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Photoproduction of K+K- Pairs in Ultraperipheral Collisions

Acharya, S. ; Basu, S. LU orcid ; Christiansen, P. LU ; Hansen, J. LU orcid ; Iversen, K.E. LU orcid ; Matonoha, O. LU ; Nepeivoda, R. LU orcid ; Ohlson, A. LU ; Silvermyr, D. LU orcid and Staa, J. LU , et al. (2024) In Physical Review Letters 132(22).
Abstract
K+K- pairs may be produced in photonuclear collisions, either from the decays of photoproduced φ(1020) mesons or directly as nonresonant K+K- pairs. Measurements of K+K- photoproduction probe the couplings between the φ(1020) and charged kaons with photons and nuclear targets. The kaon-proton scattering occurs at energies far above those available elsewhere. We present the first measurement of coherent photoproduction of K+K- pairs on lead ions in ultraperipheral collisions using the ALICE detector, including the first investigation of direct K+K- production. There is significant K+K- production at low transverse momentum, consistent with coherent photoproduction on lead targets. In the mass range 1.1
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Contribution to journal
publication status
published
subject
keywords
Bosons, Hadrons, Mass spectrometry, Photons, Rutherford backscattering spectroscopy, gluconate potassium, lead, proton, Center-of-mass energies, Energy, Lead ions, Measurements of, Nonresonant, Nuclear targets, Photonuclear, Photoproductions, Proton scattering, Transverse momenta, article, controlled study, human, meson, photon, Germanium alloys
in
Physical Review Letters
volume
132
issue
22
article number
222303
publisher
American Physical Society
external identifiers
  • scopus:85195059933
ISSN
0031-9007
DOI
10.1103/PhysRevLett.132.222303
language
English
LU publication?
yes
id
b5bfadd4-5928-487b-b501-2c77206cefd2
date added to LUP
2024-08-29 13:11:05
date last changed
2025-01-27 15:10:13
@article{b5bfadd4-5928-487b-b501-2c77206cefd2,
  abstract     = {{K+K- pairs may be produced in photonuclear collisions, either from the decays of photoproduced φ(1020) mesons or directly as nonresonant K+K- pairs. Measurements of K+K- photoproduction probe the couplings between the φ(1020) and charged kaons with photons and nuclear targets. The kaon-proton scattering occurs at energies far above those available elsewhere. We present the first measurement of coherent photoproduction of K+K- pairs on lead ions in ultraperipheral collisions using the ALICE detector, including the first investigation of direct K+K- production. There is significant K+K- production at low transverse momentum, consistent with coherent photoproduction on lead targets. In the mass range 1.1}},
  author       = {{Acharya, S. and Basu, S. and Christiansen, P. and Hansen, J. and Iversen, K.E. and Matonoha, O. and Nepeivoda, R. and Ohlson, A. and Silvermyr, D. and Staa, J. and Vislavicius, V. and Zurlo, N.}},
  issn         = {{0031-9007}},
  keywords     = {{Bosons; Hadrons; Mass spectrometry; Photons; Rutherford backscattering spectroscopy; gluconate potassium; lead; proton; Center-of-mass energies; Energy; Lead ions; Measurements of; Nonresonant; Nuclear targets; Photonuclear; Photoproductions; Proton scattering; Transverse momenta; article; controlled study; human; meson; photon; Germanium alloys}},
  language     = {{eng}},
  number       = {{22}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Photoproduction of K+K- Pairs in Ultraperipheral Collisions}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.132.222303}},
  doi          = {{10.1103/PhysRevLett.132.222303}},
  volume       = {{132}},
  year         = {{2024}},
}