Measurement of the inclusive isolated photon production cross section in $$\text{ p }\text{ p }$$ collisions at $$\sqrt{s}=7$$ TeV

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<jats:title>Abstract</jats:title> <jats:p>The production cross section of inclusive isolated photons has been measured by the ALICE experiment at the CERN LHC in pp collisions at a centre-of-momentum energy of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sqrt{s}=$$</jats: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:mo>=</mml:mo></mml:mrow></mml:math></jats:alternatives></jats:inline-formula> 7 TeV. The measurement is performed with the electromagnetic calorimeter EMCal and the central tracking detectors, covering a range of <jats:inline-formula><jats:alternatives><jats:tex-math>$$|\eta |<0.27$$</jats: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>0.27</mml:mn></mml:mrow></mml:math></jats:alternatives></jats:inline-formula> in pseudorapidity and a transverse momentum range of <jats:inline-formula><jats:alternatives><jats:tex-math>$$ 10< p_\mathrm {T}^{\gamma }< 60~\mathrm {GeV}/c$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>10</mml:mn><mml:mo><</mml:mo><mml:msubsup><mml:mi>p</mml:mi><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mi>γ</mml:mi></mml:msubsup><mml:mo><</mml:mo><mml:mn>60</mml:mn><mml:mspace /><mml:mi>GeV</mml:mi><mml:mo>/</mml:mo><mml:mi>c</mml:mi></mml:mrow></mml:math></jats:alternatives></jats:inline-formula>. The result extends the <jats:inline-formula><jats:alternatives><jats:tex-math>$$p_\mathrm {T}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>p</mml:mi><mml:mi>T</mml:mi></mml:msub></mml:math></jats:alternatives></jats:inline-formula> coverage of previously published results of the ATLAS and CMS experiments at the same collision energy to smaller <jats:inline-formula><jats:alternatives><jats:tex-math>$$p_\mathrm {T}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>p</mml:mi><mml:mi>T</mml:mi></mml:msub></mml:math></jats:alternatives></jats:inline-formula>. The measurement is compared to next-to-leading order perturbative QCD calculations and to the results from the ATLAS and CMS experiments. All measurements and theory predictions are in agreement with each other.</jats:p>

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