Higher excitations of {omega} and {phi} in dilepton spectra

Journal Article · Fri Dec 01 04:00:00 EST 1995 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.52.6297· OSTI ID:147643

Haglin, K ^[1]; Gale, C ^[2]

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1. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321 (United States)
2. Physics Department, McGill University, 3600 University Street, Montreal, Quebec, H3A 2T8 (Canada)

We consider lepton pair production via two-hadron annihilation through various isoscalar vector mesons within hot, baryon-free matter. This is tantamount to constructing effective form factors which we model using a vector-meson-dominance approach and compare with experiment. In particular, we consider the reactions {pi}{pi}{r_arrow}{ital e}{sup +}{ital e}{sup {minus}} and {ital {bar K}K}{sup *}(892)+c.c.{r_arrow}{ital e}{sup +}{ital e}{sup {minus}}. We find that {omega}(1390) and {phi}(1680) are visible in the mass spectrum for the thermal production rate above the {pi}{sup +}{pi}{sup {minus}}{r_arrow}{ital e}{sup +}{ital e}{sup {minus}} tail and even above the {pi}{ital a}{sub 1}{r_arrow}{ital e}{sup +}{ital e}{sup {minus}} results, both of which are considered important in their respective mass regions.

• OSTI ID: 147643
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 11 Vol. 52; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANNIHILATION
EXCITATION
FORM FACTORS
HADRON-HADRON INTERACTIONS
LEPTONS
MASS SPECTRA
OMEGA PARTICLES
PAIR PRODUCTION
PHI-1680 MESONS
PIONS
VECTOR DOMINANCE MODEL
VECTOR MESONS