Constraints on the χc1 versus χc2 Polarizations in Proton-Proton Collisions at √s=8 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Physical Review Letters (Q1) | ||
| Dergi ISSN | 0031-9007 Dergi Bilgileri (2020) | ||
| Makale Dili | İngilizce | Basım Tarihi | 04-2020 |
| Cilt / Sayı / Sayfa | 124 / 16 / – | DOI | 10.1103/PhysRevLett.124.162002 |
| Makale Linki | http://www.scopus.com/inward/record.url?eid=2-s2.0-85084721870&partnerID=MN8TOARS | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| The polarizations of promptly produced and mesons are studied using data collected by the CMS experiment at the LHC, in proton-proton collisions at 8 TeV. The states are reconstructed via their radiative decays , with the photons being measured through conversions to ee, which allows the two states to be well resolved. The polarizations are measured in the helicity frame, through the analysis of the to yield ratio as a function of the polar or azimuthal angle of the positive muon emitted in the decay, in three ranges of transverse momentum. While no differences are seen between the two states in terms of azimuthal decay angle distributions, they are observed to have significantly different polar anisotropies. The measurement favors a scenario where at least one of the two states is strongly polarized along the helicity quantization axis, in agreement with nonrelativistic quantum chromodynamics predictions. This is the first measurement of significantly polarized quarkonia produced at high transverse momentum. |
| Anahtar Kelimeler |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 11 |
| Scopus | 16 |
| Google Scholar | 37 |