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META

Abreau, M.C.; Barreira, G.P.; Bordalo, P.; Alimi, M.; Bedjidian, M.
Proceedings of the international conference on physics and astrophysics of quark-gluon plasma1988

AbstractAbstract

[en] In this paper, the authors measure the characteristics of muon pairs (continuum and resonates), correlated with the electromagnetic transverse energy E_T produced in the same event, in 200 GeV/nucleon oxygen-uranium and oxygen-copper collisions. The production of J/ψ is investigated and compared to the continuum in different intervals of E_T. The authors observe a relative decrease of the Jψ production with increasing E_T; this suppression is enhanced at low P_T

Primary Subject

NUCLEAR PHYSICS AND RADIATION PHYSICS (G3450)

Source

Sinha, B.; Raha, S; 690 p; ISBN 9971-50-553-3;

; 1988; p. 63-82; World Scientific Pub. Co; Teaneck, NJ (United States); ICPA-QGP '88: international conference on physics and astrophysics of quark-gluon plasma; Bombay (India); 8-12 Feb 1988; CONF-880280--; World Scientific Pub. Co., 687 Hartwell Street, Teaneck, NJ 07666 (USA)

Record Type

Book

Literature Type

Conference

Country of publication

United States

Descriptors (DEI)

COPPER, GEV RANGE 100-1000, INTERACTIONS, J PSI-3097 MESONS, MUON PAIRS, NUCLEON-NUCLEON INTERACTIONS, OXYGEN, PAIR PRODUCTION, PARTICLE PRODUCTION, URANIUM

Descriptors (DEC)

ACTINIDES, BARYON-BARYON INTERACTIONS, BOSONS, CHARMONIUM, ELEMENTARY PARTICLES, ELEMENTS, ENERGY RANGE, GEV RANGE, HADRON-HADRON INTERACTIONS, HADRONS, MESONS, METALS, NONMETALS, PARTICLE INTERACTIONS, QUARKONIUM, TRANSITION ELEMENTS, VECTOR MESONS

Reference NumberReference Number

23013455

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Study of meson production in 200 A.GeV ion collisions using decay muons

Abreu, M.C.; Barreira, G.P.; Bordalo, P.; Alimi, M.; Bedjidian, M.; Baglin, C.; Bussiere, A.; Balditi, A.; Borenstein, S.; Britz, J.
Physics and astrophysics of quark-gluon plasma1988

AbstractAbstract

[en] In this paper the like-sign muon pairs copiously recorded in the high luminosity NA38 experiment are interpreted as resulting from decays of π and K mesons. It is shown that the muon properties reflect the pion and kaon ones. The average transverse momentum is found to be similar for p - U, O¹⁶ - U and S³² - U reactions. The K/π ratio, which indicates strangeness production, is also the same for the three reactions. Both measurements increase slightly with E_T

Primary Subject

ATOMIC AND MOLECULAR PHYSICS (G4500)

Source

Sinha, B.; Raha, S; 690 p; ISBN 9971-50-553-3;

; 1988; p. 83-93; World Scientific Pub. Co; Teaneck, NJ (United States); ICPA-QGP '88: international conference on physics and astrophysics of quark-gluon plasma; Bombay (India); 8-12 Feb 1988; CONF-880280--; World Scientific Pub. Co., 687 Hartwell Street, Teaneck, NJ 07666 (USA)

Record Type

Book

Literature Type

Conference

Country of publication

United States

Descriptors (DEI)

DECAY, GEV RANGE 100-1000, HEAVY ION REACTIONS, KAONS, LUMINOSITY, MUON PAIRS, OXYGEN 16 REACTIONS, PARTICLE PRODUCTION, PARTICLE PROPERTIES, PIONS, STRANGE PARTICLES, STRANGENESS, SULFUR 32 REACTIONS, TRANSVERSE MOMENTUM, URANIUM

Descriptors (DEC)

ACTINIDES, BOSONS, ELEMENTARY PARTICLES, ELEMENTS, ENERGY RANGE, GEV RANGE, HADRONS, LINEAR MOMENTUM, MESONS, METALS, NUCLEAR REACTIONS, OPTICAL PROPERTIES, PHYSICAL PROPERTIES, PSEUDOSCALAR MESONS, STRANGE MESONS

Reference NumberReference Number

23051550

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

The production of J/Ψ in 200 GeV/A oxygen-uranium interactions

Bussiere, A.; Baglin, C.; Guillaud, J.P.; Baldit, A.; Castor, J.; Devaux, A.; Fargeix, J.; Felgeyrolles, X.; Force, P.; Landaud, G.; Borenstein, S.; Busson, P.; Charlot, C.; Chaurand, B.; Kluberg, L.; Romana, A.; Salmeron, R.; Britz, J.; Gorodetzky, P.; Kraus, L.; Linck, I.; Racca, C.
NA38 Collaboration1988

AbstractAbstract

[en] The dimuon production in 200 GeV/nucleon oxygen-uranium interactions is studied by the NA38 Collaboration. The production of J/Ψ, correlated with the transverse energy ET, is investigated and compared to the continuum, as a function of the dimuon mass M and transverse momentum PT. A value of 0.64±0.06 is found for the ratio (Ψ/continuum at high ET)/(Ψ/continuum at low ET), from which the J/Ψ relative suppression can be extracted. This suppression is enhanced at low PT. (orig.)

Primary Subject

NUCLEAR PHYSICS AND RADIATION PHYSICS (A3419)

Source

6. international conference on ultra-relativistic nucleus-nucleus collisions (Quark Matter '87); Nordkirchen (Germany, F.R.); 24-28 Aug 1987

Record Type

Journal Article

Literature Type

Conference; Numerical Data

Journal

Zeitschrift fuer Physik. C, Particles and Fields; ISSN 0170-9739;

; CODEN ZPCFD; v. 38(1/2); p. 117-124

Country of publication

Germany

Descriptors (DEI)

EFFECTIVE MASS, ENERGY SPECTRA, EXPERIMENTAL DATA, INCLUSIVE INTERACTIONS, J PSI-3097 MESONS, MASS SPECTRA, MUON PAIRS, MUONS MINUS, MUONS PLUS, OXYGEN 16 REACTIONS, PAIR PRODUCTION, RELATIVISTIC RANGE, TEV RANGE 01-10, TRANSVERSE MOMENTUM, URANIUM 238 TARGET

Reference NumberReference Number

19049073

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

A study of π and K production in proton-uranium and oxygen-uranium interactions of 200 GeV/A using decay muons

Sonderegger, P.; Abreu, M.C.; Barreira, G.P.; Bordalo, P.; Casaca, A.; Gago, J.M.; Gomes, P.; Lourenco, C.; Maio, A.; Peralta, L.; Pimenta, M.; Ramos, S.; Varela, J.; Baglin, C.; Bussiere, A.; Guilland, J.P.; Borenstein, S.; Busson, P.; Charlot, C.; Chaurand, B.; Kluberg, L.; Romana, A.; Salmeron, R.; Britz, J.; Gorodetzky, P.; Kraus, L.; Linck, I.; Racca, C.; Cases, R.
NA38 Collaboration1988

AbstractAbstract

[en] The like-sign dimuons copiously recorded in the NA38 experiment both in p-U and O-U reactions at 200 GeV/nucleon are interpreted as resulting from decays of π and K mesons in comparable proportions. The ++/-- ratio is large (≅ 1.7) and ascribed to the K⁺ being more copiously produced than the K^-. Both the average transverse momentum and the ++/-- ratio are comparable for p-U and O-U reactions, and both increase only slightly with the transverse energy E_T. (orig.)

Primary Subject

NUCLEAR PHYSICS AND RADIATION PHYSICS (A3419)

Source

6. international conference on ultra-relativistic nucleus-nucleus collisions (Quark Matter '87); Nordkirchen (Germany, F.R.); 24-28 Aug 1987

Record Type

Journal Article

Literature Type

Conference; Numerical Data

Journal

Zeitschrift fuer Physik. C, Particles and Fields; ISSN 0170-9739;

; CODEN ZPCFD; v. 38(1/2); p. 129-133

Country of publication

Germany

Reference NumberReference Number

19049074

INIS VolumeINIS Volume

INIS IssueINIS Issue

PDF

The J/ψ production in ultra-relativistic heavy ions collisions Results from the NA38 experiment

Baglin, C.; Bussiere, A.; Guillaud, J.P.; Staley, F.; Ogren, H.; Sonderegger, P.; Baldit, A.; Castor, J.; Devaux, A.; Fargeix, J.; Felgeyrolles, X.; Force, P.; Landaud, G.; Borenstein, S.; Busson, P.; Charlot, C.; Chaurand, B.; Kluberg, L.; Romana, A.; Salmeron, R.; Abreu, M.C.; Barreira, G.P.; Bordalo, P.; Casaca, A.; Ferraz, A.; Ferreira, R.; Gago, J.M.; Gomes, P.; Maio, A.; Peralta, L.; Alimi, M.; Bedjidian, M.; Contardo, D.; Descroix, E.; Drapier, O.; Grossiord, J.Y.; Guichard, A.; Haroutunian, R.; Pizzi, J.R.; Gerschel, C.; Sinquin, A.; Britz, J.; Gorodetzky, P.; Kraus, L.; Linck, I.; Racca, C.; Cases, R.
NA38 Collaboration
Biennial studies of nuclear physics1989

AbstractAbstract

[en] Muon pairs production together with the correlated transverse energy have been measured with 200 Gev/N incident particles (p, O¹⁶, S³²) bombarding Uranium or Copper targets. With increasing transverse energy a strong J/ψ suppression, relatively to the continuum, has been observed with incident ions. Also, this effect is enhanced at low transverse momentum. These results have been predicted to occur in case of quarks and gluons plasma formation

Primary Subject

ATOMIC AND MOLECULAR PHYSICS (A1230)

Source

Bedjidian, M.; Lyon-1 Univ., 69 - Villeurbanne (France). Inst. de Physique Nucleaire; 392 p; 1989; p. C.1.1-C.1.17; 10. Biennial studies session of nuclear physics; Aussois (France); 6-10 Mar 1989

Record Type

Report

Literature Type

Conference

Report Number

LYCEN--8902

Country of publication

France

Descriptors (DEI)

CERN SPS SYNCHROTRON, COPPER, GEV RANGE 100-1000, HYDROGEN IONS 1 PLUS, ION-ATOM COLLISIONS, J PSI-3097 MESONS, MEV RANGE 01-10, MUON PAIRS, OXYGEN 16 REACTIONS, QUARK MATTER, SULFUR 32 REACTIONS, TARGETS, TRANSVERSE MOMENTUM, URANIUM

Reference NumberReference Number

21080782

Related RecordRelated Record

21080781

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

Dimuon production in collisions of proton, oxygen and sulfur ions on heavy targets at 200 GeV/nucleon; J/Ψ production, π and K distributions

Grossiord, J.Y.; Alimi, M.; Bedjidian, M.; Contardo, D.; Descroix, E.; Drapier, O.; Guichard, A.; Haroutunian, R.; Pizzi, J.R.; Baglin, C.; Bussiere, A.; Guillaud, J.P.; Staley, F.; Borenstein, S.; Busson, P.; Charlot, C.; Chaurand, B.; Kluberg, L.; Romana, A.; Salmeron, R.; Britz, J.; Gorodetzky, P.; Kraus, L.; Linck, I.; Racca, C.; Cases, R.; Ogren, M.; Sonderegger, P.
NA-38 Collaboration1989

AbstractAbstract

[en] The dimuon production in 200 GeV/nucleon O-U, O-Cu, S-U and p-U reactions is studied in function of transverse energy E_T produced by the collision. The J/Ψ production relative to continuum events is suppressed for heavy ion induced reactions when E_T increases. This suppression is enhanced at low transverse momentum. The π and K meson distributions extracted from the data, have, for each reaction, a similar average transverse momentum which increases only slightly with the transverse energy. (orig.)

Primary Subject

NUCLEAR PHYSICS AND RADIATION PHYSICS (A3419)

Secondary Subject

NUCLEAR PHYSICS AND RADIATION PHYSICS (A3415)

Source

7. international conference on ultra-relativistic nucleus-nucleus collisions (Quark Matter '88); Lenox, MA (USA); 26-30 Sep 1988

Record Type

Journal Article

Literature Type

Conference; Numerical Data

Journal

Nuclear Physics, A; ISSN 0375-9474;

; CODEN NUPAB; v. 498 p. 249c-260c

Country of publication

Netherlands

Reference NumberReference Number

20074502

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

The production of J/Ψ in 200 GeV/nucleon oxygen-uranium interactions

Baglin, C.; Bussiere, A.; Guillaud, J.P.; Ogren, H.; Staley, F.; Sonderegger, P.; Abreu, M.C.; Barreira, G.P.; Bordalo, P.; Casaca, A.; Ferraz, A.; Ferreira, R.; Gago, J.M.; Gomes, P.; Lourenco, C.; Maio, A.; Peralta, L.; Pimenta, M.; Ramos, S.; Varela, J.; Gerschel, C.; Sinquin, A.; Borenstein, S.; Busson, P.; Charlot, C.; Chaurand, B.; Kluberg, L.; Romana, A.; Salmeron, R.A.; Britz, J.; Gorodetzky, P.; Kraus, L.; Linck, I.; Racca, C.
NA38 Collaboration1989

AbstractAbstract

[en] The study of oxygen-uranium reactions at 200 GeV/nucleon shows a significant transverse energy dependence of the yield of J/Ψ's relative to muon pairs produced in the mass continuum. This feature, observed for the first time, is in agreement with predictions from quark-gluon plasma formation, although alternative explanations by hadronic effects cannot be ruled out at this stage. (orig.)

Primary Subject

NUCLEAR PHYSICS AND RADIATION PHYSICS (A3419)

Record Type

Journal Article

Literature Type

Numerical Data

Journal

Physics Letters, (Section) B; ISSN 0370-2693;

; CODEN PYLBA; v. 220(3); p. 471-478

Country of publication

Netherlands

Reference NumberReference Number

20047992

INIS VolumeINIS Volume

INIS IssueINIS Issue

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