D-wave effects in heavy quarkonium production in ultraperipheral nuclear collisions

M. Krelina (Czech Technical University in Prague, FNSPE, Břehová 7, 11519 Prague, Czech Republic) ; J. Nemchik (Czech Technical University in Prague, FNSPE, Břehová 7, 11519 Prague, Czech Republic; Institute of Experimental Physics SAS, Watsonova 47, 04001 Košice, Slovakia)

The D-wave admixture in quarkonium wave functions is acquired from the photonlike structure of VQQ¯ transition in the light-front frame widely used in the literature. Such a D-wave ballast is not justified by any nonrelativistic model for QQ¯ interaction potential and leads to falsified predictions for the cross sections in heavy quarkonium production in ultraperipheral nuclear collisions. We analyze this negative role of D-wave contribution by comparing with our previous studies based on a simple non-photon-like “S-wave-only” VQQ¯ transition in the QQ¯ rest frame.

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      "title": "<math><mi>D</mi></math>-wave effects in heavy quarkonium production in ultraperipheral nuclear collisions"
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      "source": "APS", 
      "value": "The <math><mi>D</mi></math>-wave admixture in quarkonium wave functions is acquired from the photonlike structure of <math><mi>V</mi><mo>\u2192</mo><mi>Q</mi><mover><mi>Q</mi><mo>\u00af</mo></mover></math> transition in the light-front frame widely used in the literature. Such a <math><mi>D</mi></math>-wave ballast is not justified by any nonrelativistic model for <math><mi>Q</mi><mo>\u2212</mo><mover><mi>Q</mi><mo>\u00af</mo></mover></math> interaction potential and leads to falsified predictions for the cross sections in heavy quarkonium production in ultraperipheral nuclear collisions. We analyze this negative role of <math><mi>D</mi></math>-wave contribution by comparing with our previous studies based on a simple non-photon-like \u201c<math><mi>S</mi></math>-wave-only\u201d <math><mi>V</mi><mo>\u2192</mo><mi>Q</mi><mover><mi>Q</mi><mo>\u00af</mo></mover></math> transition in the <math><mi>Q</mi><mover><mi>Q</mi><mo>\u00af</mo></mover></math> rest frame."
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Published on:
22 December 2020
Publisher:
APS
Published in:
Physical Review D , Volume 102 (2020)
Issue 11
DOI:
https://doi.org/10.1103/PhysRevD.102.114033
arXiv:
2010.00329
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

Fulltext files: