Jet and underlying event properties as a function of charged-particle multiplicity in proton-proton collisions at √s=7 TeV
Yazarlar (1)
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | European Physical Journal C (Q1) | ||
| Dergi ISSN | 1434-6044 Dergi Bilgileri (2013) | ||
| Makale Dili | İngilizce | Basım Tarihi | 12-2013 |
| Cilt / Sayı / Sayfa | 73 / 12 / 1–26 | DOI | 10.1140/epjc/s10052-013-2674-5 |
| Makale Linki | https://scholar.google.com/scholar?cluster=16544895289102612264&hl=en&oi=scholarr | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| Characteristics of multi-particle production in proton-proton collisions at root s = 7 TeV are studied as a function of the charged-particle multiplicity, N (ch). The produced particles are separated into two classes: those belonging to jets and those belonging to the underlying event. Charged particles are measured with pseudorapidity |eta|< 2.4 and transverse momentum p (T)> 0.25 GeV/c. Jets are reconstructed from charged-particles only and required to have p (T)> 5 GeV/c. The distributions of jet p (T), average p (T) of charged particles belonging to the underlying event or to jets, jet rates, and jet shapes are presented as functions of N (ch) and compared to the predictions of the pythia and herwig event generators. Predictions without multi-parton interactions fail completely to describe the N (ch)-dependence observed in the data. For increasing N (ch), pythia systematically predicts higher jet rates and harder p (T) spectra than seen in the data, whereas herwig shows the opposite trends. At the highest multiplicity, the data-model agreement is worse for most observables, indicating the need for further tuning and/or new model ingredients. |
| Anahtar Kelimeler |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 34 |
| Scopus | 33 |
| Google Scholar | 114 |