Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 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 | Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q1) | ||
| Dergi ISSN | 0370-2693 Dergi Bilgileri (2020) | ||
| Makale Dili | İngilizce | Basım Tarihi | 04-2020 |
| Cilt / Sayı / Sayfa | 803 / 1 / – | DOI | 10.1016/j.physletb.2020.135285 |
| Makale Linki | https://www.sciencedirect.com/science/article/am/pii/S0370269320300897?via%3Dihub | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| At the CERN LHC, top quark pairs are produced with copious amounts of additional jets, including those resulting from the hadronization of b quarks (b jets). Top quark pair production in association with a pair of b jets, ttbb, is challenging to model because of the very different energy scales for the b jets produced in association with the tt system and that of tt system [1], and because of the small but nonnegligible mass of the b quark. Improving the accuracy and the precision of perturbative calculations in quantum chromodynamics (QCD) for this process is crucial, since it represents an important background for numerous searches or other measurements at the LHC. In particular, tt production in association with a Higgs boson (ttH), where the Higgs boson decays to bb, suffers from an irreducible ttbb background [2–7]. Searches for four top quark production (tttt) are also affected by this background [8–10]. The two latter processes provide direct access to the top quark Yukawa coupling, a crucial parameter of the standard model [11, 12]. An improved understanding of the ttbb process would help reduce the uncertainty in such measurements. Calculations of the production cross section of tt in association with jets have been performed at next-to-leading order (NLO) in QCD and matched with parton showers for up to two additional |
| Anahtar Kelimeler |
| CMS | Measurement | Physics | Top |
Science Direct
Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV
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| Atıf Sayıları |