BURA Community:
http://bura.brunel.ac.uk/handle/2438/58
2017-03-23T00:53:25Z
2017-03-23T00:53:25Z
Search for anomalous Wtb couplings and flavour-changing neutral currents in t-channel single top quark production in pp collisions at √s=7 and 8 TeV
Khachatryan, V
Sirunyan, AM
Tumasyan, A
Adam, W
Asilar, E
Bergauer, T
Brandstetter, J
Brondolin, E
Dragicevic, M
Erö, J
Flechl, M
Friedl, M
Frühwirth, R
Ghete, VM
Hartl, C
Hörmann, N
Hrubec, J
Jeitler, M
König, A
Krätschmer, I
Liko, D
Matsushita, T
Mikulec, I
Rabady, D
Rad, N
Rahbaran, B
Rohringer, H
Schieck, J
Strauss, J
Treberer-Treberspurg, W
Waltenberger, W
Wulz, CE
Mossolov, V
Shumeiko, N
Suarez Gonzalez, J
Alderweireldt, S
De Wolf, EA
Janssen, X
Lauwers, J
Van De Klundert, M
Van Haevermaet, H
Van Mechelen, P
Van Remortel, N
Van Spilbeeck, A
Abu Zeid, S
Blekman, F
D Hondt, J
Daci, N
De Bruyn, I
Deroover, K
Heracleous, N
Lowette, S
Moortgat, S
Moreels, L
Olbrechts, A
Python, Q
Tavernier, S
Van Doninck, W
Van Mulders, P
Van Parijs, I
Brun, H
Caillol, C
Clerbaux, B
De Lentdecker, G
Delannoy, H
Fasanella, G
Favart, L
Goldouzian, R
Grebenyuk, A
Karapostoli, G
Lenzi, T
Léonard, A
Luetic, J
Maerschalk, T
Marinov, A
Randle-conde, A
Seva, T
Vander Velde, C
Vanlaer, P
Yonamine, R
Zenoni, F
Zhang, F
Cimmino, A
Cornelis, T
Dobur, D
Fagot, A
Garcia, G
Gul, M
Poyraz, D
Salva, S
Schöfbeck, R
Tytgat, M
Van Driessche, W
Yazgan, E
Zaganidis, N
http://bura.brunel.ac.uk/handle/2438/14266
2017-03-17T03:00:43Z
2017-01-01T00:00:00Z
Title: Search for anomalous Wtb couplings and flavour-changing neutral currents in t-channel single top quark production in pp collisions at √s=7 and 8 TeV
Authors: Khachatryan, V; Sirunyan, AM; Tumasyan, A; Adam, W; Asilar, E; Bergauer, T; Brandstetter, J; Brondolin, E; Dragicevic, M; Erö, J; Flechl, M; Friedl, M; Frühwirth, R; Ghete, VM; Hartl, C; Hörmann, N; Hrubec, J; Jeitler, M; König, A; Krätschmer, I; Liko, D; Matsushita, T; Mikulec, I; Rabady, D; Rad, N; Rahbaran, B; Rohringer, H; Schieck, J; Strauss, J; Treberer-Treberspurg, W; Waltenberger, W; Wulz, CE; Mossolov, V; Shumeiko, N; Suarez Gonzalez, J; Alderweireldt, S; De Wolf, EA; Janssen, X; Lauwers, J; Van De Klundert, M; Van Haevermaet, H; Van Mechelen, P; Van Remortel, N; Van Spilbeeck, A; Abu Zeid, S; Blekman, F; D Hondt, J; Daci, N; De Bruyn, I; Deroover, K; Heracleous, N; Lowette, S; Moortgat, S; Moreels, L; Olbrechts, A; Python, Q; Tavernier, S; Van Doninck, W; Van Mulders, P; Van Parijs, I; Brun, H; Caillol, C; Clerbaux, B; De Lentdecker, G; Delannoy, H; Fasanella, G; Favart, L; Goldouzian, R; Grebenyuk, A; Karapostoli, G; Lenzi, T; Léonard, A; Luetic, J; Maerschalk, T; Marinov, A; Randle-conde, A; Seva, T; Vander Velde, C; Vanlaer, P; Yonamine, R; Zenoni, F; Zhang, F; Cimmino, A; Cornelis, T; Dobur, D; Fagot, A; Garcia, G; Gul, M; Poyraz, D; Salva, S; Schöfbeck, R; Tytgat, M; Van Driessche, W; Yazgan, E; Zaganidis, N
Abstract: © 2017, The Author(s).Single top quark events produced in the t channel are used to set limits on anomalous Wtb couplings and to search for top quark flavour-changing neutral current (FCNC) interactions. The data taken with the CMS detector at the LHC in proton-proton collisions at s=7 and 8 TeV correspond to integrated luminosities of 5.0 and 19.7 fb−1, respectively. The analysis is performed using events with one muon and two or three jets. A Bayesian neural network technique is used to discriminate between the signal and backgrounds, which are observed to be consistent with the standard model prediction. The 95% confidence level (CL) exclusion limits on anomalous right-handed vector, and left- and right-handed tensor Wtb couplings are measured to be |fVR| < 0.16, |fTL| < 0.057, and − 0.049 < fTR < 0.048, respectively. For the FCNC couplings κtug and κtcg, the 95% CL upper limits on coupling strengths are |κtug|/Λ < 4.1 × 10− 3 TeV−1 and |κtcg|/Λ < 1.8 × 10− 2 TeV−1, where Λ is the scale for new physics, and correspond to upper limits on the branching fractions of 2.0 × 10−5 and 4.1 × 10−4 for the decays t → ug and t → cg, respectively.[Figure not available: see fulltext.]
2017-01-01T00:00:00Z
H<inf>∞</inf> Control for 2-D Fuzzy Systems With Interval Time-Varying Delays and Missing Measurements
Luo, Y
Wang, Z
Liang, J
Wei, G
Alsaadi, FE
http://bura.brunel.ac.uk/handle/2438/14220
2017-03-10T03:01:04Z
2017-01-01T00:00:00Z
Title: H<inf>∞</inf> Control for 2-D Fuzzy Systems With Interval Time-Varying Delays and Missing Measurements
Authors: Luo, Y; Wang, Z; Liang, J; Wei, G; Alsaadi, FE
Abstract: In this paper, we consider the H∞ control problem for a class of 2-D Takagi-Sugeno fuzzy described by the second Fornasini-Machesini local state-space model with time-delays and missing measurements. The state delays are allowed to be time-varying within a known interval. The measurement output is subject to randomly intermittent packet dropouts governed by a random sequence satisfying the Bernoulli distribution. The purpose of the addressed problem is to design an output-feedback controller such that the closed-loop system is globally asymptotically stable in the mean square and the prescribed H∞ performance index is satisfied. By employing a combination of the intensive stochastic analysis and the free weighting matrix method, several delay-range-dependent sufficient conditions are presented that guarantee the existence of the desired controllers for all possible time-delays and missing measurements. The explicit expressions of such controllers are derived by means of the solution to a class of convex optimization problems that can be solved via standard software packages. Finally, a numerical simulation example is given to demonstrate the applicability of the proposed control scheme.
2017-01-01T00:00:00Z
A study of the electrochemical performance of strip supercapacitors under static and dynamic mechanical tests
Zhang, R
Xu, Y
Harrison, D
Fyson, J
http://bura.brunel.ac.uk/handle/2438/14215
2017-03-10T03:01:08Z
2016-01-01T00:00:00Z
Title: A study of the electrochemical performance of strip supercapacitors under static and dynamic mechanical tests
Authors: Zhang, R; Xu, Y; Harrison, D; Fyson, J
Abstract: Flexible and stretchable supercapacitors have a big potential of being used in portable and wearable electronics because of their high power density, high reversibility, fast charge/discharge rates and long life cycles. In this study, strip supercapacitors were fabricated by a blade coating process using low-cost materials. The electrochemical performance of the strip supercapacitors was studied under both static and dynamic tensile stress conditions in order to evaluate their suitability for use in wearable textiles. The results showed strip supercapacitors under static and dynamic mechanical tensile process worked well: the capacitance and specific capacitance for this strip supercapacitor sample with the static loading of 100 N or 200 N was bigger than that of this sample without loading, with an increase of 22% and 9%, respectively. The mechanical compression was applied vertically from the top of the strip supercapacitor sample to further investigate the reason for the capacitance increase under loading conditions.
2016-01-01T00:00:00Z
Effects of mechanical turbo compounding on a turbocharged diesel engine
Teo Sheng Jye, A
Pesiridis, A
Rajoo, S
http://bura.brunel.ac.uk/handle/2438/14110
2017-02-23T11:07:26Z
2013-01-01T00:00:00Z
Title: Effects of mechanical turbo compounding on a turbocharged diesel engine
Authors: Teo Sheng Jye, A; Pesiridis, A; Rajoo, S
Abstract: This paper presents the simulation study on the effects of
mechanical turbo-compounding on a turbocharged diesel
engine. A downstream power-turbine has been coupled to the
exhaust manifold after the main turbocharger, in the aim to
recover waste heat energy. The engine in the current study is
Scania DC13-06, which 6 cylinders and 13 litre in capacity.
The possibilities, effectiveness and working range of the
turbo compounded system were analyzed in this study. The
system was modeled in AVL BOOST, which is a one
dimensional (1D) engine code. The current study found that
turbo compounding could possibly recover on average 11.4%
more exhaust energy or extra 3.7kW of power. If the system
is mechanically coupled to the engine, it could increase the
average engine power by up to 1.2% and improve average
BSFC by 1.9%.
2013-01-01T00:00:00Z