In physics, the pomeron is a Regge trajectory — a family of particles with increasing spin — postulated in 1961 to explain the slowly rising cross section of hadronic collisions at high energies. It is named after Isaak Pomeranchuk.
Overview<!--'BFKL pomeron' and 'Rapidity gap' redirect here-->
While other trajectories lead to falling cross sections, the pomeron can lead to logarithmically rising cross sections — which, experimentally, are approximately constant ones. The identification of the pomeron and the prediction of its properties was a major success of the Regge theory of strong interaction phenomenology. In later years, a Balitsky–Fadin–Kuraev–Lipatov (BFKL) pomeron<!--boldface per WP:R#PLA--> Odderons exist in QCD as a compound state of three reggeized gluons. Potentially theorized in 2015. It was potentially observed only in 2017 by the TOTEM experiment at the LHC.
String theory
In early particle physics, the 'pomeron sector' was what is now called the 'closed string sector' while what was called the 'reggeon sector' is now the 'open string theory'.
See also
- Giuseppe Cocconi
- Tamás Csörgő
References
Further reading
External links
- Pomerons at Fermilab