Summary of pN J/Psi Results

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The purpose of these tables is to collect the most important information about the experiments and their results working in the area of J/Psi production in proton Nucleon scattering. This has to be extended to open charm. Please feel free to make any comments of how to improve this summary.
The nuclear dependence of the cross section is parametrized as sig(A) = sig(0)*Aa, with "a" depending on xF and pt. The cross sections quoted are given in nb / nucleon or pb / nucleon, which corresponds to sig(0). Usually the groups use the a-value measured by themselves for this correction. However, not all papers quote the a-value used.
 
 
 
Experiment Status Detector Documentation
E537 / FNAL Run stopped 2/82   collaboration, papers,detector: NIM A242:215,1986
E605 / FNAL Run stopped 8/85   homepage, collaboration, papers, detector
E771 / FNAL Run stopped 1/92 Based on FNAL-705, + 10k Si detector + single and dimuon trigger homepage, collaboration, papers, detector
E772 / FNAL Run stopped 2/88 Used FNAL-605 spectrometer homepage, collaboration, papers
E789 / FNAL Run stopped 1/92 Based on FNAL-605/772 spectrometer + upgraded trigger processor homepage, collaboration, papers
E866/NuSea /FNAL Run stopped 1/92 Based on FNAL-605/772/789 spectrometer + new drift chambers+new trigger system homepage, collaboration, papers
NA3 /CERN Run stopped 9/84   collaboration, papers
NA38 /CERN Run stopped 5/92 Based on CERN NA10 di-muon spectrometer homepage, collaboration, papers
NA50 /CERN Run stopped 98 Based on CERN NA10 di-muon spectrometer homepage, collaboration, papers
NA51 /CERN Run stopped 7/92 Based on CERN NA38 di-muon spectrometer homepage, collaboration
NA60 /CERN Will start in 2001 Based on CERN NA50 + Si pixel telescope homepage, collaboration, papers, proposal

 
 

Experiment

Beam

sqrt(s)
xF -range pt -range

J/Psi

Psi'

 Y  

 B   

Drell-Yan

Results

Detector  

Papers
 E537 125 GeV ap, pi- Be, Cu, W 15.4 0. - 0.8 < 2.5 GeV/c 52k         A-dependence: a(pi-)=0.87±0.02, a(ap)= 0.90±0.03; Psi(pi-):88 nb, Psi(ap): 65 nb   PRL60,2121
 E771 800 GeV p Si 38.7 -0.05 - 0.25 < 3.5 GeV/c 11660 218 10 ± 4     Psi:375±30 nb 
Psi':46±10 nb 
Y(1+2S):8±3.4 pb 
~2 MHz FNAL-Pub-95-297, PRD55,3927
 E771 800 GeV p Si 38.7 > 0 ?? Chic1: 33 ± 9 Chic2: 33 ± 10       Chic1:263±76 nb 
Chic2:498±158 nb 
- PRD62,32006
 E771 800 GeV p Si 38.7 -0.25 - 0.5 < 3.5 GeV/c       6   B: 43+28-18 nb   PRL82,41
 E772 800 GeV p D,C,Ca,Fe,W 38.7 0.15 - 0.65 < 2.5 GeV/c 100 k 12 k       A-dependence:
a = 0.92±0.008
  PRL66,133
 E772 800 GeV p H,C,Ca,Fe,W 38.7 0 - 0.6 < 4 GeV/c     25 k   450 k M>4 GeV A-dependence: a(Y)=0.962±0.006, a(DY)=1.0   PRL66,2285, PRL64,2479
 E789 beam dump 800 GeV p Be,Cu 38.7 0.3 - 0.95 < 5 GeV/c seen         A-dependence: 
a = 0.92
Beam dump PRL72,1318
 E789 beauty 800 GeV p Au 38.7 -0.1 - 0.1 < 2.6 GeV/c 113 k 1824       Psi:442±88 nb 
Psi':75±23 nb
+16 Si detec., 
~ 50MHz
PRD52,1307
 E789 beauty 800 GeV p Au 38.7 -0.1 - 0.1 < 2.6 GeV/c 71 k 1149±49   19 ± 5   B: 5.7±2 nb +16 Si detec., 
~ 50MHz
PRL74,3118
 E789  800 GeV p Be,C,W 38.7 -0.1 - 0.1 < 1 GeV/c ~ 2 k         A-dependence: a = 0.89±0.02   PRD52,4251
 E866/NuSea 800 GeV p Be,Fe,W 38.7 -0.1 - 0.93 < 4 GeV/c 3000k 100k       A-dependence: a(xF, pt) Beam dump PRL84,3256; Thesis
 NA38 450 GeV p C,Al,Cu,W 29.1 ??? < 4 GeV/c 48k         Psi:96.7±1 nb; 
Psi':10.1±0.07 nb; A-dependence: a=0.919±0.015
  PLB444,516; PLB449,128
 NA50 158 GeV Pb Pb 17.4 0<ycms<1 ??? 190k       2100 
M>4.2 GeV
Psi:33.5±2.5 nb; 
DY:134±9.9 pb; 
anomalous J/Psi sup.: 0.71±0.03
  PLB410,327; PLB410,337; PLB450,456; PLB477,28; CERN-TH96-328
 NA51 450 GeV p H2, D2 29.1 -0.18 - 0.14 ??? 613k 12k     4030 
4.3<M<8 GeV
Psi:93.5±1 nb; 
Psi':8.3±0.4nb; 
DY:25.3±1 pb
  PLB438,35
 NA60 450 GeV p, In, Pb  ??? ??? ???                

Edited by J. Spengler, latest update 31/05/01