We study the sensitivity of anomalous neutral triple gauge couplings (
aNTGC
) via
p
p
→
Z
Z
production in the 4
ℓ
channel at 100 TeV center of mass energy of future circular hadron collider, FCC-hh. ...The analysis including the realistic detector effects is performed in the mode where both Z bosons decay into same-flavor, oppositely charged lepton pairs. The sensitivities to the charge–parity (CP)-conserving couplings
C
B
~
W
/
Λ
4
and CP-violating couplings
C
WW
/
Λ
4
,
C
BW
/
Λ
4
and
C
BB
/
Λ
4
obtained at 95% Confidence Level using the invariant mass distribution of the 4
ℓ
system reconstructing the leading and sub-leading Z boson candidates are
-
0.09
,
+
0.09
,
-
0.21
,
+
0.21
,
-
0.26
,
+
0.26
, and
-
0.10
,
+
0.10
in units of
TeV
-
4
, respectively.
•At 100% RCA content, the concrete strength decreases about 24%.•Tensile splitting strength/compressive strength of RCA concretes are 7.7–11.4%.•Inverse relation between density–water absorption at ...higher RCA content observed.
Nowadays, researches on the usability of recycled aggregate (RA) in concrete is gaining popularity in all over the World due to the preservation of the environment and sustainable development. RA can be obtained after crushing and screening of the construction rubble obtained from demolished structures. The recycled coarse aggregate (RCA) used in this work is obtained from İSTAÇ (The İstanbul Environmental Protection and Waste Processing Corporation) to replace the natural coarse aggregates (NCA) in different proportions. Mineral additives used in this experimental work are silica fume (SF) and ground granulated blast furnace slag (GGBFS) at various ratios. The influence of SF and GGBFS with RCA of hardened concrete, such as compressive strength, tensile splitting strength, density and water absorption of are experimentally investigated. The test results obtained showed that at 100% of the replacement level of RCA, the compressive strength decreases about 24% and the strength reduction is more significant at over 50% RCA content. Increasing the RCA content significantly improves the tensile splitting strength of the concrete according to the compressive strength. The ratios between the tensile splitting strength to the compressive strength are greater in the RCA concretes incorporating GGBFS than the RCA concretes incorporating SF. An inverse relationship between the density and the water absorption ratio is observed in RCA concretes and this relation is more significant in higher amounts of RCA contents.
The effects of dimension-eight operators giving rise to anomalous neutral triple gauge boson interactions of Zγγ and ZγZ vertices in pp→l−l+γ and pp→νν¯γ are investigated at 100 TeV center of mass ...energy of future circular hadron collider (FCC-hh). The transverse momentum of photon, invariant mass of l−l+γ and angular distribution of charged lepton in the rest frame of l−l+ and Missing Energy Transverse (MET) are considered in the analysis. The realistic detector effects are also included with Delphes simulation. Sensitivity limits obtained at 95% C.L. for CB˜W/Λ4 and CBB/Λ4 couplings are −0.52;0.52(−0.40;0.40) TeV−4, −0.43;0.43(−0.33;0.33) TeV−4 in the dilepton+photon channel and −0.11;0.11(−0.084;0.084) TeV−4, −0.092;0.092(−0.072;0.072) TeV−4 in the MET+photon channel with Lint=1 (3) ab−1, respectively.
•Mechanical treatment method (Ball Milling Method) is applied to RA with an optimization process.•Initial RA water absorption value (8.95%) is decreased 0.84% after oBMM.•The optimum ‘enhanced’ RA ...use in concrete is found as 60%.
Numerous research studies were conducted to improve the weak properties of recycled aggregate as a construction material during the last two decades. Most of these studies mainly focused on minimizing the undesired characteristics of the recycled aggregate through various treatment techniques to strengthen the attached old mortar or remove it from the recycled aggregate. Mechanical Treatment Methods (MTMs) used to remove the attached mortar from the aggregates were evolved over the years. Among available methods of treatments in the literature, the number of studies investigated the MTMs with an optimization process is limited. In lack of proper optimization process with rubble quality identification, mechanical treatment methods may be ineffective to provide concretes with sufficient properties, and they may yield to extra energy consumption and carbon emission. In other words, the optimization of treatment methods and determination rubble quality are two essential steps for having satisfactory results on the recycled aggregate.
In this study, an optimization process is applied using the Los Angles test machine through the conducted Ball Milling Method (BMM). During the BMM process, various combinations of rotation (R) (100–200-300-400-500) and the steel ball (S) (0-2-5-7-10-12) applied to the recycled aggregate. Analysis results demonstrated the effectiveness of reducing the 8.95% water absorption value of the untreated recycled aggregate to 0.84% after the optimization process of BMM.
Then, seven concrete specimens including 0-20-40-60% recycled aggregate (RA) and improved recycled aggregate (RA-i) mixes produced in the framework of the experimental study. For comparison purposes, engineering properties of 28 days concrete are determined. The use of RA-i up to 60% in concrete has not influenced the physical and mechanical properties, distinctively. After the optimization process, the RA use in concrete increased up to 60% which is twofold of the optimum RA value in the literature. As a result, optimized BMM improved the mechanical and physical characteristics of RA and increased the use of RA ratio in concrete mixes without any trade-off.
Copper etching is considerably important process in electronics industry, particularly in the fabrication of printed circuit board. Various etchants can be used for this purpose, but nowadays cupric ...chloride is more accepted etchant, because of its high etch rate and easy regeneration properties. In the present study, copper etching process with cupric chloride etchant was investigated. In the etching of copper, the most important etching parameter is etch rate, therefore the investigation was based on the various effects on etch rate. The influence of etchant concentration, additives and etching temperature were examined. It is also important to regeneration/recycle of waste etchant from environmental point of view. Thus, various cupric chloride etchant regeneration processes were investigated.
We have studied the sensitivity to flavor changing neutral current interaction of top and Higgs boson at the future circular collider in the hadron-hadron collision mode (FCC-hh). Our main concerns ...are the processes of pp→th (FCNC production) and pp→tt¯ (one top FCNC decay) which contributes to the single lepton, at least three jets and the missing energy transverse in the final state. On the one hand FCC-hh offers very high luminosity and large cross section for these signal processes, on the other hand signal can be distinguished from background which needs application of ingenious methods. Here, we have inspired and followed the searches at the LHC using our analysis path and enhanced attainable limits obtained on the possible top-Higgs FCNC couplings phenomenologically. We obtain new limits which are beyond the current experimental limits obtained from different channels and processes at the LHC. The potential discovery or exclusion limits on branching ratios for tqH FCNC interactions can be set BR(ηuc)disc=9.08×10−6 or BR(ηuc)exc=2.78×10−6 at an integrated luminosity of 30ab−1, respectively. Our results are compatible with the other channels already studied at FCC-hh.
We investigate the sensitivity of the anomalous dimension-8 neutral triple gauge couplings via process pp→ννγ with fast detector simulation including pile-up effects for the post LHC experiments. The ...transverse momentum of the final state photon and missing energy transverse distributions are considered in the analysis. We obtain the sensitivity to the CB˜W/Λ4, CBB/Λ4, CWW/Λ4 and CBW/Λ4 couplings at HL-LHC and HE-LHC with an integrated luminosity of 3 ab−1 and 15 ab−1, respectively. Finally, our numerical results show that one can reach the constraints at 95% confidence level without systematic error on CB˜W/Λ4, CBB/Λ4, CWW/Λ4 and CBW/Λ4 couplings for HL-LHC (HE-LHC) as −0.38;0.38(−0.12;0.12), −0.21;0.21(−0.085;0.085), −1.08;1.08(−0.38;0.38) and −0.48;0.48(−0.25;0.25), respectively. They are better than the experimental limits obtained by LHC.
After the recent discovery of a neutral Higgs boson with a mass about 125 GeV, we assess the extend of discovery potential of future circular hadron collider (FCC-hh) for a charged Higgs boson in the ...bottom and top quark decay channel. The charged Higgs boson can be produced through the pp→h−t+X process with a subsequent decay h−→bt¯ channel. This decay channel is particularly important for studying the charged Higgs boson heavier than the top quark. We consider an extension of the standard model Higgs sector, namely two Higgs doublet model (2HDM), and perform a dedicated signal significance analysis to test this channel for the FCC-hh running at the center of mass energy of 100 TeV and the integrated luminosity of 1 ab−1 (initial), 3 ab−1 (comparison with HL-LHC) and 30 ab−1 (ultimate). We find that an important part of the parameter spaces of two Higgs doublet model is examinable at the FCC-hh.
In this study, we investigate the process pp→W±γ for the physics potential of the FCC-hh with s=100 TeV to examine the anomalous WWγ couplings defined by three CP-conserving and two CP-violating ...effective operators of dimension-6. The analysis containing the realistic detector effects is carried out in the mode where W± bosons in the final state decay into the leptonic channel. The best sensitivities obtained from the process pp→W±γ on the anomalous couplings CWWW/Λ2 and CW,B/Λ2 determined by CP-conserving effective Lagrangians are −0.010;0.010 TeV−2 and −0.40;0.41 TeV−2, while CW˜WW/Λ2 and CW˜/Λ2 couplings defined by CP-violating effective Lagrangian are obtained as −0.003;0.003 TeV−2 and −0.32;0.33 TeV−2 at the FCC-hh with Lint=30 ab−1. However, if the systematic uncertainty is included, we obtain reduced sensitivities on the anomalous WWγ coupling. The results are compared for assumed systematics of 5% and 10%.
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