Proposal for Direct Measurement of Polarized Gluon Distributions
نویسندگان
چکیده
منابع مشابه
Leptoproductions and Polarized Gluon Distributions
In order to extract the behavior and magnitude of the spin–dependent gluon distribution, we propose a semi–inclusive Λ+c production using unpolarized lepton beams and polarized proton targets. The correlation between the target proton spin and the spin of Λ+c produced in the target fragmentation region might be very effective for testing various models of polarized gluons. E–mail kochelev@thsun...
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The recent high precision SMC data on polarized μp scatterings have again confirmed that very little of the proton spin is carried by quarks. To unravel the mystery of the proton spin structure, it is quite important to know the behavior of the polarized gluon distribution. By using the positivity condition of distribution functions together with the unpolarized and polarized experimental data,...
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Theoretical constraints on both the polarized and unpolarized intrinsic gluorl distribution functions are developed. In pa.rticular, we study tllc beha\;ior of the gluon polarization aaymmetry in the nucleon in the sma.ll and la.rge s regiolls, a.ud relate the intrinsic distribution to the retarded part of the spin-depenclent I~ound-state potential. A simple model for the polarized and unpolari...
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The flavor-dependent valence, sea quark and antiquark spin distributions can be determined separately from theoretical assumptions and experimental data. We have determined the valence distributions using the Bjorken sum rule and have extracted polarized sea distributions, assuming that the quarks and anti-quarks for each flavor are symmetric. Other experiments have been proposed which will all...
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Preliminary results for inclusive and semi-inclusive hadron asymmetries are presented for 3 He and 1 H targets, measured in 1995 and 1996 at the HERMES experiment. Under the assumption of spin-independent fragmentation, these asymmetries may be used to extract the polarizations of individual quark avors. The extraction requires a knowledge of unpolarized parton distributions , an understanding ...
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ژورنال
عنوان ژورنال: Europhysics Letters (EPL)
سال: 1995
ISSN: 0295-5075,1286-4854
DOI: 10.1209/0295-5075/29/4/001