First results from CERES/NA45 on low-mass electron pair production in PbAu collisions

Th. Ullrich; G. Agakichiev; R. Baur; P. Braun-Munzinger; F. Ceretto; A. Drees; S. Esumi; U. Faschingbauer; Ch. Fuchs; E. Gatti; P. Glässel; C.P. De Los Heros; P. Holl; Ch. Jung; H. Kraner; B. Lenkeit; M. Messer; Y. Minaev; Y. Panebrattsev; A. Pfeiffer; J. Rak; I. Ravinovich; S. Razin; P. Rehak; M. Sampietro; J. Schukraft; S. Shimanskiy; E. Socol; H.J. Specht; J. Stachel; G. Tel-Zur; I. Tserruya; C. Voigt; C. Weber; J.P. Wessels; J.P. Wurm; V. Yurevich; CERES Collaboration;Th. Ullrich;G. Agakichiev;R. Baur;P. Braun-Munzinger;F. Ceretto;A. Drees;S. Esumi;U. Faschingbauer;Ch. Fuchs;E. Gatti;P. Glässel;C.P. De Los Heros;P. Holl;Ch. Jung;H. Kraner;B. Lenkeit;M. Messer;Y. Minaev;Y. Panebrattsev;A. Pfeiffer;J. Rak;I. Ravinovich;S. Razin;P. Rehak;M. Sampietro;J. Schukraft;S. Shimanskiy;E. Socol;H.J. Specht;J. Stachel;G. Tel-Zur;I. Tserruya;C. Voigt;C. Weber;J.P. Wessels;J.P. Wurm;V. Yurevich;CERES Collaboration;

doi:10.1016/s0375-9474(96)00366-1

First results from CERES/NA45 on low-mass electron pair production in PbAu collisions

Clicks: 116

ID: 270740

1996

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Abstract

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We report preliminary results of the first measurement of low-mass electron pairs in 160 GeV/nucleon PbAu collisions at central rapidities in a wide multiplicity range. This work is the continuation of our systematic studies on pair production in p-Be, p-Au and SAu interactions. The motivation for this effort derives from a new source of lowmass dileptons recently observed in SAu and S-W collisions by CERES and HELIOS/3, respectively. The results obtained in the analysis of the PbAu data confirm our previous finding that pair production in the mass range 0.2 < mee < 1.5 GeV/c2 is enhanced over the contributions from hadron decays while no significant excess could be observed for mee ≲ 2mπ. A comparison of the results for different multiplicity bins favours a non-linear dependence of the e+e−-yield on the accompanying charged particle densities.

Reference Key	collaboration1996nuclearfirst Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors	Th. Ullrich,G. Agakichiev,R. Baur,P. Braun-Munzinger,F. Ceretto,A. Drees,S. Esumi,U. Faschingbauer,Ch. Fuchs,E. Gatti,P. Glässel,C.P. De Los Heros,P. Holl,Ch. Jung,H. Kraner,B. Lenkeit,M. Messer,Y. Minaev,Y. Panebrattsev,A. Pfeiffer,J. Rak,I. Ravinovich,S. Razin,P. Rehak,M. Sampietro,J. Schukraft,S. Shimanskiy,E. Socol,H.J. Specht,J. Stachel,G. Tel-Zur,I. Tserruya,C. Voigt,C. Weber,J.P. Wessels,J.P. Wurm,V. Yurevich,CERES Collaboration;Th. Ullrich;G. Agakichiev;R. Baur;P. Braun-Munzinger;F. Ceretto;A. Drees;S. Esumi;U. Faschingbauer;Ch. Fuchs;E. Gatti;P. Glässel;C.P. De Los Heros;P. Holl;Ch. Jung;H. Kraner;B. Lenkeit;M. Messer;Y. Minaev;Y. Panebrattsev;A. Pfeiffer;J. Rak;I. Ravinovich;S. Razin;P. Rehak;M. Sampietro;J. Schukraft;S. Shimanskiy;E. Socol;H.J. Specht;J. Stachel;G. Tel-Zur;I. Tserruya;C. Voigt;C. Weber;J.P. Wessels;J.P. Wurm;V. Yurevich;CERES Collaboration;
Journal	nuclear physics a
Year	1996
DOI	10.1016/s0375-9474(96)00366-1 Searching for DOI...
URL	https://sciprofiles.com/publication/view/3f6a13823cf286ffed756acff6157c69 https://doi.org/10.1016/s0375-9474(96)00366-1
Keywords	pair production au collisions mass electron electron pair low mass results from ceres/na45

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