Measurement of the average very forward energy as a function of the track multiplicity at central pseudorapidities in proton-proton collisions at root s=13 TeV

• Main Authors: Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Bergauer, Thomas, Md. Ali, Mohd. Adli
• Format: Article
• Language: English; English; English
• Published: Springer Nature 2019
• Subjects: Q Science (General); QC Physics
• Online Access: http://irep.iium.edu.my/79905/19/79905_Measurement%20of%20the%20average%20very%20forward%20_scopus.pdf; http://irep.iium.edu.my/79905/2/79905_Measurement%20of%20the%20average%20very%20forward%20energy_scopus.pdf; http://irep.iium.edu.my/79905/3/79905_Measurement%20of%20the%20average%20very%20forward%20energy_wos.pdf; http://irep.iium.edu.my/79905/; https://link.springer.com/content/pdf/10.1140/epjc/s10052-019-7402-3.pdf

e average total energy as well as its hadronic and electromagnetic components are measured with the CMS detector at pseudorapidities −6.6 <η< −5.2 in protonproton collisions at a centre-of-mass energy √s = 13 TeV. The results are presented as a function of the charged particle multiplicity in the region |η| < 2. This measurement is sensitive to correlations induced by the underlying event structure over a very wide pseudorapidity region. The predictions of Monte Carlo event generators commonly used in collider experiments and ultra-high energy cosmic ray physics are compared to the data. All generators considered overestimate the fraction of energy going into hadrons.