Transverse momentum spectra of charged particles in proton–proton collisions at with ALICE at the LHC
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- 作者：ALICE Collaboration ; K. Aamodt ; N. Abel ; U. Abeysekara ; A. Abrahantes Quintana ; A. Abramyan ; D. Adamová ; M.M. Aggarwal ; G. Aglieri Rinella ; A.G. Agocs ; S. Aguilar Salazar ; Z. Ahammed ; A. Ahmad ; N
- 关键词：ALICE ; LHC ; pp ; 900 GeV ; Transverse momentum ; PYTHIA
- 刊名：Physics Letters B
- 出版年：2010
- 出版时间：27 September 2010
- 年：2010
- 卷：693
- 期：2
- 页码：53-68
- 全文大小：575 K
文摘
The inclusive charged particle transverse momentum distribution is measured in proton–proton collisions at at the LHC using the ALICE detector. The measurement is performed in the central pseudorapidity region (η<0.8) over the transverse momentum range 0.15<pT<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 η<0.8 is pTINEL=0.483±0.001 (stat.)±0.007 (syst.) GeV/c and pTNSD=0.489±0.001 (stat.)±0.007 (syst.) GeV/c, respectively. The data exhibit a slightly larger pT than measurements in wider pseudorapidity intervals. The results are compared to simulations with the Monte Carlo event generators PYTHIA and PHOJET.