Using the Tsallis distribution for hadron spectra in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mi>p</mml:mi></mml:math> collisions: Pions and quarkonia at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>5</mml:mn><mml:mo mathvariant="bold">−</mml:mo><mml:mn>13000</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi></mml:mrow></mml:math>

A thermal model, based on the Tsallis distribution and blast-wave model, is proposed to compute hadron double-differential spectra ${d}^{2}N/d{p}_{\mathrm{T}}dy$ in $pp$ (also high-energy $p\overline{p}$) collisions. It successfully describes the available experimental data on pion and quarkonia [$\ensuremath{\phi}$, $\mathrm{J}/\ensuremath{\psi}$, $\ensuremath{\psi}(2\mathrm{S})$, $\mathrm{\ensuremath{\Upsilon}}$ family] production at energies from $\sqrt{s}=5\text{ }\text{ }\mathrm{GeV}$ to the LHC ones. Simple parametrizations for the $\sqrt{s}$ dependence of the model parameters are provided, allowing predictions for the yields of these particles at new collision energies. The model can be used also for the pion Bose-Einstein correlation studies.

Перевод пока недоступен