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Inclusive J/ψ production at mid-rapidity in pp collisions at s = 5.02 TeV
Ist Teil von
The journal of high energy physics, 2019-10, Vol.2019 (10), p.1-26
Ort / Verlag
Berlin/Heidelberg: Springer Berlin Heidelberg
Erscheinungsjahr
2019
Quelle
Free E-Journal (出版社公開部分のみ)
Beschreibungen/Notizen
A
bstract
Inclusive J
/ψ
production is studied in minimum-bias proton-proton collisions at a centre-of-mass energy of
s
= 5
.
02 TeV by ALICE at the CERN LHC. The measurement is performed at mid-rapidity (
|y| <
0
.
9) in the dielectron decay channel down to zero transverse momentum
p
T
, using a data sample corresponding to an integrated luminosity of
L
int
= 19
.
4
±
0
.
4 nb
−
1
. The measured
p
T
-integrated inclusive J
/ψ
production cross sec- tion is d
σ/
d
y
= 5
.
64
±
0
.
22(stat.)
±
0
.
33(syst.)
±
0
.
12(lumi.)
μ
b. The
p
T
-differential cross section d
2
σ/
d
p
T
d
y
is measured in the
p
T
range 0–10 GeV
/c
and compared with state-of- the-art QCD calculations. The J
/ψ
〈
p
T
〉 and
p
T
2
are extracted and compared with results obtained at other collision energies.