We describe an analysis comparing the pp elastic cross section as measured by the D0 Collaboration at a center-of-mass energy of 1.96 TeV to that in p p collisions as measured by the TOTEM ...Collaboration at 2.76, 7, 8, and 13 TeV using a model-independent approach. The TOTEM cross sections, extrapolated to a center-of-mass energy of √ s = 1.96 TeV , are compared with the D0 measurement in the region of the diffractive minimum and the second maximum of the p p cross section. The two data sets disagree at the 3.4 σ level and thus provide evidence for the t -channel exchange of a colorless, C -odd gluonic compound, also known as the odderon. We combine these results with a TOTEM analysis of the same C -odd exchange based on the total cross section and the ratio of the real to imaginary parts of the forward elastic strong interaction scattering amplitude in p p scattering for which the significance is between 3.4 σ and 4.6 σ . The combined significance is larger than 5 σ and is interpreted as the first observation of the exchange of a colorless, C -odd gluonic compound.
We present a measurement of the effective weak mixing angle parameter sin2θℓeff in pp → Z/γ* → μ+μ− events at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at the Fermilab ...Tevatron Collider and corresponding to 8.6 fb−1 of integrated luminosity. The measured value of sin2θℓeffμμ = 0.23016 ± 0.00064 is further combined with the result from the D0 measurement in pp → Z/γ* → e+e− events, resulting in sin2θℓeffcomb = 0.23095 ± 0.00040. This combined result is the most precise measurement from a single experiment at a hadron collider and is the most precise determination using the coupling of the Z/γ* to light quarks.
Wire Tension Test Bench for Wire Chambers Abazov, V. M.; Alexeev, G. D.; Golovanov, G. A. ...
Physics of particles and nuclei letters,
10/2022, Letnik:
19, Številka:
5
Journal Article
Recenzirano
A test bench for determining the wire tension of wire chambers was designed. The tension of the wires is checked by measuring the resonant frequencies of their vibrations. In this work the ...development of the key modules of the test bench and the corresponding software are presented. The results of the test stand performance during the production of detectors for the SPD Muon System Prototype (NICA/JINR) are presented.
On the basis of documentary materials, the features of the functioning of rural (aul) public cash desks (sums) in the Nalchik district of the Terek region in the last third of the 19th — early 20th ...centuries are considered. The volume of powers and the legal status of rural treasurers responsible for conducting activities on public funds are characterized. The channels of replenishment and expenditure of their funds are identified and the procedure for accounting for funds is analyzed. For this, annual statistical reports on the state of the Nalchik District, statements of receipt and expenditure of funds from public funds, regulations and instructions for the activities of rural treasurers and other officials of rural, district and district governments were studied. The verage age of rural treasurers and candidates for their position is determined. The territorial organization of the functioning of public cash desks in the Nalchik district is characterized. It was established that one public cash desk was created and operated in one settlement. Exceptions to this rule are considered. It is concluded that rural public cash desks were the most important institution of the financial and economic system of the Nalchik District in the last third of the 19th — early 20th centuries, accumulating cash flow at the local level.
Here, we present a measurement of the effective weak mixing angle parameter sin2θℓeff in $p\bar{p}$ → Z/γ* → μ+μ– events at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at the ...Fermilab Tevatron Collider and corresponding to 8.6 fb–1 of integrated luminosity. The measured value of sin2θℓeffμμ = 0.23016 ± 0.00064 is further combined with the result from the D0 measurement in $p\bar{p}$ → Z/γ* → e+e– events, resulting in sin2θℓeffcomb = 0.23095 ± 0.00040. This combined result is the most precise measurement from a single experiment at a hadron collider and is the most precise determination using the coupling of the Z/γ* to light quarks.
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