Strong nuclear enhancement of σL/σT from coherent mesons and the HERMES effect

Marek Karliner

doi:10.1016/S0375-9474(01)01474-9

Strong nuclear enhancement of σ_L/σ_T from coherent mesons and the HERMES effect

Marek Karliner^*

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

We show that nuclear σ, ω, and π mesons can contribute coherently to σ_L on nuclei at low Q², while depleting σ_T. We describe recent HERMES DIS data at low Q² and small x, using photon-meson and meson-nucleus couplings which are consistent with (but not determined by) constraints from other experiments. We find that while nuclear coherent pions are not important for the present data, they could be observed at different kinematics. We provide several qualitatively new experimental predictions.

Original language	English
Pages (from-to)	87-94
Number of pages	8
Journal	Nuclear Physics A
Volume	699
Issue number	1-2
DOIs	https://doi.org/10.1016/S0375-9474(01)01474-9
State	Published - 25 Feb 2002

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abstract = "We show that nuclear σ, ω, and π mesons can contribute coherently to σL on nuclei at low Q2, while depleting σT. We describe recent HERMES DIS data at low Q2 and small x, using photon-meson and meson-nucleus couplings which are consistent with (but not determined by) constraints from other experiments. We find that while nuclear coherent pions are not important for the present data, they could be observed at different kinematics. We provide several qualitatively new experimental predictions.",

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AB - We show that nuclear σ, ω, and π mesons can contribute coherently to σL on nuclei at low Q2, while depleting σT. We describe recent HERMES DIS data at low Q2 and small x, using photon-meson and meson-nucleus couplings which are consistent with (but not determined by) constraints from other experiments. We find that while nuclear coherent pions are not important for the present data, they could be observed at different kinematics. We provide several qualitatively new experimental predictions.

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Strong nuclear enhancement of σ_L/σ_T from coherent mesons and the HERMES effect

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