Transverse momentum spectra of charged particles in proton-proton collisions at root s=900 GeV with ALICE at the LHC


Aamodt K., Abel N., Abeysekara U., Abrahantes Quintana A., Abramyan A., Adamova D., ...Daha Fazla

PHYSICS LETTERS B, cilt.693, sa.2, ss.53-68, 2010 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 693 Sayı: 2
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.physletb.2010.08.026
  • Dergi Adı: PHYSICS LETTERS B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.53-68
  • Anahtar Kelimeler: ALICE, LHC, pp, 900 GeV, Transverse momentum, PYTHIA, MULTIPLICITIES, DISTRIBUTIONS, DIFFRACTION, DEPENDENCE
  • Bursa Uludağ Üniversitesi Adresli: Hayır

Özet

The inclusive charged particle transverse momentum distribution is measured in proton-proton collisions at root s = 900 GeV at the LHC using the ALICE detector. The measurement is performed in the central pseudorapidity region (vertical bar eta vertical bar < 0.8) over the transverse momentum range 0.15 < p(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 vertical bar eta vertical bar < 0.8 is < p(T)>(INEL) = 0.483 +/- 0.001 (stat.) +/- 0.007 (syst.) GeV/c and < p(T)>(NSD) = 0.489 +/- 0.001 (stat.) +/- 0.007 (syst.) GeV/c, respectively. The data exhibit a slightly larger < p(T)> than measurements in wider pseudorapidity intervals. The results are compared to simulations with the Monte Carlo event generators PYTHIA and PHOJET. (C) 2010 Published by Elsevier B.V.