Polarized $\Lambda$'s in the current fragmentation region - INSPIRE

DataBETA

Polarized $\Lambda$ 's in the current fragmentation region

R.L. Jaffe
(
- MIT, LNS and
- Harvard U.
)

May, 1996

12 pages

Published in:

Phys.Rev.D 54 (1996) 11, R6581-R6585

Published: Dec 1, 1996

e-Print:

hep-ph/9605456 [hep-ph]

DOI:

10.1103/PhysRevD.54.R6581

Report number:

MIT-CTP-2534,
HUTP-95-A018

View in:

reference search155 citations

Citations per year

Abstract:

Data on the nucleon spin structure suggests that the

u

(and

d

) quark distributions in the

\Lambda

hyperon may be polarized. If this correlation carries over into fragmentation, then the study of polarized

\Lambda

's in the current fragmentation region of deep inelastic lepton scattering will be a sensitive probe of nucleon spin structure.

\Lambda

production by polarized electrons from unpolarized targets can search for this correlation. If it is signficant,

\Lambda

production by unpolarized electrons from longitudinally and transversely polarized targets can probe the

u

-quark helicity and transversity distributions in the nucleon. We review what is known about quark polarization in the

\Lambda

, summarize electroproduction of polarized

\Lambda

s, and estimate the sensitivity to quark polarizations in the nucleon. We also describe polarization phenomena associated with vector meson electroproduction that can be observed in the same experimental regime.

13.88.+e
14.20.Jn
electron nucleon: deep inelastic scattering
deep inelastic scattering: electron nucleon
electron: polarized beam
polarized beam: electron
polarized target
current: fragmentation
hard scattering
Feynman graph

References(20)

Figures(0)

A New measurement of the spin dependent structure function g1(x) of the deuteron

Spin Muon

Collaboration

•

D. Adams
(
- Rice U.
)

et al.

- Phys.Lett.B 357 (1995) 248-254
•
DOI:
- 10.1016/0370-2693(95)00898-U

Polarized q ---> Lambda fragmentation functions from e+ e- ---> Lambda + X

M. Burkardt
(
- MIT, LNS
)
,
R.L. Jaffe
(
- MIT, LNS
)

- Phys.Rev.Lett. 70 (1993) 2537-2540
•
e-Print:
- hep-ph/9302232
•
DOI:
- 10.1103/PhysRevLett.70.2537

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

What can we learn from unpolarized and polarized electroproduction of fast baryons?

X. Artru
(
- Lyon, IPN
)
,
M. Mekhfi
(
- Oran U.
)

- Nucl.Phys.A 532 (1991) 351-358,
- Hadronic Workshop 1990:351-358,
- Nucl. Phys. A532 (1991) 351c-358c and Lyon I Univ. - LYCEN 9105 (91,rec.Mar.) 7 p
•
DOI:
- 10.1016/0375-9474(91)90709-F

Proposals for measuring transversity distributions in deep inelastic electron scattering and a model for E-704 asymmetries

Xavier Artru
(
- Lyon, IPN
)

e-Print:
- hep-ph/9310323

Measuring the transverse polarization of quarks in the proton

- Z.Phys.C 55 (1992) 409-416
•
DOI:
- 10.1007/BF01565099

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

Chiral odd parton distributions and Drell-Yan processes

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

- Nucl.Phys.B 375 (1992) 527-560
•
DOI:
- 10.1016/0550-3213(92)90110-W

The Proton spin puzzle and lambda polarization in deep inelastic scattering

John R. Ellis
(
- CERN
)
,
Dmitri Kharzeev
(
- CERN and
- Bielefeld U.
)
,
Aram Kotzinian
(
- Yerevan Phys. Inst. and
- INFN, Trieste
)

- Z.Phys.C 69 (1996) 467-474
•
e-Print:
- hep-ph/9506280
•
DOI:
- 10.1007/s002880050048

Accessing directly the strange quark content of the proton at HERA

Wei Lu
(
- CCAST World Lab, Beijing and
- Beijing, Inst. High Energy Phys.
)

- Phys.Lett.B 373 (1996) 223-228
•
e-Print:
- hep-ph/9508297
•
DOI:
- 10.1016/0370-2693(96)00122-0

Probing quark fragmentation functions for spin 1/2 baryon production in unpolarized e+ e- annihilation

- Nucl.Phys.B 445 (1995) 380-398
•
e-Print:
- hep-ph/9410337
•
DOI:
- 10.1016/0550-3213(95)00193-V

Lambda polarization in e+ e- annihilation at the Z0 pole

Gosta Gustafson
(
- Lund U.
)
,
Jari Hakkinen
(
- Lund U.
)

- Phys.Lett.B 303 (1993) 350-354
•
DOI:
- 10.1016/0370-2693(93)91444-R

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

A Sum Rule for Deep Inelastic Electroproduction from Polarized Protons

John R. Ellis
(
- Caltech and
- SLAC
)
,
Robert L. Jaffe
(
- MIT, LNS and
- SLAC
)

- Phys.Rev.D 9 (1974) 1444,
- Phys.Rev.D 10 (1974) 1669 (erratum)
•
DOI:
- 10.1103/PhysRevD.9.1444

A Sum Rule for Deep Inelastic Electroproduction from Polarized Protons

John R. Ellis
(
- Caltech and
- SLAC
)
,
Robert L. Jaffe
(
- MIT, LNS and
- SLAC
)

- Phys.Rev.D 9 (1974) 1444,
- Phys.Rev.D 10 (1974) 1669 (erratum)
•
DOI:
- 10.1103/PhysRevD.9.1444

A Reevaluation of the Gottfried sum

New Muon

Collaboration

•

M. Arneodo

et al.

- Phys.Rev.D 50 (1994) R1-R3
•
DOI:
- 10.1103/PhysRevD.50.R1

Determination of the strange quark content of the nucleon from a next-to-leading order QCD analysis of neutrino charm production

CCFR

Collaboration

•

A.O. Bazarko
(
- Columbia U.
)

et al.

- Z.Phys.C 65 (1995) 189-198
•
e-Print:
- hep-ex/9406007
•
DOI:
- 10.1007/BF01571875

Spin, twist and hadron structure in deep inelastic processes

Robert L. Jaffe
(
- MIT, LNS and
- Harvard U.
)

•
e-Print:
- hep-ph/9602236

Chiral odd and spin dependent quark fragmentation functions and their applications

Xiang-Dong Ji
(
- MIT, LNS
)

- Phys.Rev.D 49 (1994) 114-124
•
e-Print:
- hep-ph/9307235
•
DOI:
- 10.1103/PhysRevD.49.114

Novel Effects in Deep Inelastic Scattering from Spin 1 Hadrons

- Nucl.Phys.B 312 (1989) 571-588
•
DOI:
- 10.1016/0550-3213(89)90572-5