Measurement of neutral strange particle production in the underlying event 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 | Physical Review D Particles Fields Gravitation and Cosmology (Q1) | ||
| Dergi ISSN | 1550-7998 Dergi Bilgileri (2013) | ||
| Makale Dili | İngilizce | Basım Tarihi | 09-2013 |
| Cilt / Sayı / Sayfa | 88 / 5 / 52001–0 | DOI | 10.1103/PhysRevD.88.052001 |
| Makale Linki | https://scholar.google.com/scholar?cluster=7460039132391595782&hl=en&oi=scholarr | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| Measurements are presented of the production of primary K-S(0) and Lambda particles in proton-proton collisions at root s = 7 TeV in the region transverse to the leading charged-particle jet in each event. The average multiplicity and average scalar transverse momentum sum of K-S(0) and Lambda particles measured at pseudorapidities vertical bar eta vertical bar < 2 rise with increasing charged-particle jet p(T) in the range 1-10 GeV/c and saturate in the region 10-50 GeV/c. The rise and saturation of the strange-particle yields and transverse momentum sums in the underlying event are similar to those observed for inclusive charged particles, which confirms the impact-parameter picture of multiple parton interactions. The results are compared to recent tunes of the PYTHIA Monte Carlo event generator. The PYTHIA simulations underestimate the data by 15%-30% for K-S(0) mesons and by about 50% for Lambda baryons, a deficit similar to that observed for the inclusive strange-particle production in non-single-diffractive proton-proton collisions. The constant strange-to charged-particle activity ratios with respect to the leading jet p(T) and similar trends for mesons and baryons indicate that the multiparton-interaction dynamics is decoupled from parton hadronization, which occurs at a later stage. |
| Anahtar Kelimeler |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 10 |
| Scopus | 15 |
| Google Scholar | 48 |