Fragmentation of transversely polarized quarks probed in transverse momentum distributions

It is shown that the azimuthal dependence of the distribution of hadrons in a quark jet is a probe of the transverse spin of the quark initiating the jet. This results in a new spin-dependent fragmentation function that acts at the twist-2 level. One example of a process where it contributes is semi-inclusive deeply inelastic scattering with a transversely polarized nucleon target but with an {\em unpolarized} electron beam. This process is treated in detail. Another process is the cross section for singly polarized hadron-hadron scattering when two high

p_{\perp}

hadrons are measured in the final state and are close to back-to-back in azimuth. The new fragmentation function is sensitive to the coupling of the fragmentation process to (spontaneous) chiral symmetry breaking.

Note:

22 pages + 4 figures (included), LaTeX. V. 2 has misprints corrected and an appendix added, as in the published version Journal-ref: Nucl.Phys. B396 (1993) 161-182

electron p: deep inelastic scattering
deep inelastic scattering: electron p
electron p: inclusive reaction
p: polarized target
polarized target: p
hadron hadron: interaction
interaction: hadron hadron
jet: hadroproduction
hadroproduction: jet
transverse momentum: angular dependence

References(35)

Figures(0)

A New Tool for the Study of Fundamental Interactions: Parity Odd Correlations in Quark Fragmentation

Otto Nachtmann
(
- Heidelberg U.
)

- Nucl.Phys.B 127 (1977) 314-330
•
DOI:
- 10.1016/0550-3213(77)90217-6

On the Helicity of Charm Jets

- Z.Phys.C 42 (1989) 441
•
DOI:
- 10.1007/BF01548450

Heavy Quark Spin Correlations in $e^+ e^-$ Annihilations

- Phys.Lett.B 215 (1988) 783-787
•
DOI:
- 10.1016/0370-2693(88)90061-5

Jet handedness as a measure of quark and gluon polarization

- Phys.Lett.B 284 (1992) 394-400
•
DOI:
- 10.1016/0370-2693(92)90451-9

Measurements of the $u$ Valence Quark Distribution Function in the Proton and $u$ Quark Fragmentation Functions

European Muon

Collaboration

•

M. Arneodo
(
- Turin U.
)

et al.

- Nucl.Phys.B 321 (1989) 541-560
•
DOI:
- 10.1016/0550-3213(89)90261-7

Chiral odd parton distributions and polarized Drell-Yan

R.L. Jaffe
(
- MIT, LNS
)
,
Xiang-Dong Ji
(
- MIT, LNS
)

- Phys.Rev.Lett. 67 (1991) 552-555
•
DOI:
- 10.1103/PhysRevLett.67.552

Probing the nucleon's transversity distribution in polarized p p, p anti-p, and pi p collisions

Xiang-Dong Ji
(
- MIT, LNS
)

- Phys.Lett.B 284 (1992) 137-143
•
DOI:
- 10.1016/0370-2693(92)91939-7

Transversely Polarized Parton Densities, their Evolution and their Measurement

Xavier Artru
(
- Orsay, LPT
)
,
Mustapha Mekhfi
(
- Oran U.
)

- Z.Phys.C 45 (1990) 669
•
DOI:
- 10.1007/BF01556280

Quantum Chromodynamic Predictions for Large $p_T$ Hadron Production With Transversely Polarized Beam and Target

- Phys.Rev.D 19 (1979) 1503
•
DOI:
- 10.1103/PhysRevD.19.1503

Production of Dimuons from High-Energy Polarized Proton Proton Collisions

John P. Ralston
(
- Oregon U.
)
,
Davison E. Soper
(
- Oregon U.
)

- Nucl.Phys.B 152 (1979) 109,
- Argonne Symp.1978:559
•
DOI:
- 10.1016/0550-3213(79)90082-8

Comparison of Spin Asymmetries and Cross Sections in $\pi^0$ Production by 200 GeV Polarized Antiprotons and Protons

E581 and
E704

Collaborations

•

D.L. Adams
(
- Rice U.
)

et al.

- Phys.Lett.B 261 (1991) 201-206
•
DOI:
- 10.1016/0370-2693(91)91351-U

High $\chi_t$ Single Spin Asymmetry in $\pi^0$ and $\eta$ Production at $\chi_F$ = 0 by 200 GeV Polarized Antiprotons and Protons

E581 and
E704

Collaborations

•

D.L. Adams
(
- Rice U.
)

et al.

- Phys.Lett.B 276 (1992) 531-535
•
DOI:
- 10.1016/0370-2693(92)91679-4

Analyzing Power in Inclusive $\pi^+$ and $\pi^-$ Production at High $\chi_F$ with a 200 GeV Polarized Proton Beam

FNAL-E704

Collaboration

•

D.L. Adams
(
- Rice U.
)

et al.

- Phys.Lett.B 264 (1991) 462-466
•
DOI:
- 10.1016/0370-2693(91)90378-4

- Nucl.Phys.B 261 201

The Nonlocal operator expansion for inclusive particle production in e+ e- annihilation

Ian I. Balitsky
(
- St. Petersburg, INP
)
,
Vladimir M. Braun
(
- Heidelberg U. and
- St. Petersburg, INP
)

- Nucl.Phys.B 361 (1991) 93-140
•
DOI:
- 10.1016/0550-3213(91)90618-8

Power corrections in hadronic scattering. 1. Leading 1/Q**2 corrections to the Drell-Yan cross-section

- Nucl.Phys.B 353 (1991) 105-136
•
DOI:
- 10.1016/0550-3213(91)90503-P

Power corrections to hadronic scattering. 2. Factorization

- Nucl.Phys.B 353 (1991) 137-164
•
DOI:
- 10.1016/0550-3213(91)90504-Q

Single transverse spin asymmetries

- Phys.Rev.Lett. 67 (1991) 2264-2267,
- Phys. Rev. Lett. 67 (1991) 2264-2267 and State Univ. New York Stony Brook - ITP-SB-91-008 (91,rec.Aug.) 14 p. (113231)
•
DOI:
- 10.1103/PhysRevLett.67.2264