2021年7月
Pseudorapidity distributions of charged particles as a function of mid- and forward rapidity multiplicities in pp collisions at $$\sqrt{s}$$ = 5.02, 7 and 13 TeV
The European Physical Journal C
- 巻
- 81
- 号
- 7
- 開始ページ
- 630
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1140/epjc/s10052-021-09349-5
- 出版者・発行元
- Springer Science and Business Media LLC
<title>Abstract</title>The multiplicity dependence of the pseudorapidity density of charged particles in proton–proton (pp) collisions at centre-of-mass energies <inline-formula><alternatives><tex-math>$$\sqrt{s}~=~5.02$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mrow>
<mml:msqrt>
<mml:mi>s</mml:mi>
</mml:msqrt>
<mml:mspace />
<mml:mo>=</mml:mo>
<mml:mspace />
<mml:mn>5.02</mml:mn>
</mml:mrow>
</mml:math></alternatives></inline-formula>, 7 and 13 TeV measured by ALICE is reported. The analysis relies on track segments measured in the midrapidity range (<inline-formula><alternatives><tex-math>$$|\eta | < 1.5$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mrow>
<mml:mo>|</mml:mo>
<mml:mi>η</mml:mi>
<mml:mo>|</mml:mo>
<mml:mo><</mml:mo>
<mml:mn>1.5</mml:mn>
</mml:mrow>
</mml:math></alternatives></inline-formula>). Results are presented for inelastic events having at least one charged particle produced in the pseudorapidity interval <inline-formula><alternatives><tex-math>$$|\eta |<1$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mrow>
<mml:mo>|</mml:mo>
<mml:mi>η</mml:mi>
<mml:mo>|</mml:mo>
<mml:mo><</mml:mo>
<mml:mn>1</mml:mn>
</mml:mrow>
</mml:math></alternatives></inline-formula>. The multiplicity dependence of the pseudorapidity density of charged particles is measured with mid- and forward rapidity multiplicity estimators, the latter being less affected by autocorrelations. A detailed comparison with predictions from the PYTHIA 8 and EPOS LHC event generators is also presented. The results can be used to constrain models for particle production as a function of multiplicity in pp collisions.
<mml:mrow>
<mml:msqrt>
<mml:mi>s</mml:mi>
</mml:msqrt>
<mml:mspace />
<mml:mo>=</mml:mo>
<mml:mspace />
<mml:mn>5.02</mml:mn>
</mml:mrow>
</mml:math></alternatives></inline-formula>, 7 and 13 TeV measured by ALICE is reported. The analysis relies on track segments measured in the midrapidity range (<inline-formula><alternatives><tex-math>$$|\eta | < 1.5$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mrow>
<mml:mo>|</mml:mo>
<mml:mi>η</mml:mi>
<mml:mo>|</mml:mo>
<mml:mo><</mml:mo>
<mml:mn>1.5</mml:mn>
</mml:mrow>
</mml:math></alternatives></inline-formula>). Results are presented for inelastic events having at least one charged particle produced in the pseudorapidity interval <inline-formula><alternatives><tex-math>$$|\eta |<1$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mrow>
<mml:mo>|</mml:mo>
<mml:mi>η</mml:mi>
<mml:mo>|</mml:mo>
<mml:mo><</mml:mo>
<mml:mn>1</mml:mn>
</mml:mrow>
</mml:math></alternatives></inline-formula>. The multiplicity dependence of the pseudorapidity density of charged particles is measured with mid- and forward rapidity multiplicity estimators, the latter being less affected by autocorrelations. A detailed comparison with predictions from the PYTHIA 8 and EPOS LHC event generators is also presented. The results can be used to constrain models for particle production as a function of multiplicity in pp collisions.
- リンク情報
- ID情報
-
- DOI : 10.1140/epjc/s10052-021-09349-5
- ISSN : 1434-6044
- eISSN : 1434-6052