Search for Pomeron--Pomeron-2$pi$ events in 205 GeV/c $pi$$sup -$p interactions
Abstract
Pomeron- pomeron-2 pi vertices were sought in the reaction pi /sup -/p yields pi /sup -/ pi /sup +/ pi /sup -/p at 205 GeV/c. From a sample of 1 86 of these events, about 2/3 were extracted for which the rapidity ordering of the four outgoing particles makes them candidates for the double-Pomeron exchange process (i.e., the fastest and the slowest particle are respectively a pi /sup -/ and a proton). A separation from single-Pomeron processes was attempted with the help of a rapidity triangle plot. The number of possible double-Pomeron-type events was also estimated from a Regge-propagator fit to the nonhomogeneous distribution of the events within this triangle. The number of such events obtained by either method gives a cross section upper limit of 85 mu b for double-Pomeron exchange, consistent with the predictions of a pion-pole dominance model. (auth)
- Authors:
- Publication Date:
- Research Org.:
- California Univ., Berkeley (USA). Lawrence Berkeley Lab.
- OSTI Identifier:
- 4381606
- Report Number(s):
- LBL-2106
- NSA Number:
- NSA-29-016915
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: Orig. Receipt Date: 30-JUN-74
- Country of Publication:
- United States
- Language:
- English
- Subject:
- N64140* -Physics (High Energy)-Particle Interactions & Properties (Experimental)-Strong (Meson-induced); *PION-PROTON INTERACTIONS- POMERANCHUK PARTICLES; BOUNDARY CONDITIONS; CROSS SECTIONS; DIAGRAMS; DISTRIBUTION; EXCHANGE INTERACTIONS; GEV RANGE 100-1000; LINEAR MOMENTUM; PIONS; PIONS MINUS; PIONS PLUS; PROPAGATOR; REGGE POLES
Citation Formats
Chew, D.M., Abrams, G.S., and Bingham, H.H. Search for Pomeron--Pomeron-2$pi$ events in 205 GeV/c $pi$$sup -$p interactions. United States: N. p., 1973.
Web. doi:10.2172/4381606.
Chew, D.M., Abrams, G.S., & Bingham, H.H. Search for Pomeron--Pomeron-2$pi$ events in 205 GeV/c $pi$$sup -$p interactions. United States. doi:10.2172/4381606.
Chew, D.M., Abrams, G.S., and Bingham, H.H. Wed .
"Search for Pomeron--Pomeron-2$pi$ events in 205 GeV/c $pi$$sup -$p interactions". United States.
doi:10.2172/4381606. https://www.osti.gov/servlets/purl/4381606.
@article{osti_4381606,
title = {Search for Pomeron--Pomeron-2$pi$ events in 205 GeV/c $pi$$sup -$p interactions},
author = {Chew, D.M. and Abrams, G.S. and Bingham, H.H.},
abstractNote = {Pomeron- pomeron-2 pi vertices were sought in the reaction pi /sup -/p yields pi /sup -/ pi /sup +/ pi /sup -/p at 205 GeV/c. From a sample of 1 86 of these events, about 2/3 were extracted for which the rapidity ordering of the four outgoing particles makes them candidates for the double-Pomeron exchange process (i.e., the fastest and the slowest particle are respectively a pi /sup -/ and a proton). A separation from single-Pomeron processes was attempted with the help of a rapidity triangle plot. The number of possible double-Pomeron-type events was also estimated from a Regge-propagator fit to the nonhomogeneous distribution of the events within this triangle. The number of such events obtained by either method gives a cross section upper limit of 85 mu b for double-Pomeron exchange, consistent with the predictions of a pion-pole dominance model. (auth)},
doi = {10.2172/4381606},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Aug 01 00:00:00 EDT 1973},
month = {Wed Aug 01 00:00:00 EDT 1973}
}