The Tsallis distribution at large transverse momenta
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چکیده
The charged particle transverse momentum (pT ) spectra measured by the ATLAS and CMS collaborations for proton–proton collisions at √ s = 0.9 and 7 TeV have been studied using Tsallis thermodynamics. A thermodynamically consistent form of the Tsallis distribution is used for fitting the transverse momentum spectra at mid-rapidity. It is found that the fits based on the proposed distribution are working over 14 orders of magnitude with pT values up to 200 GeV/c and this gives a value of χ2/NDF of 0.52/24 for the CMS data at 7 TeV. The values for dN dy |y=0 as a function of centerof-mass energy obtained using a Tsallis distribution for both ATLAS and CMS data sets are presented and discussed.
منابع مشابه
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The charged particle transverse momentum (pT ) spectra measured by the ATLAS and CMS collaborations in proton proton collisions at √ s = 0.9 and 7 TeV have been studied using Tsallis thermodynamics. A thermodynamically consistent form of the Tsallis distribution is used for fitting the transverse momentum spectra at mid-rapidity. It is found that the fits based on the proposed distribution prov...
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تاریخ انتشار 2015