Photoproduction of K+K- Pairs in Ultraperipheral Collisions

S. Acharya; S. Basu; P. Christiansen; J. Hansen; K.E. Iversen; O. Matonoha; R. Nepeivoda; A. Ohlson; D. Silvermyr; J. Staa; V. Vislavicius; N. Zurlo; ALICE Collaboration

doi:10.1103/PhysRevLett.132.222303

Photoproduction of K+K- Pairs in Ultraperipheral Collisions

S. Acharya, S. Basu, P. Christiansen, J. Hansen, K.E. Iversen, O. Matonoha, R. Nepeivoda, A. Ohlson, D. Silvermyr, J. Staa, V. Vislavicius, N. Zurlo, ALICE Collaboration

Particle and nuclear physics

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

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

Original language	English
Article number	222303
Journal	Physical Review Letters
Volume	132
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.132.222303
Publication status	Published - 2024

Subject classification (UKÄ)

Subatomic Physics

Free 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

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10.1103/PhysRevLett.132.222303Licence: CC BY

Cite this

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title = "Photoproduction of K+K- Pairs in Ultraperipheral Collisions",

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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author = "S. Acharya and S. Basu and P. Christiansen and J. Hansen and K.E. Iversen and O. Matonoha and R. Nepeivoda and A. Ohlson and D. Silvermyr and J. Staa and V. Vislavicius and N. Zurlo and {ALICE Collaboration}",

year = "2024",

doi = "10.1103/PhysRevLett.132.222303",

language = "English",

volume = "132",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

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TY - JOUR

T1 - Photoproduction of K+K- Pairs in Ultraperipheral Collisions

AU - Acharya, S.

AU - Basu, S.

AU - Christiansen, P.

AU - Hansen, J.

AU - Iversen, K.E.

AU - Matonoha, O.

AU - Nepeivoda, R.

AU - Ohlson, A.

AU - Silvermyr, D.

AU - Staa, J.

AU - Vislavicius, V.

AU - Zurlo, N.

AU - ALICE Collaboration

PY - 2024

Y1 - 2024

N2 - 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

AB - 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

KW - Bosons

KW - Hadrons

KW - Mass spectrometry

KW - Photons

KW - Rutherford backscattering spectroscopy

KW - gluconate potassium

KW - lead

KW - proton

KW - Center-of-mass energies

KW - Energy

KW - Lead ions

KW - Measurements of

KW - Nonresonant

KW - Nuclear targets

KW - Photonuclear

KW - Photoproductions

KW - Proton scattering

KW - Transverse momenta

KW - article

KW - controlled study

KW - human

KW - meson

KW - photon

KW - Germanium alloys

U2 - 10.1103/PhysRevLett.132.222303

DO - 10.1103/PhysRevLett.132.222303

M3 - Article

SN - 0031-9007

VL - 132

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

M1 - 222303

ER -

Photoproduction of K+K- Pairs in Ultraperipheral Collisions

Abstract

Subject classification (UKÄ)

Free keywords

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