Scale invariant 0(g{sup 4}) Lipatov kernels at non-zero momentum transfer

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We summarize recent work on the evaluation of the scale invariant next-to-leading order Lipatov kernel, constructed via transverse momentum diagrams. At zero momentum transfer the square of the leading-order kernel appears together with an additional component, now identified as a new partial-wave amplitude, having a separate, holomorphically factorizable, spectrum. We present a simplified expression for the full kernel at non-zero momentum transfer and give a complete analysis of its infrared properties. We also construct a nonforward extension of the new amplitude which is infrared finite and satifies Ward identity constraints. We conjecture that this new kernel has the conformal invariance ... continued below

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25 p.

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Coriano, C.; White, A. R. & Parwani, R. R. January 1996.

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Description

We summarize recent work on the evaluation of the scale invariant next-to-leading order Lipatov kernel, constructed via transverse momentum diagrams. At zero momentum transfer the square of the leading-order kernel appears together with an additional component, now identified as a new partial-wave amplitude, having a separate, holomorphically factorizable, spectrum. We present a simplified expression for the full kernel at non-zero momentum transfer and give a complete analysis of its infrared properties. We also construct a nonforward extension of the new amplitude which is infrared finite and satifies Ward identity constraints. We conjecture that this new kernel has the conformal invariance properties corresponding to the holomorphic factorization of the forward spectrum.

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25 p.

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INIS; OSTI as DE96004396

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  • Other Information: PBD: [1996]

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  • Other: DE96004396
  • Report No.: DOE/ER/40272--231
  • Report No.: UFIFT-HEP--95-20;ANL-HEP-PR--95-53;IFTIP/BBSR--95-80
  • Grant Number: FG05-86ER40272;W-31109-ENG-38
  • DOI: 10.2172/176796 | External Link
  • Office of Scientific & Technical Information Report Number: 176796
  • Archival Resource Key: ark:/67531/metadc669609

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  • January 1996

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 14, 2015, 5:20 p.m.

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Coriano, C.; White, A. R. & Parwani, R. R. Scale invariant 0(g{sup 4}) Lipatov kernels at non-zero momentum transfer, report, January 1996; United States. (digital.library.unt.edu/ark:/67531/metadc669609/: accessed May 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.