Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at √s=2.76 TeV

The CMS Collaboration

نتاج البحث: المساهمة في مجلةمقالمراجعة النظراء

14 اقتباسات (Scopus)

ملخص

A measurement of the underlying event (UE) activity in proton-proton collisions is performed using events with charged-particle jets produced in the central pseudorapidity region (|ηjet| < 2) and with transverse momentum 1 ≤ pT jet < 100 GeV. The analysis uses a data sample collected at a centre-of-mass energy of 2.76 TeV with the CMS experiment at the LHC. The UE activity is measured as a function of pT jet in terms of the average multiplicity and scalar sum of transverse momenta (pT) of charged particles, with |η| < 2 and pT > 0.5 GeV, in the azimuthal region transverse to the highest pT jet direction. By further dividing the transverse region into two regions of smaller and larger activity, various components of the UE activity are separated. The measurements are compared to previous results at 0.9 and 7 TeV, and to predictions of several Monte Carlo event generators, providing constraints on the modelling of the UE dynamics.[Figure not available: see fulltext.]

اللغة الأصليةEnglish
رقم المقال137
دوريةJournal of High Energy Physics
مستوى الصوت2015
رقم الإصدار9
المعرِّفات الرقمية للأشياء
حالة النشرPublished - سبتمبر 29 2015

ASJC Scopus subject areas

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بصمة

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