Coherent diffractive photoproduction of mesons on gold nuclei at 200 GeV/nucleon-pair at the Relativistic Heavy Ion Collider
Journal Article
·
· Physical Review C
Here, the STAR Collaboration reports on the photoproduction of π+π- pairs in goldgold collisions at a center-of-mass energy of 200 GeV/nucleon-pair. These pion pairs are produced when a nearly-real photon emitted by one ion scatters from the other ion. We fit the π+π- invariant mass spectrum with a combination of 0 and ! resonances and a direct π+π- continuum. This is the first observation of the ! in ultra-peripheral collisions, and the first measurement of ρ - ω interference at energies where photoproduction is dominated by Pomeron exchange.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- STAR Collaboration
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1413945
- Alternate ID(s):
- OSTI ID: 1408548; OSTI ID: 1408699
- Report Number(s):
- BNL-114724-2017-JA; BNL-114422-2017-JA; PRVCAN; R&D Project: PO 004; KB0202012; TRN: US1800598
- Journal Information:
- Physical Review C, Vol. 96, Issue 5; ISSN 2469-9985
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 25 works
Citation information provided by
Web of Science
Web of Science
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Measurement of exclusive $${{{\uprho _{}^{}} _{}^{}}{{\left( {770}\right) }{}_{}^{}}} ^{0}$$ ρ 770 0 photoproduction in ultraperipheral pPb collisions at $$\sqrt{\smash [b]{s_{_{\mathrm {NN}}}}} = 5.02\,\text {Te}\text {V} $$ s NN = 5.02 Te
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journal | August 2019 |
Exclusive vector meson production in heavy ion collisions | text | January 2019 |
Photoproduction of charged final states in ultra-peripheral collisions and electroproduction at an electron-ion collider | text | January 2019 |
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