page 248
2. Constraints on parameters......Page 249
3. Magnetic moments in the chiral quark-soliton model......Page 250
4. Results and discussion......Page 251
References......Page 254
Narrow Pentaquark States in a Quark Model with Antisymmetrized Molecular Dynamics Y. Kanada-En’yo, 0. Morimatsu and T. Nishikawa......Page 256
References......Page 263
1. Introduction......Page 264
2. Decay width......Page 265
3. Summary and discussions......Page 269
References......Page 270
1. Introduction......Page 271
3. The orbital wave function......Page 272
4. The antidecuplet......Page 273
5. Representation mixing......Page 275
6. Heavy pentaquarks......Page 277
References......Page 278
1. Introduction......Page 279
2. Model......Page 280
3. Results and discussions......Page 282
References......Page 286
Contribution of Instanton Induced Interaction for Pentaquarks in MIT Bag Model T. Shinozaki, M. Oka and S. Takeuchi......Page 287
References......Page 290
1. Introduction......Page 291
2.1. Interaction......Page 292
2.2. Method......Page 293
3. Results and discussion......Page 295
4. Conclusion......Page 297
References......Page 298
1. Introduction......Page 299
2. Wavefunctions and interactions of pentaquark baryons......Page 300
3. Mass sum rules......Page 303
4. Ideal mixing of antidecuplet and octet with the OZI rule......Page 304
References......Page 305
1. Introduction......Page 307
2. Correlation functions......Page 309
2.2. Our method......Page 310
3. Estimating the overlap strength......Page 311
4. Reanalysis of SDO sum rule......Page 313
References......Page 314
2. Lattice pentaquark spectroscopy......Page 315
2.1. Estimation of the KN threshold......Page 316
2.2. Choice of operators......Page 317
2.3. Parity projection......Page 318
3.2. Results......Page 319
4. Subsequent lattice studies......Page 320
5. Summary and Outlook......Page 321
References......Page 322
1. QCD primer......Page 323
2. Baryon resonances......Page 324
2.1. Roper and S11......Page 325
2.2. The n ghost......Page 326
3. Pentaquarks......Page 328
4. Conclusion......Page 330
References......Page 331
1. Introduction......Page 333
2. Parity projection......Page 334
3. Numerical Result with standard BC......Page 335
4. Further investigation with hybrid BC......Page 337
References......Page 340
1. Introduction......Page 341
2. Formalism to separate the states......Page 342
3. Lattice set up......Page 343
4. Ground-state and 1st Excited-state in (I, Jp) = (0,  ) channel......Page 344
5 . ( I , J p ) = ( 0 ) channel......Page 346
References......Page 347
1. Introduction......Page 348
2. Computation of quark propagators......Page 350
3. Determination of a-1 and m,......Page 351
4. The 3 x 3 correlation matrix for O......Page 352
5. Distinguishing the KN scattering states......Page 353
6. Concluding remarks......Page 354
References......Page 355
1. Introduction......Page 356
2. Theoretical Ansatz: OGE Coulomb plus multi-Y Ansatz......Page 357
3. Multi-quark Wilson loops and multi-quark potentials......Page 358
4. Lattice QCD results and Concluding Remarks......Page 359
References......Page 360
1. Introduction......Page 361
2. Two-point Correlator in QCD......Page 362
2.1. Parity Projection......Page 363
2.2. Choice of Interpolating Local Operator......Page 364
3. Sum Rule for Pentaquark......Page 365
4. Discussion......Page 367
4.1. PP Strikes Back?......Page 368
5. Conclusion......Page 369
References......Page 370
1. Introduction......Page 371
2. O+ from the QCD Sum Rule......Page 372
3. 8f and 10f Pentaquark Baryons......Page 373
References......Page 374
Mass and Parity of Pentaquark from Two-hadron-irreducible QCD Sum Rule T. Nishikawa......Page 375
References......Page 378
2.1. Pentaquarka in the constituent quark model......Page 379
2.2. Mass splitting in the 10 -plet......Page 381
3. Pentaquark spectrum in the Glozman-Riska model......Page 382
4. KMT flavour dependent interaction......Page 384
References......Page 386
1. Introduction......Page 387
2.1. Selfeneryy from the K N decay channel......Page 388
2.2. The O+ selfenergy tied to the two-meson cloud......Page 389
3. Conclusions......Page 393
References......Page 394
Production of O+ Hypernuclei with the (K+, K+) Reaction H. Nagahiro, S. Hirenzaki, E. Oset and M.J. Vicente Vacas......Page 395
References......Page 400
2. Basic formulations of CMD......Page 403
4. Correlation between color and distance, and the life time......Page 404
5. Potential surface as a function of a and D......Page 405
References......Page 406
Exotic Pentaquarks, Crypto-heptaquarks and Linear Three-hadronic Molecules P. Bicudo......Page 407
Acknowledgments......Page 412
References......Page 413
1. Is the O+ a KTN bound state?......Page 415
2. Coupling of the O+ to K N......Page 418
3. A resonant  K state as a dynamically generated exotic baryon......Page 419
References......Page 422
1. Introduction......Page 423
2. Dual gravity model of QCD......Page 425
4. Maldacena prototype model......Page 427
6. Decay process of pentaquarks......Page 428
8. Conclusion......Page 429
References......Page 430
1. Introduction......Page 431
2.1. The Three-Quark Potential in Lattice QCD......Page 432
3. The Gluonic Excitation in the 3Q System......Page 433
4. The QCD String Theory for the Penta-Quark Decay......Page 434
References......Page 437
Summary Talks......Page 13
1. Introduction......Page 439
2. Reasons to be Optimistic......Page 440
3. Reasons to be Pessimistic......Page 441
4. The Problem of the Width......Page 443
5. Summary......Page 444
References......Page 445
1. Basics......Page 447
2. Talks at this conference......Page 448
3. Negative parity......Page 450
4. Positive parity......Page 451
6. Closing comments......Page 453
References......Page 454
List of Participants......Page 456