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Analytic perturbation theory and proton spin structure function g p 1 R.S. Pasechnik . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Transverse momentum dependent parton distributions and azimuthal asymmetries in light-cone quark models B. Pasquini . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 Colour modification of factorisation in single-spin asymmetries P.G. Ratcliffe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 Impact parameter representation and x-dependence of the transversity spin structure of the nucleons O.V. Selyugin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 Polarized parton distributions from NLO QCD analysis of world DIS and SIDIS data O. Shevchenko . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 Polarized PDFs: remarks on methods of QCD analysis of the data A.V. Sidorov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Potential for a new muon g − 2 experiment A.J. Silenko . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 Evolution equations for truncated Mellin moments of the parton densities D. Strózik-Kotlorz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 New developments in the quantum statistical approach of the parton distributions J. Soffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Polarized hadron structure in the valon model and the nucleon axial coupling constants: a3 and a8 F. Taghavi Shahri . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Axial anomalies, nucleon spin structure and heavy ions collisions O.V. Teryaev . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Orbital momentum effects due to a liquid nature of transient state S.M. Troshin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 Identification of extra neutral gauge bosons at the ILC with polarized beams A.V. Tsytrinov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Quark intrinsic motion and the link between TMDs and PDFs in covariant approach P. Zavada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 Experimental results 165 Search for narrow pion-proton states in s-channel at EPECUR: experiment status I.G. Alekseev . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 Measurement of tensor polarization of deuteron beam passing through matter L.S. Azhgirey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 Prospects of measuring ZZ and WZ polarization with ATLAS G. Bella . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Latest Results on Deeply Virtual Compton Scattering at HERMES A. Borissov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Polarization transfer mechanism as a possible source of the polarized antiprotons M.A. Chetvertkov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 4
Probing the hadron structure with polarised Drell-Yan reactions in COMPASS O. Denisov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 Polarization of valence, non-strange and strange quarks in the nucleon determined by COMPASS R. Gazda . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 New Monte-Carlo generator of polarized Drell-Yan processes O. Ivanov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205 High energy spin physics with the PHENIX detector at RHIC D. Kawall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209 Measurements of the Ayy, Axx, Axz and Ay analyzing powers in the 12 C( � d, P ) 13 C ∗ reaction at the energy Td=270 MeV A. S. Kiselev . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217 Overview of recent HERMES results V.A. Korotkov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 NLO QCD predictions for gluon polarization from open-charm asymmetries measured at COMPASS K. Kurek . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 Study of light nuclei spin structure from p(d, p)d, 3 He(d,p) 4 He and d(d, p) 3 H reactions. A.K. Kurilkin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 Exclusive electroproduction of ρ 0 , φ and ω mesons at HERMES S.I.Manayenkov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239 Semi-inclusive DIS and transverse momentum dependent distribution studies at CLAS M. Mirazita . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244 The completion of single-spin asymmetry measurements at the PROZA setup V.V. Mochalov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 The Generalized Parton Distribution experimental program at Jefferson Lab C. Muñoz Camacho . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256 Lambda physics at HERMES Yu. Naryshkin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 Spin physics at NICA A. Nagaytsev . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266 Measurements of transverse spin effects in the forward region with the STAR detector L.V. Nogach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270 The first stage of polarization program SPASCHARM at the accelerator U-70 of IHEP S.B. Nurushev . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274 Polarization measurements in photoproduction with CEBAF large acceptance spectrometer E. Pasyuk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282 Investigation of dp-elastic scattering and dp-breakup at ITS at Nuclotron S.M. Piyadin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 Spin physics with CLAS Y. Prok . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292 5
Page 1: XIII Advanced Research Workshop on
Page 4 and 5: ã�� [539.12.01 + 539.12 ... 14
Page 8 and 9: Measurements of GEp/GMp to high Q 2
Page 11 and 12: WELCOME ADDRESS Alexei Sissakian Di
Page 13 and 14: he joined the group of prof. Przemy
Page 15 and 16: proton. Dividing these 90 ◦ cm p-
Page 17 and 18: p-p scattering angle fixed at exact
Page 19 and 20: tuning for each ring. The Workshop
Page 21 and 22: was only about 10 5 per second, but
Page 23: [10] E.F. Parker et al., Phys. Rev.
Page 27 and 28: MICROSCOPIC STERN-GERLACH EFFECT AN
Page 29 and 30: DeGrand-Miettinen model predicted P
Page 31 and 32: TOWARDS STUDY OF LIGHT SCALAR MESON
Page 33 and 34: 104xdBR(φ--> π η 0 -1 γ )/dm, G
Page 35 and 36: RECURSIVE FRAGMENTATION MODEL WITH
Page 37 and 38: Figure 2: String decaying into pseu
Page 39 and 40: pT -distributions in the quark frag
Page 41 and 42: 4 Inclusion of spin-1 mesons For a
Page 43 and 44: CONSTITUENT QUARK REST ENERGY AND W
Page 45 and 46: 〈r 2 ch 〉≈1fm2 . Now with Eqs
Page 47 and 48: TOWARDS A MODEL INDEPENDENT DETERMI
Page 49 and 50: Common for the difference cross sec
Page 51 and 52: TRANSVERSITY GPDs FROM γN → πρ
Page 53 and 54: The scattering amplitude of the pro
Page 55 and 56: INFRARED PROPERTIES OF THE SPIN STR
Page 57 and 58:
5 Acknowledgement B.I. Ermolaev is
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We shall call this model the “sec
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y f ν V = f l V = f u V = f d gz V
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2. We remind, that the celebrated G
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of the resonance A, θV � 39 o .
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• Right-handed EW currents. The c
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pesum- (p Entries 0 + pe)-(p-pe) Me
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CROSS SECTIONS AND SPIN ASYMMETRIES
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R(ρ) 5 4 3 2 1 0 2 3 4 5 6 7 8 9 1
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TWO-PHOTON EXCHANGE IN ELASTIC ELEC
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and depend on three parameters : fN
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O(αs) SPIN EFFECTS IN e + e −
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3 Polarization results for mq → 0
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Since one has (↑↓) pc Born =(
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Figure 1: A typical lowest order Fe
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sin φ S (π + ) A UT 1.0 0.8 0.6 0
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form the agreement with these data
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in settling this dynamical issue. G
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SPIN CORRELATIONS OF THE ELECTRON A
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the two-photon system equaling 1).
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ANOTHER NEW TRACE FORMULA FOR THE C
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Compare the gain of time and effort
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where the triplet and octet axial c
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[2] Y. Prok et al. [CLAS Collaborat
Page 105 and 106:
Melosh rotations which boost the re
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ky �GeV� 0.4 0.2 0.0 �0.2 �
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[2] B. Pasquini, and S. Boffi, Phys
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The appearance of both |+〉 and |
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2.2 Intrinsic Transverse Motion Qua
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are still complex: for a given corr
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This last is required to complete t
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[16] P.G. Ratcliffe and O.V. Teryae
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Figure 1: a)[left] μpG p E /Gp M (
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4 Conclusion We introduced a simple
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√ δΔq8 x for Δq8 and γΔGx fo
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understanding of polarized light qu
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They are inverse powers of Q 2 kine
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accounts approximately for the TM a
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POTENTIAL FOR A NEW MUON g-2 EXPERI
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When the momentum increases (p >p0)
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EVOLUTION EQUATIONS FOR TRUNCATED M
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4 Perspectives Evolution equations
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NEW DEVELOPMENTS IN THE QUANTUM STA
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statistical approach compared to th
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POLARIZED HADRON STRUCTURE IN THE V
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g 3 A =Δuv(Q 2 ) − Δdv(Q 2 ), g
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AXIAL ANOMALIES, NUCLEON SPIN STRUC
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3. Vector current of strange quarks
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ORBITAL MOMENTUM EFFECTS DUE TO A L
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The elastic scattering S-matrix in
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IDENTIFICATION OF EXTRA NEUTRAL GAU
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for final l + l − events (l = μ,
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QUARK INTRINSIC MOTION AND THE LINK
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where wP = − m 2M 2 −p1 cos ω
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where g q 2x − ξ 1(x, pT )= πM2
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EXPERIMENTAL RESULTS
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01 00 11 01 01 01 00 11 01 01 01 00
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where C1, C2 and A1 - signals from
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Figure 1: Layout of experiment targ
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According to requirements of the de
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Electron energy is measured at ATLA
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Fig. 2 shows the results of the lon
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e γ* e’ x+ ξ x− ξ A A’ e e
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cos 0φ C A φ cos C A cos 2φ C A
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5 Summary HERMES has measured signi
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(1.205 ± 0.0012) GeV/c, 10 10 p/s,
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was done in the interval ”−t”
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If we admit a non-zero quark transv
Page 194 and 195:
which is trivial in collinear LO ap
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In figure 3 the expected errors on
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[12] A. V. Efremov and O. V. Teryae
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Figure 1: The COMPASS spectrometer.
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Comparing this formula to the inclu
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Figure 5: Comparison of COMPASS inc
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[9] B. Adeva et al. (SMC Coll.), Ph
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q T sin( φ-φ ) M AUT 0.14 0.12 0.
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proton beam is planned. References
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Run Year √ s (GeV) Polarization R
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ackground fraction, and asymmetry i
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At √ s = 200 GeV, ALL(pp → π
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[6] D. de Florian, W. Vogelsang, an
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higher energies, where the cross se
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Figure 3: The experimental results
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kinematic range to low values of Bj
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3 Semi-Inclusive DIS Collins and Si
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Unpolarized target asymmetries. The
Page 230 and 231:
4 Summary Since the end of data-tak
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polarization as well as a construct
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Finally the COMPASS reconstruction
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tained in the NLO QCD approximation
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with only modern NN potential are r
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(a) (b) Figure 3: (a) T20 data take
Page 242 and 243:
of electroproduction from polarized
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As is seen in Fig. 1 values of the
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SEMI-INCLUSIVE DIS AND TRANSVERSE M
Page 248 and 249:
The yellow band in Fig. 1 is the re
Page 250 and 251:
At leading twist, a third asymmetry
Page 252 and 253:
THE COMPLETION OF SINGLE-SPIN ASYMM
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A N , % 30 20 10 0 0 0.2 0.4 0.6 0.
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Unexpectedly large single spin asym
Page 258 and 259:
THE GENERALIZED PARTON DISTRIBUTION
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, E) H ~ (H, I Im C 5 4 3 2 1 Q = 1
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Reducing to a common denominator (
Page 264 and 265:
LAMBDA PHYSICS AT HERMES S. Belosto
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analysis was carried out reconstruc
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SPIN PHYSICS AT NICA A. Nagaytsev J
Page 270 and 271:
original software packages (MC simu
Page 272 and 273:
MEASUREMENTS OF TRANSVERSE SPIN EFF
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to “near-side” and “away-side
Page 276 and 277:
THE FIRST STAGE OF POLARIZATION PRO
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In paper [12] the study was made of
Page 280 and 281:
emphasis to increase the statistics
Page 282 and 283:
Table 2: The parameters of the main
Page 284 and 285:
POLARIZATION MEASUREMENTS IN PHOTOP
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With a polarized electron beam inci
Page 288 and 289:
Figure 3: Preliminary helicity asym
Page 290 and 291:
INVESTIGATION OF DP-ELASTIC SCATTER
Page 292 and 293:
framework with the use of deuteron
Page 294 and 295:
SPIN PHYSICS WITH CLAS Y. Prok 12,
Page 296 and 297:
1.3 Flavor Decomposition of the Hel
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Γ p 1 0.15 0.125 0.1 0.075 0.05 0.
Page 300 and 301:
The upcoming energy upgrade of Jeff
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y the nearly 1000 combined citation
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� R = −Pt/Pl τ(1 + ε)/2ε; he
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4 Results of GEp-III Experiment In
Page 308 and 309:
6 Theoretical Developments The earl
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lz = 0 (along the direction of the
Page 312 and 313:
models have recently been challenge
Page 314 and 315:
[32] Chung P. L. and F. Coester, Ph
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48 ± 3% for two beams. The proton
Page 318 and 319:
is constant with cos θ∗ , as exp
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In summary, we made measurements on
Page 322 and 323:
angle between the direction of the
Page 324 and 325:
The sensitivity of the data to the
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COMPASS could be converted into a f
Page 328 and 329:
3.1.2 Beam charge and spin asymmetr
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contributions enter only beyond lea
Page 332 and 333:
References [1] D. Mueller et al, Fo
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l’ l p q p h H (z) 1 h (x) 1 l l
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3. Data selection. The data selecti
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φ sin3 a 0.06 0.04 0.02 0 -0.02 -0
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TRANSVERSE SPIN AND MOMENTUM EFFECT
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model. Both the cos φh and the cos
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D cos φ A 0 -0.1 -0.2 -0.3 + h -2
Page 346 and 347:
4.3 The Sivers asymmetry According
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[3] A. Airapetian et al. [HERMES co
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2. Delta-Sigma Experimental Set-up.
Page 352 and 353:
6. Estimate of the count rate in tr
Page 354 and 355:
2 Analysis Formalism Spin-dependent
Page 356 and 357:
The MC production comprises three s
Page 358 and 359:
6 High pT hadron pair analysis for
Page 360 and 361:
[2] V. Y. Alexakhin et al. [COMPASS
Page 362 and 363:
2 Towards polarized Antiprotons For
Page 364 and 365:
4 Spin-Filtering Experiments at COS
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to test the theoretical models of t
Page 368 and 369:
C1 C2 π CH1,2 CH3,4 CH5,6 111 000
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not even resemble the data behavior
Page 372 and 373:
to the slope of the Rosenbluth plot
Page 374 and 375:
The differential cross section of t
Page 376 and 377:
with zero for all mass ranges, with
Page 378 and 379:
more precise and dedicated measurem
Page 380 and 381:
oth types of experiment results are
Page 382 and 383:
is recorded, a good particle identi
Page 384 and 385:
error of the extracted asymmetries
Page 386 and 387:
2.6 Summary and Outlook The first d
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386
Page 391 and 392:
PROTON BEAM POLARIZATION MEASUREMEN
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N A 0.06 0.05 0.04 0.03 0.02 0.01 0
Page 396 and 397:
Intensity profile (arb. units) 1 0.
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[4] H. Okada et al., Proc. of the 1
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The amplitudes of the signals and t
Page 402 and 403:
The following results has been obta
Page 404 and 405:
interaction vanishes and a single Z
Page 406 and 407:
an amorphous NH3 for low and high,
Page 408 and 409:
and depends on a choice of � ℓ1
Page 410 and 411:
3 The conditions for transparent sp
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where angles α and β are defined
Page 414 and 415:
forward angles, where vector Ay and
Page 416 and 417:
espectively. The open symbols repre
Page 418 and 419:
RF dipole (transverse B): εBdl = 1
Page 420 and 421:
i PV / PV i PV / PV 1 0.5 0 -0.5 -1
Page 422 and 423:
The energies of the states Ψ1 −
Page 424 and 425:
field P ≈ +1. If we add the trans
Page 426 and 427:
econstruction provide more accurate
Page 428 and 429:
y detector saturation from pC colli
Page 430 and 431:
2 �p+ 8 He analyzing power measur
Page 432 and 433:
3.3 Effect of valence neutrons on s
Page 434 and 435:
i.e. n0(θ +2π) =n0(θ) . There ar
Page 436 and 437:
w and ˙ɛ. For example, we use par
Page 438 and 439:
436
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REGULARIZATION OF SOURCE OF THE KER
Page 443 and 444:
The corresponding phase transition
Page 445 and 446:
ABOUT SPIN PARTICLE SOLUTION IN BOR
Page 447 and 448:
where the functions fi(s, η) must
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SPINDYNAMICS I.B. Pestov JINR, 1419
Page 451 and 452:
State of hadron matter is defined t
Page 453 and 454:
REMARK ON SPIN PRECESSION FORMULAE
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It is easy to see that for a (massi
Page 457 and 458:
DYNAMICS OF SPIN IN NONSTATIC SPACE
Page 459 and 460:
Schwinger gauge. Probably for the f
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DSPIN-09 WORKSHOP SUMMARY Jacques S
Page 463 and 464:
to some preliminary results reporte
Page 465 and 466:
A new measurement of the polarizati
Page 467 and 468:
new NLO QCD parametrization of the
Page 469:
Name (Institution, Town, Country) E
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