Measurement of the Polarization of W Bosons with Large TransverseMomenta in W plus jets Events at the LHC
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Physical Review Letters (Q4) | ||
| Dergi ISSN | 0031-9007 Wos Dergi Scopus Dergi | ||
| Dergi Tarandığı Indeksler | SCI | ||
| Makale Dili | İngilizce | Basım Tarihi | 01-2011 |
| Cilt / Sayı / Sayfa | 107 / 2 / – | DOI | 10.1103/PhysRevLett.107.021802 |
| UAK Araştırma Alanları |
Yüksek Enerji ve Parçacık Fiziği
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| Özet |
| A first measurement of the polarization of W bosons with large transverse momenta in pp collisions is presented. The measurement is based on 36 pb Ā1 of data recorded at ffiffiffi s p ž 7 TeV by the CMS detector at the LHC. The left-handed, right-handed, and longitudinal polarization fractions (fL, fR, and f0, respectively) of W bosons with transverse momenta larger than 50 GeV are determined by using decays to both electrons and muons. The muon final state yields the most precise measurement: ðfL Ā fRÞĀ ž 0: 240 Æ 0: 036ðstatÞ Æ 0: 031ðsystÞ and fĀ0 ž 0: 183 Æ 0: 087ðstatÞ Æ 0: 123ðsystÞ for negatively charged W bosons and ðfL Ā fRÞþ ž 0: 310 Æ 0: 036ðstatÞ Æ 0: 017ðsystÞ and fþ 0 ž 0: 171 Æ 0: 085ðstatÞ Æ 0: 099ðsystÞ for positively charged W bosons. This establishes, for the first time, that W bosons produced in pp collisions with large transverse momenta are predominantly left-handed, as expected in the standard model. |
| Anahtar Kelimeler |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Scopus | 90 |
| Google Scholar | 1 |