Electron emission properties of two-phase argon and argon-nitrogen avalanche detectors (2009)
Bondar, A., Buzulutskov, A., Grebenuk, A., Pavlyuchenko, D., Tikhonov, Y.
Electron emission properties of two-phase Ar avalanche detectors are studied. The detectors investigated comprised a liquid Ar or Ar+N2 layer followed by a multi-GEM multiplier operated in the...
Flavor Physics in the Quark Sector (2009)
Antonelli, M, Asner, D M, Bauer, D, Becher, T, Beneke, M, Bevan, A J, ...
In the past decade, one of the major challenges of particle physics has been to gain an in-depth understanding of the role of quark flavor.In this time frame, measurements and the theoretical...
Flavor Physics in the Quark Sector (2009)
Antonelli, M., Asner, D. M., Bauer, D., Becher, T., Beneke, M., Bevan, A. J., ...
In the past decade, one of the major challenges of particle physics has been to gain an in-depth understanding of the role of quark flavor.In this time frame, measurements and the theoretical...
Seidl, R., Grosse Perdekamp, M., Ogawa, A., Adachi, I., Aihara, H., Bahinipati, S., ...
The Collins effect connects transverse quark spin with a measurable azimuthal asymmetry in the yield of hadronic fragments around the quark’s momentum vector. Using two different reconstruction...
Recent results on the properties of two-phase argon avalanche detectors (2008)
Bondar, A., Buzulutskov, A., Grebenuk, A., Pavlyuchenko, D., Tikhonov, Y.
The characteristic properties of two-phase Ar avalanche detectors, including those obtained with CsI photocathode, are further studied. Such detectors are relevant in the field of coherent...
Thick GEM versus thin GEM in two-phase argon avalanche detectors (2008)
Bondar, A., Buzulutskov, A., Grebenuk, A., Pavlyuchenko, D., Tikhonov, Y., Breskin, A.
The performance of thick GEMs (THGEMs) was compared to that of thin GEMs in two-phase Ar avalanche detectors, in view of their potential application in coherent neutrino-nucleus scattering,...
Olsen, S. L., Adachi, I., Aihara, H., Aulchenko, V., Aushev, T., ...
A distinct peak is observed in the π^±Ψ'invariant mass distribution near 4.43 GeV in B→ Kπ^±Ψ' decays. A fit using a Breit-Wigner resonance shape yields a peak mass and width of M = 4433±...
The WASA Detector Facility at CELSIUS (2008)
Bargholtz, Chr., Bashkanov, M., Berłowski, M., Bondar, A., Bogoslawsky, D., Brodowski, W., ...
The WASA 4pi multidetector system, aimed at investigating light meson production in light ion collisions and eta meson rare decays at the CELSIUS storage ring in Uppsala is presented. A detailed...
Search for \bar{B}^0 →Λ_c^+\bar{Λ}_c^- decay at Belle (2008)
Uchida, Y., Ozaki, H., Kichimi, H., Adachi, I., Aihara, H., Arinstein, K., ...
We search for the doubly charmed baryonic decay \bar{B}^0 →Λ_c^+\bar{Λ}_c^-, in a data sample of 520×106 B\bar{B} events accumulated at the Υ(4S) resonance with the Belle detector at the KEKB...
Observation of D_s1(2536)^+ → D^+π^-K^+ and angular decomposition of D_s1(2536)^+ →D^*+K_S^0 (2008)
Balagura, V., Adachi, I., Aihara, H., Arinstein, K., Aulchenko, V., Aushev, T., ...
Using 462 fb^{-1} of e^+e^- annihilation data recorded by the Belle detector, we report the first observation of the decay D_s1(2536)^+ → D+π^-K^+. The ratio of branching fractions...
Observation of the Ψ(4415)→ D\bar{D}_2^* (2460) Decay Using Initial-State Radiation (2008)
Pakhlova, G., Adachi, I., Aihara, H., Arinstein, K., Aulchenko, V., Aushev, T., ...
We report measurements of the exclusive cross section for e^+e^- →D^0D^-π^+ over the center-of-mass energy range 4.0 GeV to 5.0 GeV with initial-state radiation and the first observation of the...
Threshold Structure of the Quasi-Free (2008)
Reaction Cal'en, J. Dyring, K. Fransson, L. Gustafsson, S. Haggstrom, B. Hoistad, ...
The quasi-free p+n!d+j reaction cross section has been measured at threshold using 1295 MeV protons in the CELSIUS storage ring and an internal cluster-jet deuterium target. The kinematics is chosen...
Measurement of the Quasi-Free (2008)
Reaction Cal'en, J. Dyring, K. Fransson, L. Gustafsson, S. Haggstrom, B. Hoistad, ...
The first measurement of the quasi-free p+n!p+n+j reaction cross section has been made at the CELSIUS storage ring using a deuterium internal cluster jet target. The energy dependence of the cross...
The use of quantum-correlated D^0 decays for phi3 measurement (2008)
We report the results of the Monte-Carlo study of the method to determine the CKM angle phi3 using Dalitz plot analysis of D0 decay from B->DK process. Our main goal is to find the optimal strategy...
Pakhlova, G., Adachi, I., Aihara, H., Arinstein, K., Aulchenko, V., Aushev, T., ...
We report measurements of the exclusive cross section for e^+e^ →D\bar{D}, where D=D^0 or D^+, in the center-of-mass energy range from the D\bar{D} threshold to 5 GeV with initial-state...
Time-Dependent CP-Violating Asymmetry in B^0→p^0γ Decays (2008)
Ushiroda, Y., Sumisawa, K., Taniguchi, N., Adachi, I., Aihara, H., Arinstein, K., ...
We report the first measurement of CP-violation parameters in B^0 → p^0γ decays based on a data sample of 657×10^6B\bar{B} pairs collected with the Belle detector at the KEKB asymmetric-energy...
Measurement of eta meson decays into lepton-antilepton pairs (2007)
Berłowski, CELSIUS/WASA Collaboration: M., Bargholtz, Chr., Bashkanov, M., Bogoslawsky, D., Bondar, A., Calén, H., ...
A search for rare lepton decays of the eta meson was performed using the WASA detector at CELSIUS. Two candidates for double Dalitz decay eta->e+e-e+e- events are reported with a background of...
Higher Partial Waves in . . . (2007)
H. Calén, J. Dyring, G. Fäldt, K. Fransson, L. Gustafsson, S. Häggström, ...
Exclusive measurements of the production of j-mesons in the pp ! ppj reaction have been carried out at excess energies of 16 and 37 MeV above threshold. The distributions are dominated by the...
Measurement of the Quasi-Free (2007)
Reaction Near, J. Dyring, K. Fransson, L. Gustafsson, S. Haggstrom, B. Hoistad, ...
The quasi-free p+n!d+j reaction cross section has been measured in the near-threshold region using deuterium from an internal cluster-jet target and 1350 MeV protons in the CELSIUS storage ring. The...
Study of the bunch crossing identification at LHC using Microstrip Gas Chambers (2007)
F. Angelini, N. Bacchetta, R. Bellazzini, D. Bon, A. Bondar, M. Bozzo, ...
3)
Performance of a prototype of the CMS Central Detector (2007)
O. Adriani, F. Angelini, N. Bacchetta, G. Bagliesi, G. Barichello, A. Basti, ...
2)
Study of a model-independent method for the measurement of the angle phi_3 (2007)
This report shows the latest results on the study of the method to determine the angle phi_3 of the unitarity triangle using Dalitz plot analysis of $D^0$ decay from B->DK process in a...
Measurements of exclusive B^{0}_{s} decays at the γ(5S) resonance (2007)
Drutskoy, A., Abe, K., Adachi, I., Aihara, H., Anipko, D., Bakich, A. M., ...
Several exclusive B^{O}_{s} decays are studied using a 1.86 fb^{-1} data sample collected at the Υ(5S) resonance with the Belle detector at the KEKB asymmetric energy e^+e^- collider. In the...
Search for B decays into η'p, η'K^*, η'φ, η'ω and η'η^(') (2007)
Schümann, J., Wang, C. H., Abe, K., Aihara, H., Anipko, D., Arinstein, K., ...
We report on a search for the exclusive two-body charmless hadronic B meson decays B → η'ρ, B → η'K^*, B^0 → ηφ, B^0 → η'ω, and B0 →η'η^('). The results are obtained from a data...
Search for Invisible Decay of the Υ(1S) (2007)
Tajima, O., Hayashii, H., Hazumi, M., Inami, K., Iwasaki, Y., Uehara, S., ...
We report results of a search for the invisible decay of the Υ(1S) via the Υ(3S)→π+π-Υ(1S) transition using a data sample of 2.9 fb^{-1} at the Υ(3S) resonance. The data were collected with...
First results of the two-phase argon avalanche detector performance with CsI photocathode (2007)
Bondar, A., Buzulutskov, A., Grebenuk, A., Pavlyuchenko, D., Snopkov, R., Tikhonov, Y.
The performance of a two-phase Ar avalanche detector with CsI photocathode was studied, with regard to potential application in coherent neutrino-nucleus scattering and dark matter search...
Observation of B^+ → Λ^+_c Λ^－_c K^+ and B^0 → Λ^+_c Λ^－_c K^0 Decays (2006)
Gabyshev, N., Abe, K., Abe, K., Adachi, I., Aihara, H., Asano, Y., ...
We report the first measurements of the doubly charmed baryonic B decays B → Λ^+_c Λ^-_c K. The B+ → Λ^+_c Λ^-_c K+ decay is observed with a branching fraction of (6.5^{+1.0}_{-0.9}...
A two-phase argon avalanche detector operated in a single electron counting mode (2006)
Bondar, A., Buzulutskov, A., Grebenuk, A., Pavlyuchenko, D., Snopkov, R., Tikhonov, Y., ...
The performance of a two-phase Ar avalanche detector in a single electron counting mode was studied, with regard to potential application in coherent neutrino-nucleus scattering and dark matter...
Triple-GEM performance in He-based mixtures (2006)
Bondar, A., Buzulutskov, A., Shekhtman, L., Vasiljev, A.
The performance of triple-GEM detectors in He+N2 gas mixtures is studied in the range of 1-10 atm. The results obtained are relevant in the field of minimization of ionic space-charge effect in the...
Electric and Photoelectric Gates for ion backflow suppression in multi-GEM structures (2006)
A new approach to suppress ion backflow in multi-GEM structures is suggested. In this approach, the potential difference applied across the gap between two adjacent GEMs is reversed compared to the...
Light multi-GEM detector for high-resolution tracking systems (2005)
Bondar, A, Buzulutskov, A F, Oliveira, R, Ropelewski, Leszek, Sauli, Fabio, Shekhtman, L I
Controlled etching of copper electrodes in Gas Electron Multiplier foils allows a reduction of the material budget by more than a factor of two for a triple-GEM detector. Detectors making use of...
Light multi-GEM detector for high-resolution tracking systems (2005)
Bondar, A., Buzulutskov, A., De Oliveira, R., Ropelewski, L., Sauli, F., Shekhtman, L.
Controlled etching of copper electrodes in Gas Electron Multiplier foils allows a reduction of the material budget by more than a factor of two for a triple-GEM detector. Detectors making use of...
Two-phase argon and xenon avalanche detectors based on Gas Electron Multipliers (2005)
Bondar, A., Buzulutskov, A., Grebenuk, A., Pavlyuchenko, D., Snopkov, R., Tikhonov, Y.
We study the performance of two-phase avalanche detectors based on Gas Electron Multipliers (GEMs) and operated in an electron-avalanching mode in Ar and Xe. Emission, gain, energy resolution and...
We present results of a feasibility study of a model-independent way to measure the angle phi_3 of the unitarity triangle. The method involves B->DK decays where the neutral D decays to the K_S Pi+...
GEM operation in helium and neon at low temperatures (2005)
Buzulutskov, A., Dodd, J., Galea, R., Ju, Y., Leltchouk, M., Rehak, P., ...
We study the performance of Gas Electron Multipliers (GEMs) in gaseous He, Ne and Ne+H2 at temperatures in the range of 2.6-293 K. In He, at temperatures between 62 and 293 K, the triple-GEM...
Templating crystal growth at the nanometer-scale with monotropic columnar mesophase (2005)
Bondar, A, Lehmann, M, Bras, W, Koch, MHJ, ...
Crystallization from a monotropic columnar mesophase is shown to proceed via one-dimensional growth, in which the growing crystalline phase follows the columnar tracks of the "parent" mesophase (see...
LHCb Computing Technical Design Report (2005)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Magnin, J., ...
LHCb Computing Technical Design Report (2005)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Magnin, J., ...
LHCb Computing Technical Design Report (2005)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Magnin, J., ...
LHCb Computing Technical Design Report (2005)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Magnin, J., ...
LHCb Computing Technical Design Report (2005)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Magnin, J., ...
Dalitz Analysis of B->K+pi+pi- and B->K+K+pi- (2004)
We report results of the Dalitz analysis of the three-body charmless B->K+pi+pi- and B->K+K+K- decays based on a 140fb^{-1} data sample collected with the Belle detector. Measurements of branching...
Physics at Super B Factory (2004)
Akeroyd, A. G., Bartel, W., Bondar, A., Browder, T. E., Drutskoy, A., Enari, Y., ...
This report presents the results of studies that investigate the physics reach at a Super B factory, an asymmetric-energy e^+e^- collider with a design luminosity of 5 x 10^35 cm^-2s^-1, which is...
Cryogenic avalanche detectors based on gas electron multipliers (2004)
Bondar, A., Buzulutskov, A., Shekhtman, L., Snopkov, R., Tikhonov, Y.
We study the performances of gaseous and two-phase (liquid-gas) cryogenic detectors of ionizing radiation based on gas electron multipliers (GEMs) and operated in an avalanche mode in pure noble...
First results from cryogenic avalanche detectors based on gas electron multipliers (2003)
Buzulutskov, A., Bondar, A., Shekhtman, L., Snopkov, R., Tikhonov, Y.
We study the performance of gaseous and two-phase (liquid-gas) cryogenic detectors of ionizing radiation, based on gas electron multipliers (GEMs). For the first time, high gas gains, exceeding 10^4,...
LHCb reoptimized detector design and performance : Technical Design Report (2003)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Correade Oliveira, E., Magnin, J., ...
LHCb Trigger System : Technical Design Report (2003)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Correade Oliveira, E., Magnin, J., ...
LHCb reoptimized detector design and performance : Technical Design Report (2003)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Correade Oliveira, E., Magnin, J., ...
LHCb Trigger System : Technical Design Report (2003)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Correade Oliveira, E., Magnin, J., ...
LHCb Trigger System : Technical Design Report (2003)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Correade Oliveira, E., Magnin, J., ...
LHCb reoptimized detector design and performance : Technical Design Report (2003)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Correade Oliveira, E., Magnin, J., ...
LHCb Trigger System : Technical Design Report (2003)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Correade Oliveira, E., Magnin, J., ...
LHCb reoptimized detector design and performance : Technical Design Report (2003)
Antunes Nobrega, R., Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Correade Oliveira, E., Magnin, J., ...
Further studies of GEM performance in dense noble gases (2002)
Aulchenko, V., Bondar, A., Buzulutskov, A., Shekhtman, L., Snopkov, R., Tikhonov, Yu.
We further study the performance of single, double and triple Gas Electron Multiplier (GEM) detectors in pure noble gases at high pressures, in the range of 1-10 atm. We confirm that light noble...
Study of ion feedback in multi-GEM structures (2002)
Bondar, A., Buzulutskov, A., Shekhtman, L., Vasiljev, A.
We study the feedback of positive ions in triple and quadruple Gas Electron Multiplier (GEM) detectors. The effects of GEM hole diameter, detector gain, applied voltages, number of GEMs and other...
Triple GEM operation in compressed He and Kr (2002)
Bondar, A., Buzulutskov, A., Shekhtman, L., Snopkov, V., Vasiljev, A.
We study the performance of the triple GEM (Gas Electron Multiplier) detector in pure noble gases He and Kr at high pressures, varying from 1 to 15 atm. The operation in these gases is compared to...
LHCb Inner Tracker Technical Design Report (2002)
Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Magnin, J., ...
LHCb Inner Tracker Technical Design Report (2002)
Franca Barbosa, A., Bediaga, I., Cernicchiaro, G., Magnin, J., ...
Bondar, A., Buzulutskov, A., Shekhtman, L., Sokolov, A., Vasiljev, A.
Multiple-GEM detectors are considered to be good candidates for tracking devices in experiments with high hadronic background. We present the results of the triple-GEM detectors beam test in a high...
High pressure operation of the triple-GEM detector in pure Ne, Ar and Xe (2001)
Bondar, A., Buzulutskov, A., Shekhtman, L.
We study the performance of the triple-GEM (Gas Electron Multiplier) detector in pure noble gases Ne, Ar and Xe, at different pressures varying from 1 to 10 atm. In Ar and Xe, the maximum attainable...
LHCb online system technical design report: Data acquisition and experiment control (2001)
LHCb Collaboration, Barbosa-Marinho, PR, Bediaga, I, Barbosa, AF, Cernicchiaro, G, De Oliveira, EC, ...
LHCb Online system Data acquisition and experiment control : Technical design report (2001)
Bediaga, I., F. Barbosa, A., Cernicchiaro, G., Magnin, J., ...
LHCb outer tracker: Technical design report (2001)
Barbosa Marinho, P.R., Bediaga, I., Barbosa, A.F., Magnin, J., Massafferi, A., ...
LHCb muon system: Technical Design Report (2001)
Barbosa Marinho, P R., Bediaga, I., Cernicchiaro, G., Franca Barbosa, A., Magnin, J., ...
LHCb VELO (Vertex Locator): Technical Design Report (2001)
Barbosa Marinho, P R., Bediaga, I., Franca Barbosa, A., Magnin, J., Massafferri, A., ...
LHCb Online system Data acquisition and experiment control : Technical design report (2001)
Bediaga, I., F. Barbosa, A., Cernicchiaro, G., Magnin, J., ...
LHCb outer tracker: Technical design report (2001)
Barbosa Marinho, P.R., Bediaga, I., Barbosa, A.F., Magnin, J., Massafferi, A., ...
LHCb muon system: Technical Design Report (2001)
Barbosa Marinho, P R., Bediaga, I., Cernicchiaro, G., Franca Barbosa, A., Magnin, J., ...
LHCb VELO (Vertex Locator): Technical Design Report (2001)
Barbosa Marinho, P R., Bediaga, I., Franca Barbosa, A., Magnin, J., Massafferri, A., ...
LHCb calorimeters : Technical Design Report (2000)
Barbosa Marinho, P R., Bediaga, I., Cernicchiaro, G., Franca Barbosa, A., Magnin, J., ...
LHCb calorimeters : Technical Design Report (2000)
Barbosa Marinho, P R., Bediaga, I., Cernicchiaro, G., Franca Barbosa, A., Magnin, J., ...
Large scale test of wedge shaped micro strip gas counters (1999)
Ackermann, M., Atz, S., Aulchenko, V., Bachmann, S., Baiboussinov, B., Barthe, S., ...
Large scale test of wedge shaped micro strip gas counters (1999)
Ackermann, M., Atz, S., Aulchenko, V., Bachmann, S., Baiboussinov, B., Barthe, S., ...
Higher Partial Waves in p+p->p+p+eta near Threshold (1998)
Calen, H., Dyring, J., Faldt, G., Fransson, K., Gustafsson, L., Haggstrom, S., ...
Exclusive measurements of the production of eta mesons in the p+p->p+p+eta reaction have been carried out at excess energies of 16 and 37 MeV above threshold. The deviations from phase space are...
Study of the bunch crossing identification at LHC using microstrip gas chambers (1996)
Angelini, F., Bacchetta, N., Bellazzini, R., Bon, D., Bondar, A., Bozzo, M., ...
Study of the bunch crossing identification at LHC using microstrip gas chambers (1996)
Angelini, F., Bacchetta, N., Bellazzini, R., Bon, D., Bondar, A., Bozzo, M., ...
Detector Setup for a Storage Ring with an Internal Target. (1996)
S. Carius, K. Fransson, L. Gustafsson, S. Haggström, B. Höistad, T. Johansson, ...
A detector setup for the cooler storage ring CELSIUS is described. The setup detects particles produced in interactions between the internal beam and a gas jet target. Particles emitted in the...
Performance of a prototype of the CMS central detector (1995)
Adriani, O, Angelini, F, Bacchetta, N, Bagliesi, G, Barichello, G, Basti, A, ...