185 research outputs found
Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era
The LHCb Upgrade II will fully exploit the flavour-physics opportunities of the HL-LHC, and study additional physics topics that take advantage of the forward acceptance of the LHCb spectrometer. The LHCb Upgrade I will begin operation in 2020. Consolidation will occur, and modest enhancements of the Upgrade I detector will be installed, in Long Shutdown 3 of the LHC (2025) and these are discussed here. The main Upgrade II detector will be installed in long shutdown 4 of the LHC (2030) and will build on the strengths of the current LHCb experiment and the Upgrade I. It will operate at a luminosity up to 2Ă1034
cmâ2sâ1, ten times that of the Upgrade I detector. New detector components will improve the intrinsic performance of the experiment in certain key areas. An Expression Of Interest proposing Upgrade II was submitted in February 2017. The physics case for the Upgrade II is presented here in more depth. CP-violating phases will be measured with precisions unattainable at any other envisaged facility. The experiment will probe b â sl+lâand b â dl+lâ transitions in both muon and electron decays in modes not accessible at Upgrade I. Minimal flavour violation will be tested with a precision measurement of the ratio of B(B0 â ÎŒ+ÎŒâ)/B(Bs â ÎŒ+ÎŒâ). Probing charm CP violation at the 10â5 level may result in its long sought discovery. Major advances in hadron spectroscopy will be possible, which will be powerful probes of low energy QCD. Upgrade II potentially will have the highest sensitivity of all the LHC experiments on the Higgs to charm-quark couplings. Generically, the new physics mass scale probed, for fixed couplings, will almost double compared with the pre-HL-LHC era; this extended reach for flavour physics is similar to that which would be achieved by the HE-LHC proposal for the energy frontier
LHCb upgrade software and computing : technical design report
This document reports the Research and Development activities that are carried out in the software and computing domains in view of the upgrade of the LHCb experiment. The implementation of a full software trigger implies major changes in the core software framework, in the event data model, and in the reconstruction algorithms. The increase of the data volumes for both real and simulated datasets requires a corresponding scaling of the distributed computing infrastructure. An implementation plan in both domains is presented, together with a risk assessment analysis
Geomechanical substantiation of reuse feasibility of development workings for coal mines
ĐĐžŃĐ”ŃŃĐ°ŃŃŃ ĐœĐ° Đ·ĐŽĐŸĐ±ŃŃŃŃ ĐœĐ°ŃĐșĐŸĐČĐŸĐłĐŸ ŃŃŃĐżĐ”ĐœŃ ĐșĐ°ĐœĐŽĐžĐŽĐ°ŃĐ° ŃĐ”Ń
ĐœŃŃĐœĐžŃ
ĐœĐ°ŃĐș Đ·Đ° ŃпДŃŃĐ°Đ»ŃĐœŃŃŃŃ 05.15.09 â «ĐĐ”ĐŸŃĐ”Ń
ĐœŃŃĐœĐ° Ń ĐłŃŃĐœĐžŃĐ° ĐŒĐ”Ń
Đ°ĐœŃĐșа». ĐĐ”ŃжаĐČĐœĐžĐč ĐČĐžŃĐžĐč ĐœĐ°ĐČŃĐ°Đ»ŃĐœĐžĐč Đ·Đ°ĐșлаЎ «ĐĐ°ŃŃĐŸĐœĐ°Đ»ŃĐœĐžĐč ĐłŃŃĐœĐžŃĐžĐč ŃĐœŃĐČĐ”ŃŃĐžŃДѻ, ĐĐœŃĐżŃĐŸĐżĐ”ŃŃĐŸĐČŃŃĐș, 2016.Đ ĐŽĐžŃĐ”ŃŃĐ°ŃŃŃ ĐŸĐ±ÒŃŃĐœŃŃĐČĐ°ĐœŃ ŃĐ°ĐșŃ ĐżĐ°ŃĐ°ĐŒĐ”ŃŃĐž ĐșĐŸĐŒĐ±ŃĐœĐŸĐČĐ°ĐœĐŸŃ ŃĐžŃŃĐ”ĐŒĐž ĐșŃŃĐżĐ»Đ”ĐœĐœŃ Ń ĐŸŃ
ĐŸŃĐŸĐœĐœĐŸŃ ĐșĐŸĐœŃŃŃŃĐșŃŃŃ ĐœĐ° ŃĐżĐŸĐ»ŃŃĐ”ĐœĐœŃ Â«ŃŃŃĐ”ĐșâлаĐČа», ĐżŃĐž ŃĐșĐžŃ
ĐŒĐŸĐ¶Đ»ĐžĐČĐ° Đ”ĐșĐŸĐœĐŸĐŒŃŃĐœĐŸ ĐŽĐŸŃŃĐ»ŃĐœĐ° ĐżĐŸĐČŃĐŸŃĐœĐ° Đ”ĐșŃплŃĐ°ŃĐ°ŃŃŃ ĐżŃĐŽĐłĐŸŃĐŸĐČŃĐžŃ
ĐČĐžŃĐŸĐ±ĐŸĐș ĐČ ĐłŃŃĐœĐžŃĐŸâĐłĐ”ĐŸĐ»ĐŸĐłŃŃĐœĐžŃ
ŃĐŒĐŸĐČĐ°Ń
ŃĐ°Ń
Ń ĐР«ХДлŃĐŽŃĐČĐČŃĐłŃллŃ».
Đ ŃДзŃĐ»ŃŃĐ°ŃŃ ĐœĐ°ŃŃŃĐœĐžŃ
ĐČĐžĐŒŃŃŃĐČĐ°ĐœŃ ĐČŃŃĐ°ĐœĐŸĐČĐ»Đ”ĐœĐŸ, ŃĐŸ ĐČДлОŃĐžĐœĐ° залОŃĐșĐŸĐČĐŸĐłĐŸ пДŃĐ”ŃŃĐ·Ń ĐŒĐŸĐ¶Đ” ĐČĐžŃŃŃпаŃĐž ĐșŃĐžŃĐ”ŃŃŃĐŒ, ŃĐŸ Ń
Đ°ŃĐ°ĐșŃĐ”ŃОзŃŃ ĐŽĐŸŃŃĐ»ŃĐœŃŃŃŃ ĐŽĐ»Ń ĐżĐŸĐČŃĐŸŃĐœĐŸĐłĐŸ ĐČĐžĐșĐŸŃĐžŃŃĐ°ĐœĐœŃ ĐșĐŸĐœĐČĐ”ŃŃĐœĐŸĐłĐŸ ŃŃŃĐ”ĐșŃ ĐœĐ° ŃŃĐŒŃĐ¶ĐœŃĐč лаĐČŃ. йаĐșĐŸŃ ĐČДлОŃĐžĐœĐŸŃ Ń Đ·Đ°Đ»ĐžŃĐșĐŸĐČĐ° ĐżĐ»ĐŸŃĐ° ĐČ ŃĐČŃŃĐ»Ń, ŃĐŸ ĐŽĐŸŃŃĐČĐœŃŃ 8,5 ĐŒ2.
ĐĐ° ĐŸŃĐœĐŸĐČŃ ĐŸĐ±ÒŃŃĐœŃĐŸĐČĐ°ĐœĐŸĐłĐŸ ĐșŃĐžŃĐ”ŃŃŃ ĐČĐžŃŃŃĐ”ĐœĐ° ŃĐžŃДлŃĐœĐ° Đ·Đ°ĐŽĐ°ŃĐ° ĐżŃĐŸ ĐČплОĐČ ŃŃĐ·ĐœĐžŃ
ŃĐžŃŃĐ”ĐŒ ĐŸŃ
ĐŸŃĐŸĐœĐž ĐœĐ° ĐĐĐĄ ĐłĐ”ĐŸĐŒĐ”Ń
Đ°ĐœŃŃĐœĐŸŃ ŃĐžŃŃĐ”ĐŒĐž «ĐșŃŃĐżĐ»Đ”ĐœĐœŃ â ĐŸŃ
ĐŸŃĐŸĐœĐœĐ° ĐșĐŸĐœŃŃŃŃĐșŃŃŃ â ĐŒĐ°ŃĐžĐČ». ĐŃŃĐ°ĐœĐŸĐČĐ»Đ”ĐœĐŸ, ŃĐŸ ĐżŃĐž ĐČĐžĐșĐŸŃĐžŃŃĐ°ĐœĐœŃ ĐŸŃ
ĐŸŃĐŸĐœĐœĐŸŃ ĐșĐŸĐœŃŃŃŃĐșŃŃŃ Ń ĐČОглŃĐŽŃ ĐœĐ°ĐșĐ°ŃĐœĐŸĐłĐŸ ĐșĐŸŃŃŃĐ° Đ·Ń ŃпалŃĐœĐŸĐłĐŸ бŃŃŃĐ° ĐČ ŃŃĐșŃĐżĐœĐŸŃŃŃ Đ· ĐŽĐČĐŸŃŃĐČĐœĐ”ĐČĐŸŃ ŃĐžŃŃĐ”ĐŒĐŸŃ ŃĐ°ĐŒĐœĐŸâĐ°ĐœĐșĐ”ŃĐœĐŸĐłĐŸ ĐșŃŃĐżĐ»Đ”ĐœĐœŃ Đ·Đ° лаĐČĐŸŃ Đ·Đ°Đ±Đ”Đ·ĐżĐ”ŃŃŃŃŃŃŃ Đ·Đ±Đ”ŃĐ”Đ¶Đ”ĐœĐœŃ ĐżĐ”ŃĐ”ŃŃĐ·Ń ĐżŃĐŽĐłĐŸŃĐŸĐČŃĐŸŃ ĐČĐžŃĐŸĐ±ĐșĐž, ŃĐŸ ĐżŃĐžĐ·ĐœĐ°ŃĐ”ĐœĐ° ĐŽĐ»Ń ĐżĐŸĐČŃĐŸŃĐœĐŸĐłĐŸ ĐČĐžĐșĐŸŃĐžŃŃĐ°ĐœĐœŃ.
ĐĐŸŃĐ»ŃĐŽĐ¶Đ”ĐœĐŸ ĐČплОĐČ ĐșŃŃŃ ĐœĐ°Ń
ĐžĐ»Ń ĐżĐ»Đ°ŃŃĐ° ĐœĐ° паŃĐ°ĐŒĐ”ŃŃĐž ĐżŃĐžĐčĐœŃŃĐŸŃ ĐłĐ”ĐŸĐŒĐ”Ń
Đ°ĐœŃŃĐœĐŸŃ ŃĐžŃŃĐ”ĐŒĐž.
Đ ĐŸĐ·ŃĐŸĐ±ĐșĐž бŃлО ŃŃĐżŃŃĐœĐŸ ŃДалŃĐ·ĐŸĐČĐ°ĐœŃ ĐČ ĐżŃĐŸĐŒĐžŃĐ»ĐŸĐČĐŸŃŃŃ Đ· Đ”ĐșĐŸĐœĐŸĐŒŃŃĐœĐžĐŒ Đ”ŃĐ”ĐșŃĐŸĐŒ 2 422 ĐłŃĐœ./ĐŒ ĐČĐžŃĐŸĐ±ĐșĐž.ĐŠĐ”Đ»Ń ŃĐ°Đ±ĐŸŃŃ ŃĐŸŃŃĐŸĐžŃ ĐČ ĐłĐ”ĐŸĐŒĐ”Ń
Đ°ĐœĐžŃĐ”ŃĐșĐŸĐŒ ĐŸĐ±ĐŸŃĐœĐŸĐČĐ°ĐœĐžĐž ŃĐ°ĐșĐžŃ
паŃĐ°ĐŒĐ”ŃŃĐŸĐČ ĐșĐŸĐŒĐ±ĐžĐœĐžŃĐŸĐČĐ°ĐœĐœĐŸĐč ŃĐžŃŃĐ”ĐŒŃ ĐșŃДпО Đž ĐŸŃ
ŃĐ°ĐœĐœĐŸĐč ĐșĐŸĐœŃŃŃŃĐșŃОО ĐœĐ° ŃĐŸĐżŃŃĐ¶Đ”ĐœĐžĐž «ŃŃŃĐ”Đș â лаĐČа», ĐżŃĐž ĐșĐŸŃĐŸŃŃŃ
ĐČĐŸĐ·ĐŒĐŸĐ¶ĐœĐ° ŃĐșĐŸĐœĐŸĐŒĐžŃĐ”ŃĐșĐž ŃДлДŃĐŸĐŸĐ±ŃĐ°Đ·ĐœĐ°Ń ĐżĐŸĐČŃĐŸŃĐœĐ°Ń ŃĐșŃплŃĐ°ŃĐ°ŃĐžŃ ĐżĐŸĐŽĐłĐŸŃĐŸĐČĐžŃДлŃĐœŃŃ
ĐČŃŃĐ°Đ±ĐŸŃĐŸĐș ĐČ ĐłĐŸŃĐœĐŸ - ĐłĐ”ĐŸĐ»ĐŸĐłĐžŃĐ”ŃĐșĐžŃ
ŃŃĐ»ĐŸĐČĐžŃŃ
ŃĐ°Ń
Ń ĐĐ Â«ĐĄĐ”Đ»ĐžĐŽĐŸĐČŃĐłĐŸĐ»Ń».
Đ ĐșĐ°ŃĐ”ŃŃĐČĐ” ĐŸŃĐœĐŸĐČĐœĐŸĐłĐŸ ĐŸĐ±ŃĐ”ĐșŃĐ° ĐžŃŃĐ»Đ”ĐŽĐŸĐČĐ°ĐœĐžĐč ĐČŃбŃĐ°ĐœĐ° ŃĐ°Ń
ŃĐ° «1/3 ĐĐŸĐČĐŸĐłŃĐŸĐŽĐŸĐČŃĐșĐ°Ń» ĐĐ Â«ĐĄĐ”Đ»ĐžĐŽĐŸĐČŃĐłĐŸĐ»Ń», гЎД бŃлО ĐČŃĐżĐŸĐ»ĐœĐ”ĐœŃ ĐșĐŸĐŒĐżĐ»Đ”ĐșŃĐœŃĐ” ĐžŃŃĐ»Đ”ĐŽĐŸĐČĐ°ĐœĐžŃ, Đ·Đ°ĐșĐ»ŃŃĐ°ĐČŃОДŃŃ ĐČ ĐČОзŃĐ°Đ»ŃĐœĐŸĐŒ ĐŸĐ±ŃĐ»Đ”ĐŽĐŸĐČĐ°ĐœĐžĐž ŃŃĐŽĐ° ĐłĐŸŃĐœŃŃ
ĐČŃŃĐ°Đ±ĐŸŃĐŸĐș, ĐŸŃĐłĐ°ĐœĐžĐ·Đ°ŃОО ĐžĐœŃŃŃŃĐŒĐ”ĐœŃĐ°Đ»ŃĐœŃŃ
ĐœĐ°Đ±Đ»ŃĐŽĐ”ĐœĐžĐč ĐœĐ° Đ·Đ°ĐŒĐ”ŃĐœŃŃ
ŃŃĐ°ĐœŃĐžŃŃ
, ŃĐ”ŃĐ”ĐœĐžĐž Đ°ĐœĐ°Đ»ĐžŃĐžŃĐ”ŃĐșĐžŃ
Đ·Đ°ĐŽĐ°Ń, Đ° ŃĐ°ĐșжД ĐżŃĐŸĐČĐ”ĐŽĐ”ĐœĐžĐž ŃĐșŃпДŃŃĐœĐŸĐč ĐŸŃĐ”ĐœĐșĐž ŃĐŸŃŃĐŸŃĐœĐžŃ ĐČŃĐ”ĐŒĐŸŃĐœŃŃ
ŃŃŃĐ”ĐșĐŸĐČ Đž Đ°ĐœĐ°Đ»ĐžĐ·Đ” Đ°ŃŃ
ĐžĐČĐœŃŃ
ĐŽĐ°ĐœĐœŃŃ
.
Đ ŃДзŃĐ»ŃŃĐ°ŃĐ” ĐČŃĐżĐŸĐ»ĐœĐ”ĐœĐžŃ ĐșĐŸĐŒĐżĐ»Đ”ĐșŃĐ° ĐœĐ°ŃŃŃĐœŃŃ
ĐžĐ·ĐŒĐ”ŃĐ”ĐœĐžĐč ĐŸĐżŃĐ”ĐŽĐ”Đ»Đ”ĐœŃ ĐŸŃĐœĐŸĐČĐœŃĐ” ĐČĐžĐŽŃ ĐżŃĐŸŃĐČĐ»Đ”ĐœĐžĐč ĐłĐŸŃĐœĐŸĐłĐŸ ĐŽĐ°ĐČĐ»Đ”ĐœĐžŃ Đž ŃĐ”ĐŒĐŸĐœŃĐœŃŃ
ŃĐ°Đ±ĐŸŃ ĐČ ĐżĐŸĐŽĐłĐŸŃĐŸĐČĐžŃДлŃĐœŃŃ
ĐČŃŃĐ°Đ±ĐŸŃĐșĐ°Ń
, ĐżĐŸŃŃŃĐŸĐ”ĐœŃ Đ·Đ°ĐČĐžŃĐžĐŒĐŸŃŃĐž ŃĐ°Đ·ĐČĐžŃĐžŃ ĐłĐ”ĐŸĐŒĐ”Ń
Đ°ĐœĐžŃĐ”ŃĐșĐžŃ
ĐżŃĐŸŃĐ”ŃŃĐŸĐČ ĐČ ĐžŃ
ĐŸĐșŃĐ”ŃŃĐœĐŸŃŃĐž ĐČĐŸ ĐČŃĐ”ĐŒĐ”ĐœĐž Đž ŃŃŃĐ°ĐœĐŸĐČĐ»Đ”ĐœĐŸ, ŃŃĐŸ ĐČДлОŃĐžĐœĐ° ĐŸŃŃĐ°ŃĐŸŃĐœĐŸĐłĐŸ ŃĐ”ŃĐ”ĐœĐžŃ ĐŒĐŸĐ¶Đ”Ń ĐČŃŃŃŃпаŃŃ ŃĐ”ĐŒ ĐșŃĐžŃĐ”ŃĐžĐ”ĐŒ, ĐșĐŸŃĐŸŃŃĐč Ń
Đ°ŃĐ°ĐșŃĐ”ŃОзŃĐ”Ń ŃДлДŃĐŸĐŸĐ±ŃĐ°Đ·ĐœĐŸŃŃŃ ĐŽĐ»Ń ĐżĐŸĐČŃĐŸŃĐœĐŸĐłĐŸ ĐžŃĐżĐŸĐ»ŃĐ·ĐŸĐČĐ°ĐœĐžŃ ĐșĐŸĐœĐČĐ”ĐčĐ”ŃĐœĐŸĐłĐŸ ŃŃŃĐ”ĐșĐ° ĐœĐ° ŃĐŒĐ”Đ¶ĐœĐŸĐč лаĐČĐ”. ĐŃĐžŃĐ”ŃОалŃĐœĐŸĐč ĐČДлОŃĐžĐœĐŸĐč ŃĐșĐŸĐœĐŸĐŒĐžŃĐ”ŃĐșĐŸĐč ŃĐ°ŃĐžĐŸĐœĐ°Đ»ŃĐœĐŸŃŃĐž ĐżĐŸĐČŃĐŸŃĐœĐŸĐłĐŸ ĐžŃĐżĐŸĐ»ŃĐ·ĐŸĐČĐ°ĐœĐžŃ ŃŃŃĐ”ĐșĐ° ŃĐČĐ»ŃĐ”ŃŃŃ ĐŸŃŃĐ°ŃĐŸŃĐœĐ°Ń ĐżĐ»ĐŸŃĐ°ĐŽŃ ĐČ ŃĐČĐ”ŃŃ, ŃĐ°ĐČĐœĐ°Ń 8,5 ĐŒ2.
ĐĐ° ĐŸŃĐœĐŸĐČĐ” ĐŸĐ±ĐŸŃĐœĐŸĐČĐ°ĐœĐœĐŸĐłĐŸ ĐșŃĐžŃĐ”ŃĐžŃ ŃĐ”ŃĐ”ĐœĐ° ŃĐžŃĐ»Đ”ĐœĐœĐ°Ń Đ·Đ°ĐŽĐ°ŃĐ° ĐŸ ĐČлОŃĐœĐžĐ” ŃазлОŃĐœŃŃ
ŃĐžŃŃĐ”ĐŒ ĐŸŃ
ŃĐ°ĐœŃ ĐœĐ° ĐĐĐĄ ĐłĐ”ĐŸĐŒĐ”Ń
Đ°ĐœĐžŃĐ”ŃĐșĐŸĐč ŃĐžŃŃĐ”ĐŒŃ Â«ĐșŃĐ”ĐżŃ â ĐŸŃ
ŃĐ°ĐœĐœĐ°Ń ĐșĐŸĐœŃŃŃŃĐșŃĐžŃ â ĐŒĐ°ŃŃĐžĐČ». ĐŁŃŃĐ°ĐœĐŸĐČĐ»Đ”ĐœĐŸ, ŃŃĐŸ ĐżŃĐž ĐžŃĐżĐŸĐ»ŃĐ·ĐŸĐČĐ°ĐœĐžĐž ĐŸŃ
ŃĐ°ĐœĐœŃŃ
ĐșĐŸĐœŃŃŃŃĐșŃОО ĐČ ĐČОЎД ĐœĐ°ĐșĐ°ŃĐœĐŸĐłĐŸ ĐșĐŸŃŃŃĐ° Оз ŃпалŃĐœĐŸĐłĐŸ бŃŃŃĐ°, ĐČŃбŃĐ°ĐœĐŸĐč ĐżĐŸ ĐșĐŸĐŒĐżĐ»Đ”ĐșŃŃ ĐșŃĐžŃĐ”ŃОДĐČ Â«ĐłĐ”ĐŸĐŒĐ”Ń
Đ°ĐœĐžŃĐ”ŃĐșĐ°Ń ŃŃŃĐ”ĐșŃĐžĐČĐœĐŸŃŃŃ», «ŃŃĐŸĐžĐŒĐŸŃŃŃ», «ŃĐ”Ń
ĐœĐŸĐ»ĐŸĐłĐžŃĐœĐŸŃŃŃ», ĐČ ŃĐŸĐČĐŸĐșŃĐżĐœĐŸŃŃĐž Ń ĐŽĐČŃŃ
ŃŃĐŸĐČĐœĐ”ĐČĐŸĐč ŃĐžŃŃĐ”ĐŒĐŸĐč ŃĐ°ĐŒĐœĐŸ - Đ°ĐœĐșĐ”ŃĐœĐŸĐč ĐșŃДпО ĐœĐ° ĐŸŃĐœĐŸĐČĐ” ŃŃĐ°Đ»Đ”ĐżĐŸĐ»ĐžĐŒĐ”ŃĐœŃŃ
Đž ĐșĐ°ĐœĐ°ŃĐœŃŃ
Đ°ĐœĐșĐ”ŃĐŸĐČ, Đ·Đ° лаĐČĐŸĐč ĐŸĐ±Đ”ŃпДŃĐžĐČĐ°Đ”ŃŃŃ ŃĐŸŃ
ŃĐ°ĐœĐ”ĐœĐžĐ” ŃĐ”ŃĐ”ĐœĐžŃ ĐżĐŸĐŽĐłĐŸŃĐŸĐČĐžŃДлŃĐœĐŸĐč ĐČŃŃĐ°Đ±ĐŸŃĐșĐž, ĐżŃĐžĐŒĐ”ĐœŃĐ”ĐŒĐŸĐč ĐŽĐ»Ń ĐżĐŸĐČŃĐŸŃĐœĐŸĐłĐŸ ĐžŃĐżĐŸĐ»ŃĐ·ĐŸĐČĐ°ĐœĐžŃ. йаĐșĐ°Ń ŃĐžŃŃĐ”ĐŒĐ° «ĐșŃĐ”ĐżŃ â ĐŸŃ
ŃĐ°ĐœĐœĐ°Ń ĐșĐŸĐœŃŃŃŃĐșŃОѻ ĐżŃĐžĐœŃŃĐ° ĐșĐ°Đș Đ±Đ°Đ·ĐŸĐČĐ°Ń.
Đ ĐłĐŸŃĐœĐŸâĐłĐ”ĐŸĐ»ĐŸĐłĐžŃĐ”ŃĐșĐžŃ
ŃŃĐ»ĐŸĐČĐžŃŃ
ŃĐ°Ń
Ń ĐŃĐ°ŃĐœĐŸĐ°ŃĐŒĐ”ĐčŃĐșĐŸĐłĐŸ ĐżŃĐŸĐŒŃŃĐ»Đ”ĐœĐœĐŸĐłĐŸ ŃĐ°ĐčĐŸĐœĐ° ĐČДлОŃĐžĐœĐ° ĐŸŃŃĐ°ŃĐŸŃĐœĐŸĐłĐŸ ŃĐ”ŃĐ”ĐœĐžŃ ĐșĐŸĐœĐČĐ”ĐčĐ”ŃĐœĐŸĐłĐŸ ŃŃŃĐ”ĐșĐ°, ĐżŃĐžĐœŃŃĐ°Ń ĐČ ĐșĐ°ŃĐ”ŃŃĐČĐ” ĐșŃĐžŃĐ”ŃĐžŃ ĐżĐŸĐČŃĐŸŃĐœĐŸĐłĐŸ ĐžŃĐżĐŸĐ»ŃĐ·ĐŸĐČĐ°ĐœĐžŃ ĐżĐŸĐŽĐłĐŸŃĐŸĐČĐžŃДлŃĐœŃŃ
ĐČŃŃĐ°Đ±ĐŸŃĐŸĐș, ŃĐŒĐ”ĐœŃŃĐ°Đ”ŃŃŃ ĐżŃĐž ŃĐČДлОŃĐ”ĐœĐžĐž Ńгла ĐżĐ°ĐŽĐ”ĐœĐžŃ ŃĐłĐŸĐ»ŃĐœŃŃ
плаŃŃĐŸĐČ ĐżĐŸ Đ»ĐžĐœĐ”ĐčĐœĐŸĐŒŃ Đ·Đ°ĐșĐŸĐœŃ, ŃŃĐŸ ĐżĐŸĐ·ĐČĐŸĐ»ŃĐ”Ń ĐœĐ° ŃŃĐŸĐč ĐŸŃĐœĐŸĐČĐ” ĐșĐŸŃŃĐ”ĐșŃĐžŃĐŸĐČĐ°ŃŃ Đ±Đ°Đ·ĐŸĐČŃĐč ĐČĐ°ŃĐžĐ°ĐœŃ ŃĐžŃŃĐ”ĐŒŃ ĐșŃДпО Đž ĐŸŃ
ŃĐ°ĐœĐœĐŸĐč ĐșĐŸĐœŃŃŃŃĐșŃОО.
РДзŃĐ»ŃŃĐ°ŃŃ ĐČĐœĐ”ĐŽŃĐ”ĐœŃ ĐČ ĐČОЎД Đ Đ”ĐșĐŸĐŒĐ”ĐœĐŽĐ°ŃОО ĐżĐŸ ĐłĐ”ĐŸĐŒĐ”Ń
Đ°ĐœĐžŃĐ”ŃĐșĐŸĐŒŃ ĐŸĐ±ĐŸŃĐœĐŸĐČĐ°ĐœĐžŃ ĐżĐ°ŃĐ°ĐŒĐ”ŃŃĐŸĐČ ŃĐ°ĐŒĐœĐŸ - Đ°ĐœĐșĐ”ŃĐœĐŸĐč ĐșŃДпО ĐżĐŸĐŽĐłĐŸŃĐŸĐČĐžŃДлŃĐœŃŃ
ĐČŃŃĐ°Đ±ĐŸŃĐŸĐș ŃĐłĐŸĐ»ŃĐœŃŃ
ŃĐ°Ń
Ń ĐżŃĐž ĐŸŃŃĐ°Đ±ĐŸŃĐșĐ” ĐČŃĐ”ĐŒĐŸŃĐœĐŸĐłĐŸ ŃŃĐ°ŃŃĐșĐ° 18 ŃĐ¶ĐœĐŸĐč лаĐČŃ ĐżĐ». l1 ŃĐ°Ń
ŃŃ Â«1/3 ĐĐŸĐČĐŸĐłŃĐŸĐŽĐŸĐČŃĐșĐ°Ń» Đž «ĐĐ”ŃĐŸĐŽĐžĐșĐž ŃĐžŃĐ»Đ”ĐœĐœĐŸĐłĐŸ ĐŒĐŸĐŽĐ”Đ»ĐžŃĐŸĐČĐ°ĐœĐžŃ ŃĐ°ĐŒĐœĐŸ âĐ°ĐœĐșĐ”ŃĐœĐŸĐč ĐșŃДпО ĐżĐŸĐŽĐłĐŸŃĐŸĐČĐžŃДлŃĐœŃŃ
Đž ĐșапОŃĐ°Đ»ŃĐœŃŃ
ĐČŃŃĐ°Đ±ĐŸŃĐŸĐș ŃĐłĐŸĐ»ŃĐœŃŃ
ŃĐ°Ń
Ń ĐĐ Â«ĐĄĐ”Đ»ĐžĐŽĐŸĐČŃĐłĐŸĐ»Ń», Đ° ŃĐ°ĐșжД ĐžŃĐżĐŸĐ»ŃĐ·ĐŸĐČĐ°ĐœŃ ĐČ ŃŃĐ”Đ±ĐœĐŸĐŒ ĐżŃĐŸŃĐ”ŃŃĐ” ĐĐУР«ĐĐУ» ĐżŃĐž ĐżĐŸĐŽĐłĐŸŃĐŸĐČĐșĐ” ŃŃŃĐŽĐ”ĐœŃĐŸĐČ ŃŃŃĐżĐ”ĐœĐ”Đč «баĐșалаĐČŃ» Đž Â«ĐŒĐ°ĐłĐžŃŃŃ» Đž ĐŸĐ±ŃĐ°Đ·ĐŸĐČĐ°ŃДлŃĐœĐŸâĐșĐČалОŃĐžĐșĐ°ŃĐžĐŸĐœĐœĐŸĐłĐŸ ŃŃĐŸĐČĐœŃ Â«ŃпДŃОалОŃŃ».
ĐŃĐżĐŸĐ»ĐœĐ”ĐœĐœĐ°Ń ĐŸŃĐ”ĐœĐșĐ° ŃĐșĐŸĐœĐŸĐŒĐžŃĐ”ŃĐșĐŸĐč ŃŃŃĐ”ĐșŃĐžĐČĐœĐŸŃŃĐž ĐżŃĐ”ĐŽĐ»ĐŸĐ¶Đ”ĐœĐœŃŃ
ŃĐ”Ń
-ĐœĐžŃĐ”ŃĐșĐžŃ
ŃĐ”ŃĐ”ĐœĐžĐč, ĐŸĐ±Đ”ŃпДŃĐžĐČĐ°ŃŃĐžŃ
ĐżĐŸĐČŃĐŸŃĐœĐŸĐ” ĐžŃĐżĐŸĐ»ŃĐ·ĐŸĐČĐ°ĐœĐžĐ” ŃŃŃĐ”ĐșĐ° ĐżĐŸĐșазала, ŃŃĐŸ ĐŸĐ¶ĐžĐŽĐ°Đ”ĐŒŃĐč ŃĐșĐŸĐœĐŸĐŒĐžŃĐ”ŃĐșĐžĐč ŃŃŃĐ”ĐșŃ, ŃĐŸŃŃĐ°ĐČĐ»ŃĐ”Ń 2422 ĐłŃĐœ./ĐŒ ĐČŃŃĐ°Đ±ĐŸŃĐșĐž.The research purpose is geomechanical substantiation of such parameters of combined system of lining and support on the roadhead of roadway and longwall through which is possible and economically feasible to ensure the reuse of development workings under the mining and geological conditions of "Selidovugol" mines.
As a result of the inâsitu measurements revealed that the value of the remaining area can be a criteria that characterizes the feasibility for belt road reusing to adjacent longwall. Such value is the remaining area in the light that equal to 8.5 m2.
On the basis of justified criteria the influence of various support systems on stressâdeformed state of the geomechanical system "lining â support â array" was solved.
It is established that a residual inside halfâtimbers of roadway can act the criteria that characterize suitable for reuse in development workings adjacent to the longwall. Economic rationality criteria for reuse roadway is a residual inside halfâtimbers, equal to 8.5 m2.
It was found that by using a support system in the form of sawed stick crib, with the two â tier system of frame â bolt lining the criteria for development workings reuse was performed over the longwall.
The influence of the angle of the bed at the geomechanical system parameters was adopted.
The developments were successfully implemented and approbated. Economic effect is 2422 UAH on 1m
Measurement of the ratio of branching fractions /
International audienceA measurement is reported of the ratio of branching fractions R(J/Ï)=B(Bc+âJ/ÏÏ+ÎœÏ)/B(Bc+âJ/ÏÎŒ+ΜΌ), where the Ï+ lepton is identified in the decay mode Ï+âÎŒ+ÎœÎŒÎœÂŻÏ. This analysis uses a sample of proton-proton collision data corresponding to 3.0ââfb-1 of integrated luminosity recorded with the LHCb experiment at center-of-mass energies of 7 and 8 TeV. A signal is found for the decay Bc+âJ/ÏÏ+ÎœÏ at a significance of 3 standard deviations corrected for systematic uncertainty, and the ratio of the branching fractions is measured to be R(J/Ï)=0.71±0.17(stat)±0.18(syst). This result lies within 2 standard deviations above the range of central values currently predicted by the standard model
Measurements of the branching fractions of , , and
International audienceThe ratios of the branching fractions of the decays Î âââpÏÏ, Î âââpKK, and Î âââpÏK with respect to the Cabibbo-favoured Î âââpKÏ decay are measured using proton-proton collision data collected with the LHCb experiment at a 7 TeV centre-of-mass energy and corresponding to an integrated luminosity of 1.0 fb: \begin{array}{l}\frac{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{\pi}^{-}{\pi}^{+}\right)}{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{\pi}^{+}\right)}=\left(7.44\pm 0.08\pm 0.18\right)\%,\hfill \\ {}\frac{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{K}^{+}\right)}{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{\pi}^{+}\right)}=\left(1.70\pm 0.03\pm 0.03\right)\%\hfill \\ {}\frac{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{\pi}^{-}{K}^{+}\right)}{\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{\pi}^{+}\right)}=\left(0.165\pm 0.015\pm 0.005\right)\%,\hfill \end{array} where the uncertainties are statistical and systematic, respectively. These results are the most precise measurements of these quantities to date. When multiplied by the world-average value for , the corresponding branching fractions are \begin{array}{l}\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{\pi}^{-}{\pi}^{+}\right)=\left(4.72\pm 0.05\pm 0.11\pm 0.25\right)\times {10}^{-3},\hfill \\ {}\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{K}^{-}{K}^{+}\right)=\left(1.08\pm 0.02\pm 0.02\pm 0.06\right)\times {10}^{-3},\hfill \\ {}\mathrm{\mathcal{B}}\left({\varLambda}_c^{+}\to p{\pi}^{-}{K}^{+}\right)=\left(1.04\pm 0.09\pm 0.03\pm 0.05\right)\times {10}^{-4},\hfill \end{array} where the final uncertainty is due to
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