Study of exclusive two-photon production of W+W- in pp collisions at √s=7 TeV and constraints on anomalous quartic gauge couplings
Yazarlar (1)
| Makale Türü |
Özgün Makale
(ESCI dergilerinde yayınlanan tam makale)
|
||
| Dergi Adı | Journal of High Energy Physics | ||
| Dergi ISSN | 1126-6708 | ||
| Makale Dili | İngilizce | Basım Tarihi | 07-2013 |
| Cilt / Sayı / Sayfa | 2013 / 7 / 1–44 | DOI | 10.1007/JHEP07(2013)116 |
| Makale Linki | https://link.springer.com/content/pdf/10.1007/JHEP07(2013)116.pdf | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
|
||
| Özet |
| A search for exclusive or quasi-exclusive W+ W− production by photon-photon interactions, pp→ p (*) W+ W− p (*), at TeV is reported using data collected by the CMS detector with an integrated luminosity of 5.05 fb− 1. Events are selected by requiring a μ±e∓ vertex with no additional associated charged tracks and dilepton transverse momentum p T (μ±e∓)> 30 GeV. Two events passing all selection requirements are observed in the data, compared to a standard model expectation of 2.2±0.4 signal events with 0.84±0.15 background. The tail of the dilepton p T distribution is studied for deviations from the standard model. No events are observed with p T> 100 GeV. Model-independent upper limits are computed and compared to predictions involving anomalous quartic gauge couplings. The limits on the parameters with a dipole form factor and an energy cutoff Λ cutoff= 500 GeV are of the order of 10− 4. |
| Anahtar Kelimeler |
| Hadron-Hadron Scattering |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 60 |
| Scopus | 92 |
| Google Scholar | 332 |