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Memo CP-C/289

DATE:
TO:
FROM:
SUBJECT:

June 28, 2001
Distribution
V. McLane
4-momentum transfer

I have come across some data given in three old references given as dsigma/dt (4-momentumtransfer). Data for 2 of these are given as a function of angle as well as 4-momentum transfer (-t),
where –t = q2. Since these are old data and I did not find any new data in this form, I could compile
them as DA,,MSC. The third set, however, is given as a function of –t in units of (Gev c)2. (Ifanyone else has encountered such data, please let me know).
Therefore, I propose we add a new code DT to Dictionary 32 for such data, and a field heading –tor q-SQ to Dictionary 24. Appropriate units will also be needed.
Proposed dictionary additions follow.

Distribution:
M. Chiba, Sapporo
F. E. Chukreev, CAJaD
S. Dunaeva, Sarov
O. Gritzay, KINR
K. Kato, JCPDGM. Kellett, NEADB
V. N. Manokhin, CJD

S. Maev, CJD
O. Schwerer, NDS
S. Takács, ATOMKI
F. T. Tárkányi, ATOMKI
V. Varlamov, CDFE
Zhuang Youxiang, CNDC
NNDC FileDictionary 24 (Data Headings)-t
4-momentum transfer squared (= q**2)
Dictionary 25 (UNITS)
GEV2/C2(GeV/c)**2
MB/GEV2/C2
Miilibarns/(GeV*c)**2

EC2
D4

Dictionary 32 (Parameters)DT
Differential with 4-momentum transfer squared of outgoing particles
Dictionary 36 (Quantities),DT
Differential c/s with respect to 4-momentum transfer squared.

I have attached a sample coded entry.

TRANSENTRY
SUBENTBIB
INSTITUTE
REFERENCE
AUTHOR

20010711
10000 00C0128
20010711
C0128 01C0128001
20010711
C0128 111525
C0128 12(1USACLA,1USATEX,1USALAS,1USAMIN,1USABNL)
C0128 13(J,PL/B,78,205,197809)
C0128 14(J.Fong,T.S.Bauer,G.Igo,G.Pauletta,R.Ridge,R.Rolfe,
C0128 1
5
J.Soukup,C.A.Whitten Jr,G.W.Hoffmann,N.M.Hintz,
C0128 16
M.A.Oothoudt,G.S.Blanpied,R.P.Liljestrand,T.Kozlowski)C0128 1
7TITLE
p-4He elastic scattering at 788 MeV.
C0128 18FACILITY(MESON,1USALAS) LAMPF.
C0128 1
9INC-SOURCE (POLIS)
C0128 110SAMPLE
Liquid helium in cylindrical flask.
C0128 1
11METHOD(PHD,TOF)
C0128 112DETECTOR(MAGSP) High resolution spectrometer.
C0128 113(TELES) Beam-target interaction monitored by
C0128 1
14
scintillator telescopes placed at 45 and 115 degrees C0128 115with respect to beam direction.
C0128 116
Beam intensity monitored by 3 ionization chambers and C0128 117a secondary emission monitor.
C0128 118
Horizontal beam profile monitored by multiwire chamber C0128 119at backward angles.
C0128 120
MONITOR(2-HE-4(P,EL)2-HE-4,,DA)C0128 1
21
MONIT-REF (,R.KLEM+,J,PL/B,70,155,1977)
C0128 122
CORRECTION Corrected for background.
C0128 123
ERR-ANALYS (ERR-S) Statistical uncertainty.
C0128 1
24
Scale accuracy 20%.
C0128 1
25
STATUS
Data received by email from L. Ray, 12 August 1999.
C0128 126
HISTORY(19990816C) VM
C0128 127
ENDBIB
25
0C0128 128COMMON
13C0128 129ENC0128 130MEVC0128 131788.
C0128 132ENDCOMMON
30C0128 133ENDSUBENT
320C0128 199999
SUBENT
C0128002
20010711
C0128 21BIB
23C0128 22REACTION(2-HE-4(P,EL)2-HE-4,,DT)C0128 23EN-SEC
Momentum given corresponds to angles of 13.3 - 165.5 C0128 24degrees.
C0128 25ENDBIB
30C0128 26NOCOMMON
00C0128 27DATA
3267C0128 28-t
DATA-CM
ERR-S
C0128 29GEV2/C2
MB/GEV2/C2 MB/GEV2/C2
C0128 2100.1110.394E+02
0.79E+00
C0128 2110.1140.364E+02
0.73E+00
C0128 2120.1180.330E+02
0.66E+00
C0128 2130.1210.307E+02
0.61E+00
C0128 2140.124
0.271E+02
0.54E+00
C0128 2150.1270.247E+02
0.49E+00
C0128 2160.1310.223E+02
0.45E+00
C0128 2
170.134
0.195E+02
0.39E+00
C0128 2180.1370.178E+02
0.36E+00
C0128 219…
4.192
0.632E-04
0.57E-05
C0128 2 277
ENDDATA
269
0C0128 2 278ENDSUBENT
277
0C0128 299999
ENDENTRY
20C012899999999
ENDTRANS
10Z999999999999