Light vector meson production in $pp$ collisions at $\sqrt{s}=7$ TeV

Abelev, B.; Abrahantes Quintana, A.; Adamova, D.; Adare, A.M.; Aggarwal, M.M.; Aglieri Rinella, G.; Agocs, A.G.; Agostinelli, A.; Aguilar Salazar, S.; Ahammed, Z.

doi:10.1016/j.physletb.2012.03.038

Light vector meson production in $pp$ collisions at $\sqrt{s}=7$ TeV

ALICE

Collaboration

Dec, 2011

12 pages

Published in:

Phys.Lett.B 710 (2012) 557-568

Published: Jul 16, 2013

e-Print:

1112.2222 [nucl-ex]

DOI:

10.1016/j.physletb.2012.03.038

Report number:

CERN-PH-EP-2011-196

Experiments:

CERN-LHC-ALICE

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Abstract:

The ALICE experiment has measured low-mass dimuon production in pp collisions at

\sqrt{s}

= 7 TeV in the dimuon rapidity region 2.5 < y < 4. The observed dimuon mass spectrum is described as a superposition of resonance decays (

\eta, \rho, \omega, \eta^{'}, \phi

) into muons and semi-leptonic decays of charmed mesons. The measured production cross sections for

\omega

and

\phi

are

\sigma_\omega (1 < p_t < 5

GeV/c,2.5 < y < 4) = 5.28

\pm

0.54 (stat)

\pm

0.50 (syst) mb and

\sigma_\phi

(1 <

p_t

< 5 GeV/c,2.5 < y < 4)=0.940

\pm

0.084 (stat)

\pm

0.078 (syst) mb. The differential cross sections

d^2\sigma/dy dp_t

are extracted as a function of

p_t

for

\omega

and

\phi

. The ratio between the

\rho

and

\omega

cross section is obtained. Results for the

\phi

are compared with other measurements at the same energy and with predictions by models.

Note:

18 pages, 6 captioned figures, 2 tables, authors from page 13, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/3508

p p: scattering
vector meson: hadroproduction
dimuon: mass spectrum
charmed meson: semileptonic decay
differential cross section
ALICE
background
rapidity dependence
transverse momentum dependence
experimental results

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Light vector meson production in pppppp collisions at s=7\sqrt{s}=7s​=7 TeV

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Light vector meson production in $pp$ collisions at $\sqrt{s}=7$ TeV