Observation and studies of double production at the Tevatron
Journal Article
·
· Physical Review. D, Particles, Fields, Gravitation and Cosmology
We present the observation of doubly-produced $$J/\psi$$ mesons with the D0 detector at Fermilab in $$p\bar{p}$$ collisions at $$\sqrt{s}=1.96$$ TeV. The production cross section for both singly and doubly-produced $$J/\psi$$ mesons is measured using a sample with an integrated luminosity of 8.1fb$$^{-1}$$. For the first time, the double $$J/\psi$$ production cross section is separated into contributions due to single and double parton scatterings. Using these measurements, we determine the effective cross section $$\sigma_{eff}$$, a parameter characterizing an effective spatial area of the parton-parton interactions and related to the parton spatial density inside the nucleon.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- D0 Collaboration
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1295697
- Alternate ID(s):
- OSTI ID: 1180055
- Report Number(s):
- FERMILAB-PUB-14-176-E; arXiv:1406.2380; 1299990
- Journal Information:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 90, Issue 11; ISSN 1550-7998
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 77 works
Citation information provided by
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Web of Science
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