Study of four-jet events and evidence for double parton interactions in pp-bar collisions at sqrt s =1.8 TeV. Academic Article uri icon


  • Kinematic properties of four-jet events produced in pp collisions at s=1.8 TeV have been studied using data with an integrated luminosity of 325 nb-1 collected using the Collider Detector at Fermilab during the 1988-1989 Fermilab Collider run. The individual jet pT spectra and the angles between each jet pair are compared to the predictions of leading-order quantum chromodynamics for the double gluon bremsstrahlung process and good agreement is observed. In addition, a search for double parton scattering has been undertaken using variables sensitive to the topology of four-jet events. A small double parton content provides the best description of the data. We find NDPNDB=5.4-2.0+1.6%, where N represents the number of events attributed to each process. We measure DP=63-28+32 nb for jets having pT>25 GeV/c in the pseudorapidity interval ||<3.5. 1993 The American Physical Society.

published proceedings

  • Phys Rev D Part Fields

author list (cited authors)

  • Abe, F., Albrow, M., Amidei, D., Anway-Wiese, C., Apollinari, G., Atac, M., ... Cobal, M.

citation count

  • 155

complete list of authors

  • Abe, F||Albrow, M||Amidei, D||Anway-Wiese, C||Apollinari, G||Atac, M||Auchincloss, P||Azzi, P||Baden, AR||Bacchetta, N||Badgett, W||Bailey, MW||Bamberger, A||Barbaro-Galtieri, A||Barnes, VE||Barnett, BA||Bauer, G||Baumann, T||Bedeschi, F||Behrends, S||Belforte, S||Bellettini, G||Bellinger, J||Benjamin, D||Benlloch, J||Bensinger, J||Beretvas, A||Berge, JP||Bertolucci, S||Biery, K||Bhadra, S||Binkley, M||Bisello, D||Blair, R||Blocker, C||Bodek, A||Bolognesi, V||Booth, AW||Boswell, C||Brandenburg, G||Brown, D||Buckley-Geer, E||Budd, HS||Busetto, G||Byon-Wagner, A||Byrum, KL||Campagnari, C||Campbell, M||Caner, A||Carey, R||Carithers, W||Carlsmith, D||Carroll, JT||Cashmore, R||Castro, A||Cervelli, F||Chadwick, K||Chapman, J||Chiarelli, G||Chinowsky, W||Cihangir, S||Clark, AG||Cobal, M

publication date

  • June 1993