A measurement is presented of a ratio observable that provides a measure of the azimuthal correlations among jets with large transverse momentum
We introduce a family of Finsler metrics, called the
 NSFPAR ID:
 10490304
 Publisher / Repository:
 Springer Science + Business Media
 Date Published:
 Journal Name:
 Calculus of Variations and Partial Differential Equations
 Volume:
 63
 Issue:
 2
 ISSN:
 09442669
 Format(s):
 Medium: X
 Sponsoring Org:
 National Science Foundation
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Abstract . This observable is measured in multijet events over the range of$$p_{\textrm{T}}$$ ${p}_{\text{T}}$ –$$p_{\textrm{T}} = 360$$ ${p}_{\text{T}}=360$ based on data collected by the CMS experiment in protonproton collisions at a centreofmass energy of 13$$3170\,\text {Ge}\hspace{.08em}\text {V} $$ $3170\phantom{\rule{0ex}{0ex}}\text{Ge}\phantom{\rule{0ex}{0ex}}\text{V}$ , corresponding to an integrated luminosity of 134$$\,\text {Te}\hspace{.08em}\text {V}$$ $\phantom{\rule{0ex}{0ex}}\text{Te}\phantom{\rule{0ex}{0ex}}\text{V}$ . The results are compared with predictions from Monte Carlo partonshower event generator simulations, as well as with fixedorder perturbative quantum chromodynamics (pQCD) predictions at nexttoleadingorder (NLO) accuracy obtained with different parton distribution functions (PDFs) and corrected for nonperturbative and electroweak effects. Data and theory agree within uncertainties. From the comparison of the measured observable with the pQCD prediction obtained with the NNPDF3.1 NLO PDFs, the strong coupling at the Z boson mass scale is$$\,\text {fb}^{1}$$ $\phantom{\rule{0ex}{0ex}}{\text{fb}}^{1}$ , where the total uncertainty is dominated by the scale dependence of the fixedorder predictions. A test of the running of$$\alpha _\textrm{S} (m_{{\textrm{Z}}}) =0.1177 \pm 0.0013\, \text {(exp)} _{0.0073}^{+0.0116} \,\text {(theo)} = 0.1177_{0.0074}^{+0.0117}$$ ${\alpha}_{\text{S}}\left({m}_{\text{Z}}\right)=0.1177\pm 0.0013\phantom{\rule{0ex}{0ex}}{\text{(exp)}}_{0.0073}^{+0.0116}\phantom{\rule{0ex}{0ex}}\text{(theo)}=0.{1177}_{0.0074}^{+0.0117}$ in the$$\alpha _\textrm{S}$$ ${\alpha}_{\text{S}}$ region shows no deviation from the expected NLO pQCD behaviour.$$\,\text {Te}\hspace{.08em}\text {V}$$ $\phantom{\rule{0ex}{0ex}}\text{Te}\phantom{\rule{0ex}{0ex}}\text{V}$ 
Abstract A search for exotic decays of the Higgs boson (
) with a mass of 125$$\text {H}$$ $\text{H}$ to a pair of light pseudoscalars$$\,\text {Ge}\hspace{.08em}\text {V}$$ $\phantom{\rule{0ex}{0ex}}\text{Ge}\phantom{\rule{0ex}{0ex}}\text{V}$ is performed in final states where one pseudoscalar decays to two$$\text {a}_{1} $$ ${\text{a}}_{1}$ quarks and the other to a pair of muons or$${\textrm{b}}$$ $\text{b}$ leptons. A data sample of proton–proton collisions at$$\tau $$ $\tau $ corresponding to an integrated luminosity of 138$$\sqrt{s}=13\,\text {Te}\hspace{.08em}\text {V} $$ $\sqrt{s}=13\phantom{\rule{0ex}{0ex}}\text{Te}\phantom{\rule{0ex}{0ex}}\text{V}$ recorded with the CMS detector is analyzed. No statistically significant excess is observed over the standard model backgrounds. Upper limits are set at 95% confidence level ($$\,\text {fb}^{1}$$ $\phantom{\rule{0ex}{0ex}}{\text{fb}}^{1}$ ) on the Higgs boson branching fraction to$$\text {CL}$$ $\text{CL}$ and to$$\upmu \upmu \text{ b } \text{ b } $$ $\mu \mu \phantom{\rule{0ex}{0ex}}\text{b}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\text{b}\phantom{\rule{0ex}{0ex}}$ via a pair of$$\uptau \uptau \text{ b } \text{ b },$$ $\tau \tau \phantom{\rule{0ex}{0ex}}\text{b}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\text{b}\phantom{\rule{0ex}{0ex}},$ s. The limits depend on the pseudoscalar mass$$\text {a}_{1} $$ ${\text{a}}_{1}$ and are observed to be in the range (0.17–3.3)$$m_{\text {a}_{1}}$$ ${m}_{{\text{a}}_{1}}$ and (1.7–7.7)$$\times 10^{4}$$ $\times {10}^{4}$ in the$$\times 10^{2}$$ $\times {10}^{2}$ and$$\upmu \upmu \text{ b } \text{ b } $$ $\mu \mu \phantom{\rule{0ex}{0ex}}\text{b}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\text{b}\phantom{\rule{0ex}{0ex}}$ final states, respectively. In the framework of models with two Higgs doublets and a complex scalar singlet (2HDM+S), the results of the two final states are combined to determine upper limits on the branching fraction$$\uptau \uptau \text{ b } \text{ b } $$ $\tau \tau \phantom{\rule{0ex}{0ex}}\text{b}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\text{b}\phantom{\rule{0ex}{0ex}}$ at 95%$${\mathcal {B}}(\text {H} \rightarrow \text {a}_{1} \text {a}_{1} \rightarrow \ell \ell \text{ b } \text{ b})$$ $B(\text{H}\to {\text{a}}_{1}{\text{a}}_{1}\to \ell \ell \phantom{\rule{0ex}{0ex}}\text{b}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\text{b})$ , with$$\text {CL}$$ $\text{CL}$ being a muon or a$$\ell $$ $\ell $ lepton. For different types of 2HDM+S, upper bounds on the branching fraction$$\uptau $$ $\tau $ are extracted from the combination of the two channels. In most of the Type II 2HDM+S parameter space,$${\mathcal {B}}(\text {H} \rightarrow \text {a}_{1} \text {a}_{1} )$$ $B(\text{H}\to {\text{a}}_{1}{\text{a}}_{1})$ values above 0.23 are excluded at 95%$${\mathcal {B}}(\text {H} \rightarrow \text {a}_{1} \text {a}_{1} )$$ $B(\text{H}\to {\text{a}}_{1}{\text{a}}_{1})$ for$$\text {CL}$$ $\text{CL}$ values between 15 and 60$$m_{\text {a}_{1}}$$ ${m}_{{\text{a}}_{1}}$ .$$\,\text {Ge}\hspace{.08em}\text {V}$$ $\phantom{\rule{0ex}{0ex}}\text{Ge}\phantom{\rule{0ex}{0ex}}\text{V}$ 
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