Instanton-induced charm contribution to polarized deep-inelastic scattering

Andree Blotz; Edward Shuryak

doi:10.1016/S0370-2693(98)01051-X

Instanton-induced charm contribution to polarized deep-inelastic scattering

Andree Blotz
, Edward Shuryak

Physics and Astronomy

Stony Brook University

Los Alamos National Laboratory Theoretical Division

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Recent data on B decays involving η′ may be explained if the singlet axial current of charmed quarks has a large matrix element to η′, and instantons were shown to be able to generate this effect. We study the magnitude of charm contributions to nucleon polarized structure functions generated in a similar way. Comparing the charm contribution, which is related to a dim(6) gluonic operator, to that of light quarks, which are related by the anomaly equation to GG̃, we found that Δc/ΔΣ ≃ -0.03. Future experiments like COMPASS at CERN identifying charm production in DIS can measure this "intrinsic polarized charm" component of the nucleon.

Original language	English
Pages (from-to)	415-420
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	439
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(98)01051-X
State	Published - Nov 5 1998

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title = "Instanton-induced charm contribution to polarized deep-inelastic scattering",

abstract = "Recent data on B decays involving η′ may be explained if the singlet axial current of charmed quarks has a large matrix element to η′, and instantons were shown to be able to generate this effect. We study the magnitude of charm contributions to nucleon polarized structure functions generated in a similar way. Comparing the charm contribution, which is related to a dim(6) gluonic operator, to that of light quarks, which are related by the anomaly equation to G{\~G}, we found that Δc/ΔΣ ≃ -0.03. Future experiments like COMPASS at CERN identifying charm production in DIS can measure this {"}intrinsic polarized charm{"} component of the nucleon.",

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T1 - Instanton-induced charm contribution to polarized deep-inelastic scattering

AU - Blotz, Andree

AU - Shuryak, Edward

PY - 1998/11/5

Y1 - 1998/11/5

N2 - Recent data on B decays involving η′ may be explained if the singlet axial current of charmed quarks has a large matrix element to η′, and instantons were shown to be able to generate this effect. We study the magnitude of charm contributions to nucleon polarized structure functions generated in a similar way. Comparing the charm contribution, which is related to a dim(6) gluonic operator, to that of light quarks, which are related by the anomaly equation to GG̃, we found that Δc/ΔΣ ≃ -0.03. Future experiments like COMPASS at CERN identifying charm production in DIS can measure this "intrinsic polarized charm" component of the nucleon.

AB - Recent data on B decays involving η′ may be explained if the singlet axial current of charmed quarks has a large matrix element to η′, and instantons were shown to be able to generate this effect. We study the magnitude of charm contributions to nucleon polarized structure functions generated in a similar way. Comparing the charm contribution, which is related to a dim(6) gluonic operator, to that of light quarks, which are related by the anomaly equation to GG̃, we found that Δc/ΔΣ ≃ -0.03. Future experiments like COMPASS at CERN identifying charm production in DIS can measure this "intrinsic polarized charm" component of the nucleon.

UR - https://www.scopus.com/pages/publications/0000888389

U2 - 10.1016/S0370-2693(98)01051-X

DO - 10.1016/S0370-2693(98)01051-X

M3 - Article

SN - 0370-2693

VL - 439

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EP - 420

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

Instanton-induced charm contribution to polarized deep-inelastic scattering

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