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The differential production cross section of the ... formula ...(1020) meson in ... formula ... = 7 TeV ... formula ... collisions measured with the ATLAS detector

机译:...(1020)介子在... ... = 7°TeV ...碰撞中的差分产生截面用ATLAS检测器测得

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摘要

A measurement is presented of the ϕ × ℬℛ(ϕ → K+K-) production cross section at s = 7 TeV using pp collision data corresponding to an integrated luminosity of 383 μb-1, collected with the ATLAS experiment at the LHC. Selection of ϕ(1020) mesons is based on the identification of charged kaons by their energy loss in the pixel detector. The differential cross section is measured as a function of the transverse momentum, pT,ϕ, and rapidity, yϕ, of the ϕ(1020) meson in the fiducial region 500   pT,ϕ   1200 MeV, |yϕ|   0.8, kaon pT,K   230 MeV and kaon momentum pK   800 MeV. The integrated ϕ(1020)-meson production cross section in this fiducial range is measured to be σϕ × ℬℛ(ϕ → K+K-) = 570 ± 8 (stat) ± 66 (syst) id="IEq23">± 20 (lumi) id="IEq24">μb.
机译: s = 7TeV,使用了与综合亮度相对应的pp碰撞数据在大型强子对撞机的ATLAS实验中收集到383μb -1 。 ϕ(1020)介子的选择是基于带电钾离子在像素检测器中的能量损耗来识别的。在基准区域500≤pT,≤<1200 MeV,| yϕ |时,测量横截面随ϕ(1020)介子的横向动量pT,ϕ和速度yϕ的函数。 <0.8,kaon p T, K p K <800 MeV。在此基准范围内的集成 ϕ (1020)-介子生产横截面经测量为σ ϕ ×(ℬℛ( ϕ < / em>→ K + K -)= 570±8(stat)±66(syst)< span id =“ IEq23”>± 20(流明) id =“ IEq24”>μb

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