Measurement of the $J/\psi$ meson and $b-$hadron production cross sections in $p\bar{p}$ collisions at $\sqrt{s} = 1960$ GeV

Acosta, D.; Adelman, J.; Affolder, T.; Akimoto, T.; Albrow, M.G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.

doi:10.1103/PhysRevD.71.032001

Measurement of the $J/\psi$ meson and $b-$ hadron production cross sections in $p\bar{p}$ collisions at $\sqrt{s} = 1960$ GeV

CDF

Collaboration

Dec, 2004

59 pages

Published in:

Phys.Rev.D 71 (2005) 032001

e-Print:

hep-ex/0412071 [hep-ex]

DOI:

10.1103/PhysRevD.71.032001

Report number:

FERMILAB-PUB-04-440-E

Experiments:

FNAL-E-0830

View in:

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reference search1,182 citations

Citations per year

Abstract:

We present a new measurement of the inclusive and differential production cross sections of

J/\psi

mesons and

b

-hadrons in proton-antiproton collisions at

\sqrt{s}=1960

GeV. The data correspond to an integrated luminosity of 39.7 pb

^{-1}

collected by the CDF Run II detector. We find the integrated cross section for inclusive

J/\psi

production for all transverse momenta from 0 to 20 GeV/

c

in the rapidity range

|y|<0.6

to be

4.08 \pm 0.02 (stat)^{+0.36}_{-0.33} (syst) \mu {\rm b}

. We separate the fraction of

J/\psi

events from the decay of the long-lived

b

-hadrons using the lifetime distribution in all events with

p_T(J/\psi) > 1.25

GeV/

c

. We find the total cross section for

b

-hadrons, including both hadrons and anti-hadrons, decaying to

J/\psi

with transverse momenta greater than 1.25 GeV/

c

in the rapidity range

|y(J/\psi)|<0.6

, is

0.330 \pm 0.005 (stat) ^{+0.036}_{-0.033} (syst) ~\mu{\rm b}

. Using a Monte Carlo simulation of the decay kinematics of

b

-hadrons to all final states containing a

J/\psi

, we extract the first measurement of the total single

b

-hadron cross section down to zero transverse momentum at

\sqrt{s}=1960

GeV. We find the total single

b

-hadron cross section integrated over all transverse momenta for

b

-hadrons in the rapidity range

|y|<0.6

to be

17.6 \pm 0.4 (stat)^{+2.5}_{-2.3} (syst) \mu{\rm b}

.

13.20.Gd
14.40.Gx
13.85.Qk
12.38.Qk
23.85.Qk
anti-p p: colliding beams
anti-p p: inclusive reaction
J/psi(3100): hadroproduction
bottom particle: hadroproduction
bottom particle: hadronic decay

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Measurement of the J/ψJ/\psiJ/ψ meson and b−b-b−hadron production cross sections in ppˉp\bar{p}ppˉ​ collisions at s=1960\sqrt{s} = 1960s​=1960 GeV

Citations per year

Measurement of the $J/\psi$ meson and $b-$ hadron production cross sections in $p\bar{p}$ collisions at $\sqrt{s} = 1960$ GeV