Double parton scattering in pp collisions at √s=63 GeV
Creators
- Akesson, T.1
- Breuker, H.1
- Fabjan, C.W.1
- Goerlach, U.1
- Katsanevas, S.1
- Markou, A.1
- Nielsen, B.S.1
- Schukraft, J.1
- Specht, H.1
- Willis, W.J.1
- Albrow, M.G.2
- McCubbin, N.A.2
- Williamson, J.2
- Almehed, S.3
- Hedberg, V.3
- Jarlskog, G.3
- Kulka, K.3
- Loerstad, B.3
- Mjoernmark, U.3
- Benary, O.4
- Dagan, S.4
- Lissauer, D.4
- Oren, Y.4
- Boeggild, H.5
- Botner, O.5
- Dahl-Jensen, E.5
- Dahl-Jensen, I.5
- Damgaard, G.5
- Hansen, K.H.5
- Kjaer, N.J.5
- Moeller, R.5
- Spang, K.5
- Thodberg, H.H.5
- Carter, A.A.6
- Carter, J.R.7
- Choi, Y.8
- Cleland, W.E.8
- Kroeger, R.8
- Sullivan, M.8
- Thompson, J.A.8
- Olsen, L.9
- Vella, E.10
- Axial Field Spectrometer Collaboration
- 1. European Organization for Nuclear Research, Geneva (Switzerland)
- 2. Science and Engineering Research Council, Chilton (UK). Rutherford Appleton Lab.
- 3. Lund Univ. (Sweden)
- 4. Tel Aviv Univ. (Israel)
- 5. Niels Bohr Inst., Copenhagen (Denmark)
- 6. Queen Mary Coll., London (UK)
- 7. Cambridge Univ. (UK)
- 8. Pittsburgh Univ., PA (USA)
- 9. Brookhaven National Lab., Upton, NY (USA)
- 10. Pennsylvania Univ., Philadelphia (USA)
Description
In a study of pp collisions at √s = 63 GeV with more than 29 GeV total transverse energy emitted into 1.8 units of rapidity in the central region, we have extracted a sample of 4-jet events and compared it with models of the two sources of 4-jet events and compared it with models of the two sources of 4-jet production: double bremsstrahlung and double parton scattering. The data cannot be described by bremsstrahlung alone, and we extract the fraction of 4-jet events attributed to double parton scattering for various definitions of the 4-jet sample. We determine the double parton scattering/2-jet yield ratio, and this leads to a determination of the proton radius. We discuss the implications of our observations for the general understanding of high-σET events. (orig.)
Additional details
Publishing Information
- Journal Title
- Z. Phys., C
- Journal Volume
- 34
- Journal Issue
- 2
- Series
- Z. Phys., C.
- Journal Page Range
- 163-174
- ISSN
- 0170-9739
- CODEN
- ZPCFD
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 18034392
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BREMSSTRAHLUNG; ENERGY SPECTRA; EXPERIMENTAL DATA; GEV RANGE 10-100; JET MODEL; MULTIPLE PRODUCTION; MULTIPLE SCATTERING; PARTICLE RADII; PARTICLE RAPIDITY; PARTONS; PROTON-PROTON INTERACTIONS; PROTONS; TRANSVERSE MOMENTUM
- Descriptors DEC
- BARYON-BARYON INTERACTIONS; BARYONS; CATIONS; CHARGED PARTICLES; DATA; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INFORMATION; INTERACTIONS; IONS; LINEAR MOMENTUM; MATHEMATICAL MODELS; NUCLEON-NUCLEON INTERACTIONS; NUCLEONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; POSTULATED PARTICLES; PROTON-NUCLEON INTERACTIONS; RADIATIONS; SCATTERING; SPECTRA
Optional Information
- Collaborations
- Axial Field Spectrometer Collaboration.