The Near-Threshold Production of Phi Mesons in pp Collisions
M. Hartmann, Y. Maeda, I. Keshelashvilli, H. R. Koch, S. Mikirtytchiants, S. Barsov, W. Borgs, M. Buescher, V. I. Dimitrov, S. Dymov, V. Hejny, V. Kleber, V. Koptev, P. Kulessa, T. Mersmann, S. Merzliakov, A. Mussgiller, M. Nekipelov, M. Nioradze, H. Ohm, K. Pysz, R. Schleichert, H. J. Stein, H. Stroeher, K. -H. Watzlawik, P. Wuestner
Abstract
The pp->pp phi reaction has been studied at the Cooler Synchrotron COSY-Juelich, using the internal beam and ANKE facility. Total cross sections have been determined at three excess energies epsilon near the production threshold. The differential cross section closest to threshold at epsilon=18.5 MeV exhibits a clear S-wave dominance as well as a noticeable effect due to the proton-proton final state interaction. Taken together with data for pp omega-production, a significant enhancement of the phi/omega ratio of a factor 8 is found compared to predictions based on the Okubo-Zweig-Iizuka rule.
Create a lesson
Related papers
Accelerating Optical Photon Simulation in DUNE with Opticks
Ilker Parmaksiz, Aaron Higuera, Laura Paulucci et al.
Search for high-mass resonances in photon-jet final states using 140 fb-1 of pp collisions at s = 13 TeV with the ATLAS detector
ATLAS Collaboration
Efficient binned profile likelihood minimization for precision measurements with RABBIT
David Walter, Josh Bendavid, Kenneth Long
A Weighting Method for Incorporating Mass Resolution Effects in Amplitude Analysis
Benhou Xiang, Wenqian Zheng, Hongxun Yang et al.
A High Performance Partial Wave Analysis Framework for Hadron Spectroscopy
Benhou Xiang, Shuangshi Fang, Beijiang Liu
Measurement of tZq inclusive and differential cross-sections in pp collisions at s = 13~TeV with the ATLAS detector
ATLAS Collaboration