arXiv subjects

L. Gutay

Publications and source records attributed to L. Gutay.

3 recordsLinked to original sources

arXiv2010

Forward Neutron Production at the Fermilab Main Injector

We have measured cross sections for forward neutron production from a variety of targets using proton beams from the Fermilab Main Injector. Measurements were performed for proton beam momenta of 58 GeV/c, 84 GeV/c, and 120 GeV/c. The cross section dependence on the atomic weight (A) of the targets was found to vary as $A^(alpha)$ where $α$ is $0.46\pm0.06$ for a beam momentum of 58 GeV/c and 0.54$\pm$0.05 for 120 GeV/c. The cross sections show reasonable agreement with FLUKA and DPMJET Monte Carlos. Comparisons have also been made with the LAQGSM Monte Carlo.

hep-ex↗

arXiv2010

Charged Kaon Mass Measurement using the Cherenkov Effect

The two most recent and precise measurements of the charged kaon mass use X-rays from kaonic atoms and report uncertainties of 14 ppm and 22 ppm yet differ from each other by 122 ppm. We describe the possibility of an independent mass measurement using the measurement of Cherenkov light from a narrow-band beam of kaons, pions, and protons. This technique was demonstrated using data taken opportunistically by the Main Injector Particle Production experiment at Fermi National Accelerator Laboratory which recorded beams of protons, kaons, and pions ranging in momentum from +37 GeV/c to +63 GeV/c. The measured value is 491.3 +/- 1.7 MeV/c^2, which is within 1.4 sigma of the world average. An improvement of two orders of magnitude in precision would make this technique useful for resolving the ambiguity in the X-ray data and may be achievable in a dedicated experiment.

hep-ex↗

arXiv2003

Experimental evidence for hadron deconfinement in p-p_bar collisions at centre-of-mass energy of 1.8 TeV in the FNAL C0 collider

We have measured deconfined hadronic volumes, 4.4 < V < 13.0 fm^3, produced by one-dimensional(1D) expansion. The volumes are directly proportional to the charged particle pseudorapidity densities 6.75 < dN_C/dn < 20.2. The hadronization temperature is T = 179.5 +/- 5.0 (syst) MeV. The hadronization energy density is epsilon = 1.10 +/- 0.26 GeV/fm^3, corresponding to an excitation of 24.8 +/- 6.2 quark-gluon degrees of freedom.

hep-ex↗