The charged particle transverse momentum (p T) spectra are presented for pp collisions at s√=0.9 and 7 TeV. The data samples were collected with the CMS detector at the LHC and correspond to integrated luminosities of 231 μb−1 and 2.96 pb−1, respectively. Calorimeter-based high-transverse-energy triggers are employed to enhance the statistical reach of the high-p T measurements. The results are compared with leading and next-to-leading order QCD and with an empirical scaling of measurements at different collision energies using the scaling variable xT≡2pT/s√ over the p T range up to 200 GeV/c. Using a combination of x T scaling and direct interpolation at fixed p T, a reference transverse momentum spectrum at s√=2.76 TeV is constructed, which can be used for studying high-p T particle suppression in the dense QCD medium produced in heavy-ion collisions at that centre-of-mass energy.

V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, M. DRAGICEVIC, et al. (2011). Charged particle transverse momentum spectra in pp collisions at sqrt(s)=0.9 and 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 08, 086-125 [10.1007/JHEP08(2011)086].

Charged particle transverse momentum spectra in pp collisions at sqrt(s)=0.9 and 7 TeV

BONACORSI, DANIELE;BRAIBANT, SYLVIE;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;MENEGHELLI, MARCO;NAVARRIA, FRANCESCO LUIGI;ROSSI, ANTONIO MARIA;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;C. BATTILANA;GUIDUCCI, LUIGI;PRIMAVERA, FEDERICA;BRIGLIADORI, LUCA
2011

Abstract

The charged particle transverse momentum (p T) spectra are presented for pp collisions at s√=0.9 and 7 TeV. The data samples were collected with the CMS detector at the LHC and correspond to integrated luminosities of 231 μb−1 and 2.96 pb−1, respectively. Calorimeter-based high-transverse-energy triggers are employed to enhance the statistical reach of the high-p T measurements. The results are compared with leading and next-to-leading order QCD and with an empirical scaling of measurements at different collision energies using the scaling variable xT≡2pT/s√ over the p T range up to 200 GeV/c. Using a combination of x T scaling and direct interpolation at fixed p T, a reference transverse momentum spectrum at s√=2.76 TeV is constructed, which can be used for studying high-p T particle suppression in the dense QCD medium produced in heavy-ion collisions at that centre-of-mass energy.
2011
V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, M. DRAGICEVIC, et al. (2011). Charged particle transverse momentum spectra in pp collisions at sqrt(s)=0.9 and 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 08, 086-125 [10.1007/JHEP08(2011)086].
V. KHACHATRYAN; A.M. SIRUNYAN; A. TUMASYAN; W. ADAM; T. BERGAUER; M. DRAGICEVIC; J. ER¨O; C. FABJAN; M. FRIEDL; R. FRUHWIRTH; V.M. GHETE; J. HAMMER; S...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/119171
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