463,959 research outputs found
Measurement of the branching fractions for Cabibbo-suppressed decays D+→K+K−π+π0 and D(s)+→K+π−π+π0 at Belle
No full textWe present measurements of the branching fractions for the singly Cabibbo-suppressed decays D+→K+K−π+π0 and D+s→K+π−π+π0, and the doubly Cabibbo-suppressed decay D+→K+π−π+π0, based on 980 fb−1 of data recorded by the Belle experiment at the KEKB e+e− collider. We measure these modes relative to the Cabibbo-favored modes D+→K−π+π+π0 and D+s→K+K−π+π0. Our results for the ratios of branching fractions are B(D+→K+K−π+π0)/B(D+→K−π+π+π0)=(11.32±0.13±0.26)%, B(D+→K+π−π+π0)/B(D+→K−π+π+π0)=(1.68±0.11±0.03)%, and B(D+s→K+π−π+π0)/B(D+s→K+K−π+π0)=(17.13±0.62±0.51)%, where the uncertainties are statistical and systematic, respectively. The second value corresponds to (5.83±0.42)×tan4θC, where θC is the Cabibbo angle; this value is larger than other measured ratios of branching fractions for a doubly Cabibbo-suppressed charm decay to a Cabibbo-favored decay. Multiplying these results by world average values for B(D+→K−π+π+π0) and B(D+s→K+K−π+π0) yields B(D+→K+K−π+π0)=(7.08±0.08±0.16±0.20)×10^−3, B(D+→K+π−π+π0)=(1.05±0.07±0.02±0.03)×10^−3, and B(D+s→K+π−π+π0)=(9.44±0.34±0.28±0.32)×10^−3, where the third uncertainty is due to the branching fraction of the normalization mode. The first two results are consistent with, but more precise than, the current world averages. The last result is the first measurement of this branching fraction
Analysis of Noise Coupling From a Power Distribution Network to Signal Traces in High-Speed Multilayer Printed Circuit Boards
No full textAs layout density increases in highly integrated multilayer printed circuit boards (PCBs), the noise that exists in the power distribution network (PDN) is increasingly coupled to the signal traces, and precise modeling to describe the coupling phenomenon becomes necessary. This paper presents a model to describe noise coupling between the power/ground planes and signal traces in multilayer systems. An analytical model for the coupling has been successfully derived, and the coupling mechanism was rigorously analyzed and clarified. Wave equations for a signal trace with power/ground noise were solved by imposing boundary conditions. Measurements in both the frequency and time domains have been conducted to confirm the validity of the proposed model
Search for violation in decays and observation of the Cabibbo-suppressed decay
No full textWe search for violation by measuring a -odd asymmetry in the
Cabibbo-suppressed decay, and
in the Cabibbo-favored and
decays. We use 980 of data collected by the Belle detector running at the KEKB
asymmetric-energy collider. The -violating -odd parameter
is measured to be
and
where the first
uncertainty is statistical and the second is systematic. We also report the
first observation of the Cabibbo-suppressed decay . The branching fraction is measured relative to
that of the analogous Cabibbo-favored decay :
Joshua Davis: Author of Spare Parts
No full textCitation: K-State First (2016). Joshua Davis: Author of Spare Parts [Flier]. Manhattan, Kansas: K-State First.Flyer advertising Joshua Davis's author talk at Kansas State University
Measurements of the branching fractions B (B ̄0 → D∗+ π-) and B(B ̄0 →D∗+ K-) and tests of QCD factorization
No full textUsing (771.6±10.6)×106 BB ̄ meson pairs recorded by the Belle experiment at the KEKB e+e- collider, we report the branching fractions B(B ̄0→D∗+π-)=(2.62±0.02±0.09)×10-3 and B(B ̄0→D∗+K-)=(2.22±0.06±0.08)×10-4; the quoted uncertainties are statistical and systematic, respectively. A measurement of the ratio of these branching fractions is also presented, RK/π=B(B ̄→D∗+K-)/B(B ̄→D∗+π-)=(8.41±0.24±0.13)×10-2, where systematic uncertainties due to the D∗+ meson reconstruction cancel out. Furthermore, we report a new QCD factorization test based on the measured ratios for B ̄→D∗+h- and B ̄→D∗+l-ν decays at squared momentum transfer values equivalent to the mass of the h=π or K hadron. The parameters |a1(h)| are measured to be |a1(π)|=0.884±0.004±0.003±0.016 and |a1(K)|=0.913±0.019±0.008±0.013, where the last uncertainties account for all external inputs. These values are approximately 15% lower than those expected from theoretical predictions. Subsequently, flavor SU(3) symmetry is tested by measuring the ratios for pions and kaons, |a1(K)|2/|a1(π)|2=1.066±0.042±0.018±0.023, as well as for different particle species. The ratio is consistent with unity and therefore no evidence for SU(3) symmetry breaking effects is found at the 5% precision level
Measurements of branching fraction ratios and CP-asymmetries in suppressed B-→D(→K+π-)K- and B-→D(→K+π-)π- decays
No full textAaltonen, T., Álvarez González, B., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Appel, J.A., Apresyan, A., Arisawa, T., Artikov, A., Asaadi, J., Ashmanskas, W., Auerbach, B., Aurisano, A., Azfar, F., Badgett, W., Barbaro-Galtieri, A., Barnes, V.E., Barnett, B.A., Barria, P., Bartos, P., Bauce, M., Bauer, G., Bedeschi, F., Beecher, D., Behari, S., Bellettini, G., Bellinger, J., Benjamin, D., Beretvas, A., Bhatti, A., Binkley, M., Bisello, D., Bizjak, I., Bland, K.R., Blumenfeld, B., Bocci, A., Bodek, A., Bortoletto, D., Boudreau, J., Boveia, A., Brigliadori, L., Brisuda, A., Bromberg, C., Brucken, E., Bucciantonio, M., Budagov, J., Budd, H.S., Budd, S., Burkett, K., Busetto, G., Bussey, P., Buzatu, A., Calancha, C., Camarda, S., Campanelli, M., Campbell, M., Canelli, F., Carls, B., Carlsmith, D., Carosi, R., Carrillo, S., Carron, S., Casal, B., Casarsa, M., Castro, A., Catastini, P., Cauz, D., Cavaliere, V., Cavalli-Sforza, M., Cerri, A., Cerrito, L., Chen, Y.C., Chertok, M., Chiarelli, G., Chlachidze, G., Chlebana, F., Cho, K., Chokheli, D., Chou, J.P., Chung, W.H., Chung, Y.S., Ciobanu, C.I., Ciocci, M.A., Clark, A., Clarke, C., Compostella, G., Convery, M.E., Conway, J., Corbo, M., Cordelli, M., Cox, C.A., Cox, D.J., Crescioli, F., Cuenca Almenar, C., Cuevas, J., Culbertson, R., Dagenhart, D., D'Ascenzo, N., Datta, M., De Barbaro, P., De Cecco, S., De Lorenzo, G., Dell'Orso, M., Deluca, C., Demortier, L., Deng, J., Deninno, M., Devoto, F., D'Errico, M., Di Canto, A., Di Ruzza, B., Dittmann, J.R., D'Onofrio, M., Donati, S., Dong, P., Dorigo, M., Dorigo, T., Ebina, K., Elagin, A., Eppig, A., Erbacher, R., Errede, D., Errede, S., Ershaidat, N., Eusebi, R., Fang, H.C., Farrington, S., Feindt, M., Fernandez, J.P., Ferrazza, C., Field, R., Flanagan, G., Forrest, R., Frank, M.J., Franklin, M., Freeman, J.C., Funakoshi, Y., Furic, I., Gallinaro, M., Galyardt, J., Garcia, J.E., Garfinkel, A.F., Garosi, P., Gerberich, H., Gerchtein, E., Giagu, S., Giakoumopoulou, V., Giannetti, P., Gibson, K., Ginsburg, C.M., Giokaris, N., Giromini, P., Giunta, M., Giurgiu, G., Glagolev, V., Glenzinski, D., Gold, M., Goldin, D., Goldschmidt, N., Golossanov, A., Gomez, G., Gomez-Ceballos, G., Goncharov, M., González, O., Gorelov, I., Goshaw, A.T., Goulianos, K., Grinstein, S., Grosso-Pilcher, C., Group, R.C., Guimaraes Da Costa, J., Gunay-Unalan, Z., Haber, C., Hahn, S.R., Halkiadakis, E., Hamaguchi, A., Han, J.Y., Happacher, F., Hara, K., Hare, D., Hare, M., Harr, R.F., Hatakeyama, K., Hays, C., Heck, M., Heinrich, J., Herndon, M., Hewamanage, S., Hidas, D., Hocker, A., Hopkins, W., Horn, D., Hou, S., Hughes, R.E., Hurwitz, M., Husemann, U., Hussain, N., Hussein, M., Huston, J., Introzzi, G., Iori, M., Ivanov, A., James, E., Jang, D., Jayatilaka, B., Jeon, E.J., Jha, M.K., Jindariani, S., Johnson, W., Jones, M., Joo, K.K., Jun, S.Y., Junk, T.R., Kamon, T., Karchin, P.E., Kasmi, A., Kato, Y., Ketchum, W., Keung, J., Khotilovich, V., Kilminster, B., Kim, D.H., Kim, H.S., Kim, H.W., Kim, J.E., Kim, M.J., Kim, S.B., Kim, S.H., Kim, Y.K., Kimura, N., Kirby, M., Klimenko, S., Kondo, K., Kong, D.J., Konigsberg, J., Kotwal, A.V., Kreps, M., Kroll, J., Krop, D., Krumnack, N., Kruse, M., Krutelyov, V., Kuhr, T., Kurata, M., Kwang, S., Laasanen, A.T., Lami, S., Lammel, S., Lancaster, M., Lander, R.L., Lannon, K., Lath, A., Latino, G., Lecompte, T., Lee, E., Lee, H.S., Lee, J.S., Lee, S.W., Leo, S., Leone, S., Lewis, J.D., Limosani, A., Lin, C.-J., Linacre, J., Lindgren, M., Lipeles, E., Lister, A., Litvintsev, D.O., Liu, C., Liu, Q., Liu, T., Lockwitz, S., Loginov, A., Lucchesi, D., Lueck, J., Lujan, P., Lukens, P., Lungu, G., Lys, J., Lysak, R., Madrak, R., Maeshima, K., Makhoul, K., Malik, S., Manca, G., Manousakis-Katsikakis, A., Margaroli, F., Marino, C., Martínez, M., Martínez-Ballarín, R., Mastrandrea, P., Mattson, M.E., Mazzanti, P., McFarland, K.S., McIntyre, P., McNulty, R., Mehta, A., Mehtala, P., Menzione, A., Mesropian, C., Miao, T., Mietlicki, D., Mitra, A., Miyake, H., Moed, S., Moggi, N., Mondragon, M.N., Moon, C.S., Moore, R., Morello, M.J., Morlock, J., Movilla Fernandez, P., Mukherjee, A., Muller, T., Murat, P., Mussini, M., Nachtman, J., Nagai, Y., Naganoma, J., Nakano, I., Napier, A., Nett, J., Neu, C., Neubauer, M.S., Nielsen, J., Nodulman, L., Norniella, O., Nurse, E., Oakes, L., Oh, S.H., Oh, Y.D., Oksuzian, I., Okusawa, T., Orava, R., Ortolan, L., Pagan Griso, S., Pagliarone, C., Palencia, E., Papadimitriou, V., Paramonov, A.A., Patrick, J., Pauletta, G., Paulini, M., Paus, C., Pellett, D.E., Penzo, A., Phillips, T.J., Piacentino, G., Pianori, E., Pilot, J., Pitts, K., Plager, C., Pondrom, L., Poprocki, S., Potamianos, K., Poukhov, O., Prokoshin, F., Pronko, A., Ptohos, F., Pueschel, E., Punzi, G., Pursley, J., Rahaman, A., Ramakrishnan, V., Ranjan, N., Redondo, I., Renton, P., Rescigno, M., Riddick, T., Rimondi, F., Ristori, L., Robson, A., Rodrigo, T., Rodriguez, 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A note on Kim-Ma characterization of the Hilbert ball
No full textThis is an open access article under the CC BY license.[No abstract available]Kortney Rose Foundation, KRF, (2002-070-C00005); National Research Foundation of Korea, NRF* Corresponding author. E-mail addresses: [email protected] (K.-T. Kim), [email protected] (D. Ma). 1 Research supported in part by the grant KRF 2002-070-C00005 from The Korea Research Foundation
Analysis and Suppression of SSN Noise Coupling Between Power/Ground Plane Cavities Through Cutouts in Multilayer Packages and PCBs
No full textWe introduce a model of simultaneous switching noise (SSN) coupling between the power/ground plane cavities through cutouts in high-speed and high-density multilayer packages and printed circuit boards (PCBs). Usually, the cutouts are used in multilayer plane structures to isolate the SSN of noisy digital circuits from sensitive analog circuits or to provide multiple voltage levels. The noise-coupling model is expressed in terms of the transfer impedance. The proposed modeling and analysis results are compared with measured data up to 10 GHz to demonstrate the validity of the model. It is demonstrated that the cutout is the major gate for SSN coupling between the plane cavities, and that substantial SSN coupling occurs between the plane cavities through the cutout at the resonant frequencies of the plane cavities. We also analyze and discuss the coupling mechanism and characteristics of the noise coupling, from which we evaluate a method of suppression of the SSN coupling. Proper positioning of the cutout and the devices at each plane cavity achieves significant noise suppression at certain resonant frequencies. The suggested suppression method of the SSN coupling was successfully proved by frequency domain measurement and time domain analysis
Study of B-bar 0 →D+h- (h=K/π) decays at Belle
No full textWe present a measurement of the branching fractions of the Cabibbo favored B ̄0→D+π- and the Cabibbo suppressed B ̄0→D+K- decays. We find B(B ̄0→D+π-)=(2.48±0.01±0.09±0.04)×10-3 and B(B ̄0→D+K-)=(2.03±0.05±0.07±0.03)×10-4 decays, where the first uncertainty is statistical, the second is systematic, and the third uncertainty is due to the D+→K-π+π+ branching fraction. The ratio of branching fractions of B ̄0→D+K- and B ̄0→D+π- is measured to be RD=[8.19±0.20(stat)±0.23(syst)]×10-2. These measurements are performed using the full Belle dataset, which corresponds to 772×106BB ̄ pairs and use the Belle II software framework for data analysis
Measurements of branching fraction ratios and CP-asymmetries in suppressed B^-→D(→K^+π^-)K- and B^-→D(→K^+π^-)π^- decays
No full text8 pages, 1 figure, submitted to Phys.Rev.D Rapid CommunicationsWe report the first reconstruction in hadron collisions of the suppressed decays B-→D(→K+π-)K- and B-→D(→K+π-)π-, sensitive to the Cabibbo-Kobayashi-Maskawa phase γ, using data from 7fb-1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B-→D(→K+π-)K- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K)=[22.0±8.6(stat)±2.6(syst)]×10-3, R+(K)=[42.6±13.7(stat)±2.8(syst)]×10-3, R-(K)=[3.8±10.3(stat)±2.7(syst)]×10-3 as well as the direct CP-violating asymmetry A(K)=-0.82±0.44(stat)±0.09(syst) of this mode. Corresponding quantities for B-→D(→K+π-)π- decay are also reported
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