Transverse Momentum Spectra of Charged Particles in Proton-Proton Collisions at s = 900 GeV with ALICE at the LHC

Journal Article · Fri Jan 01 00:00:00 EST 2010 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2010.08.026· OSTI ID:1006458

Aamodt, K. ^[1]; Awes, Terry C ^[2]; Enokizono, Akitomo ^[3]; Silvermyr, David O ^[2]; The, ALICE ^[4]

---

1. University of Oslo, Norway
2. ORNL
3. Oak Ridge National Laboratory (ORNL)
4. Collaboration affiliations

The inclusive charged particle transverse momentum distribution is measured in proton-proton collisions at {radical}{ovr s} = 900 GeV at the LHC using the ALICE detector. The measurement is performed in the central pseudorapidity region (|{eta}|<0.8) over the transverse momentum range 0.15<p{sub T}<10 GeV/c. The correlation between transverse momentum and particle multiplicity is also studied. Results are presented for inelastic (INEL) and non-single-diffractive (NSD) events. The average transverse momentum for |{eta}|<0.8 is {l_angle}p{sub T}{r_angle}{sub INEL} = 0.483{+-}0.001 (stat.){+-}0.007 (syst.) GeV/c and {l_angle}p{sub T}{r_angle}{sub NSD} = 0.489{+-}0.001 (stat.){+-}0.007 (syst.) GeV/c, respectively. The data exhibit a slightly larger {l_angle}p{sub T}{r_angle} than measurements in wider pseudorapidity intervals. The results compared to simulations with the Monte Carlo event generators PYTHIA and PHOJET.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1006458
• Journal Information: Physics Letters B, Vol. 693, Issue 2; ISSN 0370-2693
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALICE
CHARGED PARTICLES
COLLISIONS
COMPARATIVE EVALUATIONS
CORRELATIONS
DATA
DISTRIBUTION
GEV RANGE 100-1000
INEEL
MULTIPLICITY
PARTICLE RAPIDITY
PARTICLES
PROTON-PROTON INTERACTIONS
RANGE
SPECTRA
TRANSVERSE MOMENTUM