Summary of pN J/Psi Results

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)*A^a, with "a" depending on x_F and p_t. 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

???

???

???