Author: "J S, Kang" / Topic: nuclear and high energy physics - Searchworks@Jio Institute Digital Library Search Results

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174 results on '"J S, Kang"'

1. KSTAR Status and Upgrade Plan Toward Fusion Reactor

Author: S. W. Yoon, H. J. Ahn, J. G. Bak, H. Han, K. R. Park, W. C. Kim, T. Rhee, Hyung Sik Kim, Jong-Gu Kwak, W. H. Ko, J. S. Kang, M. Kim, and Y. U. Nam
Subjects: Nuclear and High Energy Physics, Safety factor, Tokamak, Materials science, Nuclear engineering, Plasma, Fusion power, Condensed Matter Physics, Neutral beam injection, Bootstrap current, law.invention, Helicon, law, KSTAR
Abstract: Korea Superconducting Tokamak Advanced Research (KSTAR) program has made significant advances in the development of long pulse and high-performance plasma scenarios, utilizing the advantages of the fully superconducting tokamak. Ten years of KSTAR operation have produced outstanding progress in plasma control, extending the operating window of the plasma discharges, and achieving the H-mode up to 1.2 MA in plasma current, up to 90 s at top duration, and up to 2.16 in elongation. The unique features of the KSTAR device also produced a record 30 s long pulse in H-mode operation without an edge-localized-mode (ELM) crash, and progress in the fundamental transport physics through systematic study, using unique diagnostic capabilities. Therefore, the next near-term research focus will be on how to extend the high performance plasmas up to 300 s by overcoming scientific and engineering obstacles to steady state operation. For fusion reactors, the tokamak device needs to sustain a permanent plasma current. It is also known that the bootstrap current should play an important role in the plasma current for an efficient fusion reactor, and its contribution should be over as high as possible. An internal transport barrier discharge based on the reverse shear profile of the safety factor is one of the promising candidates for enhancing the bootstrap current. However, even in reverse shear mode, an additional external off axis current drive (CD) should be provided to control the current profile, as well as to supplement the plasma current. KSTAR has pursued steady state to operation, aiming for a fully non inductive state, based on real time (RT) plasma control by maximizing the long pulse capabilities of the superconducting machine. In order to deposit current at an arbitrary position, the first requirement is to have many highly efficient CD actuators capable of profile diversity. KSTAR has prepared several RF CD portfolios in addition to a conventional on and off axis CD neutral beam injection (NBI) system. The final target of an off axis current drive will be a 4 MW off-axis NB, 8 MW on-axis NB, 6 MW electron cyclotron heating (ECH), and 4 MW radio frequency heating and current drive (RFHCD) (ion cyclotron (IC), lower hybrid (LH), Helicon CD). In addition, as a long-term goal, demonstrating a long pulse core edge compatible plasma in a reactor relevant condition is important in present medium size tokamak, since it is expected to sustain a very high pressure pedestal height plasma using super H-mode, with parallel upgrades of the superconducting toroidal field (TF) coils.
Published: 2020

2. The K−π+ S-wave from the D+→K−π+π+ decay

Author: F. L. Fabbri, Y. Zhang, John Perry Cumalat, M. Boschini, A. Paris, K. B. Lee, L. Cinquini, V. Arena, D. Lopes Pegna, M. S. Nehring, P. H. Garbincius, M. Sheaff, Luigi Benussi, Kyung-Suk Cho, G. Chiodini, Iuri Muniz Pepe, C. Göbel, Harry Cheung, A. Sanchez-Hernandez, J. M. Link, S. Carrillo, R. Mitchell, M. H.L.S. Wang, A. Rahimi, Paolo Vitulo, V. Frisullo, C. M. Castromonte, P. D'Angelo, Erica Polycarpo, James R. Wilson, Luigi Moroni, J. Magnin, J. S. Kang, J. M. De Miranda, T. F. Davenport, Dario Menasce, S. Barberis, E. Luiggi, H. Hernandez, Germano Bonomi, G. Liguori, A. M. Lopez, J. W. Kwak, S. P. Ratti, Eric Wayne Vaandering, Marco A. Reyes, F. Vázquez, D. Y. Kim, Erik Gottschalk, A. C. dos Reis, J. Quinones, Stefano Bianco, S. Sala, A. Zallo, Cristina Riccardi, D. Engh, A. A. Machado, P. M. Yager, L. A. Garren, M. DiCorato, B. R. Ko, B. O'Reilly, J. N. Butler, G. Boca, Gianluca Alimonti, M. Mezzadri, James E Wiss, F. Leveraro, H. Park, T. Handler, A. Massafferri, Sandra Malvezzi, J. E. Moore, Daniele Pedrini, E. Casimiro, Ignacio Bediaga, P. Inzani, F. Prelz, L. Edera, Gabriele Gianini, I. Gaines, P. H. Kasper, Michael S. Webster, Robert Gardner, J. Otalora, Marco Rovere, C. Pontoglio, Kevin Stenson, Paul Sheldon, D. Pantea, A. E. Kreymer, C. Uribe, J. E. Ramirez, J. C. Anjos, C. Cawlfield, S. Erba, W. E. Johns, I. Segoni, E. Cuautle, Paolo Dini, M. Hosack, Agustín Cobos Cerutti, L. Agostino, A. Kryemadhi, M. M. Merlo, R. Kutschke, Y. S. Chung, and H. Mendez
Subjects: Physics, Nuclear and High Energy Physics, Amplitude, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Partial wave analysis, S-wave, Pi, Dalitz plot, High Energy Physics::Experiment, Statistical analysis, Atomic physics
Abstract: Using data from FOCUS (E831) experiment at Fermilab, we present a model independent partial-wave analysis of the K{sup -}{pi}{sup +} S-wave amplitude from the decay D{sup +} {yields} K{sup -}{pi}{sup +}{pi}{sup +}. The S-wave is a generic complex function to be determined directly from the data fit. The P- and D-waves are parameterized by a sum of Breit-Wigner amplitudes. The measurement of the S-wave amplitude covers the whole elastic range of the K{sup -}{pi}{sup +} system.
Published: 2009

3. Search for a pentaquark decaying to Ξ−π−

Author: C. Pontoglio, B. O'Reilly, Kevin Stenson, E. W. Vaandering, Paolo Dini, M. Hosack, E. Casimiro, Agustín Cobos Cerutti, Germano Bonomi, J. Magnin, I. Segoni, A. E. Kreymer, Daniele Pedrini, Gianluca Alimonti, S. Barberis, P. M. Yager, C. Uribe, J. E. Ramirez, Y. Zhang, Marco A. Reyes, James R. Wilson, G. Liguori, Stefano Bianco, P. Inzani, Robert K. Kutschke, C. M. Castromonte, D. Y. Kim, E. Luiggi, V. Arena, M. DiCorato, Gabriele Gianini, C. Cawlfield, D. Lopes Pegna, Cristina Riccardi, F. Vázquez, Luigi Benussi, P. D'Angelo, H. Park, D. Pantea, John Perry Cumalat, M. H.L.S. Wang, L. Cinquini, J. W. Kwak, S. P. Ratti, A. Rahimi, C. Göbel, Paolo Vitulo, James E Wiss, F. Leveraro, S. Sala, L. A. Garren, G. Chiodini, Sandra Malvezzi, J. M. Link, A. Zallo, S. Erba, A. Kryemadhi, D. Engh, M. Mezzadri, Ignacio Bediaga, B. R. Ko, F. L. Fabbri, Dario Menasce, F. Prelz, Kyung-Suk Cho, Erica Polycarpo, K. B. Lee, M. Sheaff, J. C. Anjos, V. Frisullo, Paul Sheldon, L. Edera, J. S. Kang, Harry Cheung, M. S. Nehring, J. Otalora, S. Carrillo, Erik Gottschalk, H. Hernandez, E. Cuautle, G. Boca, J. M. De Miranda, T. F. Davenport, W. E. Johns, M. M. Merlo, A. A. Machado, P. H. Kasper, Y. S. Chung, Iuri Muniz Pepe, H. Mendez, J. N. Butler, A. M. Lopez, I. Gaines, A. Paris, M. Boschini, P. H. Garbincius, A. Sanchez-Hernandez, L. Agostino, J. Quinones, Michael S. Webster, Robert Gardner, Marco Rovere, Luigi Moroni, A. C. dos Reis, R. Mitchell, T. Handler, and A. Massafferri
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Cascade, Branching fraction, Yield (chemistry), Pi, High Energy Physics::Experiment, Nuclear Experiment, Pentaquark
Abstract: We present a search for a pentaquark decaying strongly to $\Xi^-\pi^-$ in $\gamma N$ collisions at a center-of-mass energy up to 25 GeV/c^2. Finding no evidence for such a state in the mass range of 1480 MeV/c^2 to 2400 MeV/c^2, we set limits on the yield and on the cross section times branching ratio relative to $\Xi^*(1530)^0$.
Published: 2008

4. Study of Cabibbo suppressed decays of the Ds+ charmed-strange meson involving a KS0

Author: S. Barberis, H. Mendez, James E Wiss, L. Agostino, F. Leveraro, Luigi Moroni, D. Y. Kim, S. Erba, A. Kryemadhi, M. DiCorato, H. Park, J. Magnin, James R. Wilson, C. Cawlfield, Dario Menasce, G. Chiodini, Paul Sheldon, L. Edera, A. C. dos Reis, I. Segoni, E. Cuautle, Michael S. Webster, G. Liguori, M. H.L.S. Wang, A. Rahimi, G. Boca, D. Pantea, R. Kutschke, Robert Gardner, Marco Rovere, John Perry Cumalat, J. Otalora, C. Göbel, P. H. Kasper, Y. S. Chung, F. Vázquez, S. Sala, L. Cinquini, Paolo Vitulo, V. Arena, R. S. Tucker, Eric Wayne Vaandering, D. Lopes Pegna, Luigi Benussi, Germano Bonomi, Daniele Pedrini, I. Gaines, Marco A. Reyes, Erica Polycarpo, Kyung-Suk Cho, Gianluca Alimonti, M. Sheaff, Ignacio Bediaga, S. Carrillo, M. M. Merlo, J. M. Link, Paolo Dini, T. Handler, A. Massafferri, M. Hosack, E. Casimiro, Sandra Malvezzi, M. Mezzadri, A. E. Kreymer, L. A. Garren, P. Inzani, J. M. De Miranda, Agustín Cobos Cerutti, T. F. Davenport, B. O'Reilly, F. L. Fabbri, C. Uribe, J. E. Ramirez, F. Prelz, A. M. Lopez, Erik Gottschalk, Y. Zhang, Iuri Muniz Pepe, J. N. Butler, P. M. Yager, A. A. Machado, M. Boschini, Gabriele Gianini, J. W. Kwak, S. P. Ratti, P. H. Garbincius, M. S. Nehring, A. Sanchez-Hernandez, D. Engh, A. Paris, B. R. Ko, V. Frisullo, J. S. Kang, W. E. Johns, J. C. Anjos, E. Luiggi, H. Hernandez, R. Mitchell, A. Zallo, C. Pontoglio, Kevin Stenson, C. M. Castromonte, P. D'Angelo, J. Quinones, K. B. Lee, Harry Cheung, Stefano Bianco, and Cristina Riccardi
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Meson, Branching fraction, Mass spectrum
Abstract: We study the decay of D s + mesons into final states involving a K S 0 and report the discovery of Cabibbo suppressed decay modes D s + → K S 0 π − π + π + ( 179 ± 36 events) and D s + → K S 0 π + ( 113 ± 26 events). The branching fraction ratios for the new modes are Γ ( D s + → K S 0 π − π + π + ) Γ ( D s + → K S 0 K − π + π + ) = 0.18 ± 0.04 ± 0.05 and Γ ( D s + → K S 0 π + ) Γ ( D s + → K S 0 K + ) = 0.104 ± 0.024 ± 0.014 .
Published: 2008

5. Dalitz plot analysis of the D+→K−π+π+ decay in the FOCUS experiment

Author: V. Arena, D. Lopes Pegna, Luigi Benussi, K. B. Lee, Harry Cheung, Ignacio Bediaga, Stefano Bianco, Cristina Riccardi, J. Magnin, Dario Menasce, L. Edera, Paolo Dini, M. Hosack, E. Casimiro, Michael R. Pennington, J. Otalora, Agustín Cobos Cerutti, Erik Gottschalk, S. Carrillo, Michael S. Webster, Robert Gardner, Marco Rovere, Paul Sheldon, J. M. De Miranda, T. F. Davenport, James E Wiss, F. Leveraro, L. Agostino, A. A. Machado, E. Luiggi, H. Hernandez, Kyung-Suk Cho, J. Quinones, Gianluca Alimonti, W. E. Johns, Luigi Moroni, B. R. Ko, Marco A. Reyes, S. Erba, A. C. dos Reis, A. M. Lopez, R. Mitchell, Sandra Malvezzi, A. Kryemadhi, D. Pantea, C. Cawlfield, C. M. Castromonte, Eric Wayne Vaandering, Germano Bonomi, P. D'Angelo, F. Prelz, G. Chiodini, J. C. Anjos, J. W. Kwak, S. P. Ratti, R. Kutschke, D. Y. Kim, L. A. Garren, C. Göbel, P. M. Yager, M. Sheaff, D. Engh, Y. S. Chung, Daniele Pedrini, P. Inzani, Paolo Vitulo, Erica Polycarpo, A. Paris, M. H.L.S. Wang, A. Rahimi, H. Mendez, G. Boca, Iuri Muniz Pepe, M. Mezzadri, M. M. Merlo, S. Barberis, John Perry Cumalat, B. O'Reilly, Y. Zhang, A. E. Kreymer, C. Uribe, J. E. Ramirez, V. Frisullo, I. Segoni, E. Cuautle, T. Handler, A. Massafferri, L. Cinquini, J. S. Kang, J. N. Butler, I. Gaines, P. H. Kasper, M. Boschini, P. H. Garbincius, A. Sanchez-Hernandez, J. M. Link, A. Zallo, C. Pontoglio, Kevin Stenson, Gabriele Gianini, M. DiCorato, H. Park, James R. Wilson, G. Liguori, F. Vázquez, F. L. Fabbri, M. S. Nehring, and S. Sala
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Chiral perturbation theory, Distribution (mathematics), Scattering, Isospin, Dalitz plot, High Energy Physics::Experiment, State (functional analysis), Fermilab, Perturbation theory
Abstract: Using data collected by the high energy photoproduction experiment FOCUS at Fermilab we performed a Dalitz plot analysis of the Cabibbo favored decay D{sup +} {yields} K{sup -}{pi}{sup +}{pi}{sup +}. This study uses 53653 Dalitz-plot events with a signal fraction of {approx} 97%, and represents the highest statistics, most complete Dalitz plot analysis for this channel. Results are presented and discussed using two different formalisms. The first is a simple sum of Breit-Wigner functions with freely fitted masses and widths. It is the model traditionally adopted and serves as comparison with the already published analyses. The second uses a K-matrix approach for the dominant S-wave, in which the parameters are fixed by first fitting K{pi} scattering data and continued to threshold by Chiral Perturbation Theory. We show that the Dalitz plot distribution for this decay is consistent with the assumption of two body dominance of the final state interactions and the description of these interactions is in agreement with other data on the K{pi} final state.
Published: 2007

6. A non-parametric approach to measuring the K−π+ amplitudes in D+→K−K+π+ decay

Author: Marco A. Reyes, I. Segoni, E. Cuautle, Germano Bonomi, R. Kutschke, Willard Johns, Y. S. Chung, B. O'Reilly, Paolo Dini, M. Hosack, E. Casimiro, V. Frisullo, J. S. Kang, T. Handler, A. Massafferri, Agustín Cobos Cerutti, Eric Wayne Vaandering, K. B. Lee, P. M. Yager, D. Y. Kim, M. Boschini, P. H. Garbincius, A. Sanchez-Hernandez, M. M. Merlo, Paul Sheldon, M. DiCorato, L. A. Garren, A. Paris, Michael S. Webster, Robert Gardner, H. Mendez, Sandra Malvezzi, G. Boca, Marco Rovere, Y. Zhang, D. Engh, G. Chiodini, Gianluca Alimonti, Gabriele Gianini, J. Magnin, H. Park, Daniele Pedrini, Dario Menasce, Harry Cheung, C. Pontoglio, Kevin Stenson, F. Prelz, P. Inzani, J. M. Link, C. Göbel, S. Erba, B. R. Ko, John Perry Cumalat, Kyung-Suk Cho, Luigi Moroni, M. Sheaff, J. Quinones, L. Agostino, V. Arena, M. H.L.S. Wang, A. Rahimi, L. Cinquini, R. Mitchell, D. Lopes Pegna, A. Kryemadhi, A. C. dos Reis, A. Zallo, Luigi Benussi, Erica Polycarpo, Iuri Muniz Pepe, J. C. Anjos, M. S. Nehring, A. M. Lopez, S. Barberis, Paolo Vitulo, J. W. Kwak, Stefano Bianco, C. Cawlfield, Cristina Riccardi, James R. Wilson, G. Liguori, C. M. Castromonte, P. D'Angelo, F. Vázquez, Erik Gottschalk, A. A. Machado, M. Mezzadri, Fabrizio Fabbri, D. Pantea, E. Luiggi, H. Hernandez, A. E. Kreymer, C. Uribe, J. E. Ramirez, I. Gaines, P. H. Kasper, J. N. Butler, James E Wiss, F. Leveraro, L. Edera, J. Otalora, S. Sala, Sergio P Ratti, Ignacio Bediaga, S. Carrillo, J. M. De Miranda, and T. F. Davenport
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Crystallography, Amplitude, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Bar (unit), Large sample
Abstract: Using a large sample of D{sup +} {yields} K{sup -}K{sup +}{pi}{sup +} decays collected by the FOCUS photoproduction experiment at Fermilab, we present the first non-parametric analysis of the K{sup -}{pi}{sup +} amplitudes in D{sup +} {yields} K{sup -}K{sup +}{pi}{sup +} decay. The technique is similar to the technique used for our non-parametric measurements of the D{sup +} {yields} {bar K}*{sup 0} e{sup +}{nu} form factors. Although these results are in rough agreement with those of E687, we observe a wider S-wave contribution for the {bar K}*{sub 0}{sup 0}(1430) contribution than the standard, PDG [1] Breit-Wigner parameterization. We have some weaker evidence for the existence of a new, D-wave component at low values of the K{sup -}{pi}{sup +} mass.
Published: 2007

7. Centrality dependence of low-momentum direct-photon production inAu+Aucollisions atsNN=200 GeV

Author: A. G. Litvinenko, D. Kawall, K. N. Barish, S. Sano, A. Kozlov, R. Seto, M. L. Brooks, A. Deshpande, I. Danchev, X. He, Y. Aramaki, V. Peresedov, Robert Vertesi, J. Koster, Y. Fukao, H. Masui, A. A. Bickley, A. Veicht, M. Tomášek, T. Murakami, Maya Hachiya Shimomura, S. Dairaku, J. T. Mitchell, G. S. Kyle, M. Kurosawa, L. Guo, Alexei Khanzadeev, R. S. Hollis, Shinichi Masumoto, Jen-Chieh Peng, A. Sen, V. S. Pantuev, M. Sano, Y. I. Makdisi, R. A. Soltz, H. A. Gustafsson, T. Hester, M. Gonin, M. Grosse Perdekamp, S. Afanasiev, N. A. Sparks, K. S. Sim, Vladimir Samsonov, M. E. Connors, James Alexander, S. Baumgart, T. Todoroki, B. Lewis, C. Zhang, Tomoya Tsuji, M. Mendoza, S. N. White, A. Sukhanov, Y. Ikeda, S. Sawada, Masamichi Ishihara, R. Seidl, Vladislav Manko, M. Slunečka, A. Enokizono, D. Reynolds, K. Kurita, H. Pereira, Beomkyu Kim, O. Dietzsch, E. Stenlund, R. Averbeck, Byung-Sik Hong, Y. Tanaka, Hongfang Liu, P. Chung, Wei Xie, Minghui Liu, Y. Morino, R. Yang, P. Ružička, J. B. Choi, S. Belikov, E. Mannel, M. Virius, E. T. Atomssa, H. Valle, Dipak Kumar Mishra, A. Bazilevsky, D. E. Fields, K. Watanabe, J. Imrek, R. Akimoto, Dipanwita Dutta, Zvi Hirsh Citron, Inkyu Park, S. Taneja, M. J. Tannenbaum, M. Javani, B. V. Jacak, Peter Christiansen, A. Datta, C. O. Kim, K. Shoji, M. Heffner, C. Gal, H. Torii, K. Nakano, Xiong Wang, Tomofumi Nagae, Kenneth Francis Read, Julia Velkovska, K. B. Kim, R. Pak, H. Asano, J. L. Nagle, I. J. Choi, D. Winter, T. Ichihara, W. E. Sondheim, D. Ivanischev, J. Jin, K. Imai, P. Castera, P. W. Stankus, M. McCumber, C. H. Chen, M. Stepanov, E. Tennant, M. Rosati, Alexandre Lebedev, C. Pinkenburg, Viktor Riabov, C. Vale, D. Yu Peressounko, N. Grau, E. M. Takagui, Dong Jo Kim, Tamás Csörgő, N. Riveli, T. V. Moukhanova, P. Tarján, M. Leitgab, R. S. Towell, Ajit Kumar Mohanty, T. A. Shibata, C. L. Silva, A. Manion, K. Boyle, P. A. Rukoyatkin, K. Okada, K. Karatsu, A. Garishvili, T. Sato, H. J. Moon, L. Baksay, Alice Mignerey, L. D'Orazio, S. Miyasaka, G. Roche, C. Silvestre, I. Ravinovich, I. Garishvili, F. Wei, Y. Hori, Anne Marie Sickles, Tadaaki Isobe, J. Hanks, A. Yu. Semenov, Y. Nakamiya, D. Lynch, Y. Tsuchimoto, K. Gainey, D. M. Lee, A. A. Vinogradov, Kyeongpil Lee, Marisilvia Donadelli, V. Bumazhnov, B. Meredith, Charles Maguire, Sung Keun Park, Takao Sakaguchi, G. Baksay, Motoi Inaba, X. Bing, O. Chvala, J. S. Bok, P. L. McGaughey, D. Kotchetkov, N. N. Ajitanand, H. En'yo, M. Bai, A. Dion, M. I. Nagy, A. D. Frawley, Jiangyong Jia, Y. Goto, S. Choi, J. Ide, R. M. Wright, Seong H. Kim, John Hill, M. J. Leitch, S. Huang, E. C. Aschenauer, J. P. Wood, M. Sarsour, Mate Csanad, A. Iordanova, R. Tanabe, Johannes Peter Wessels, B. Sahlmueller, J. G. Lajoie, Takahiro Nakamura, G. R. Young, W. Holzmann, Alexander Milov, Hiromi Iinuma, C. Y. Chi, Y. J. Kim, Toru Sugitate, T. Hachiya, J. E. Frantz, D. McGlinchey, D. Kleinjan, K. V. Dharmawardane, S. Whitaker, K. Kiriluk, I. Nakagawa, H. Qu, Senta Greene, R. Luechtenborg, Young-Ki Kim, T. Engelmore, N. Novitzky, S. Yokkaichi, Kiyoshi Tanida, M. Nihashi, F. Matathias, A. Kravitz, Y. Onuki, Susumu Oda, O. Drapier, C. Baumann, S. Kametani, A. T. Basye, Kensuke Homma, E. Richardson, K. B. Lee, Y. J. Mao, A. Durum, M. S. Daugherity, B. Komkov, Rushan Han, C. P. Singh, D. Watanabe, Frank Ellinghaus, Dmitry Blau, Y. Miyachi, Jan Rak, Zhiying You, Hideki Hamagaki, K. Aoki, C. Nattrass, M. Vargyas, Martin Purschke, C. A. Aidala, P. Constantin, B. M. Johnson, M. D. Malik, R. Lacey, B. Fadem, E. Vznuzdaev, E. R. Kinney, Y. Watanabe, François Fleuret, R. P. Pisani, D. P. Morrison, E. Kistenev, Filip Krizek, R. Bennett, M. Kawashima, J. H. Kang, Atsushi Takahara, J. S. Haggerty, S. R. Lee, R. Granier de Cassagnac, A. Adare, E. O'Brien, D. Hornback, G. David, K. I. Hahn, L. Ding, K. A. Drees, A. Ster, R. J. Petti, A. Isupov, B. Bassalleck, M. Konno, S. Campbell, B. H. Kang, Y. J. Kwon, D. Isenhower, E. J. Desmond, D. Roach, K. M. Kijima, Norio Saito, Tsutomu Mibe, S. Bathe, H. Al-Ta'Ani, M. Finger, Tatsuya Chujo, I. Tserruya, J. Klatsky, S. Wolin, J. Sziklai, A. Toia, Agneta Oskarsson, Yu. Efremenko, J. Ying, A. Franz, M. Togawa, Takahiro Fusayasu, I. Younus, Jongmin Lee, J. Newby, Brian Cole, V. Singh, N. Kamihara, M. A. L. Leite, E. Vazquez-Zambrano, A. Nederlof, Y. Berdnikov, S. H. Lee, Y. Akiba, Y. S. Lai, M. Ouchida, Alexander Malakhov, N. Means, C. McKinney, M. Mishra, J. Park, S. Nagamiya, K. Das, E. P. Hartouni, Byoungchoo Park, J. S. Kang, S. H. Lim, Vaclav Vrba, Klaus Johannes Reygers, J. Sun, Rui Wei, D. Silvermyr, M. Naglis, M. Kasai, H. Pei, A. Drees, A. Taketani, A. Glenn, L. S. Zolin, T. L. Thomas, R. Belmont, C. M. Camacho, W. J. Park, J. S. Kapustinsky, A. Kiss, Eunja Kim, Christopher Rosen, Prashant Shukla, T. Kempel, Dong-Hun Kim, V. Babintsev, Aaron Angerami, S. Kaneti, I. E. Yushmanov, Eun-Hee Kim, Ryugo S. Hayano, Henner Buesching, Steve Edwards, A. Yanovich, Y. Riabov, Kenta Shigaki, M. Chiu, S. F. Pate, X. Jiang, M. Nguyen, Taku Gunji, H. Gong, J. Seele, C. A. Ogilvie, M. Soumya, X. Gong, Ke. Nakamura, A. S. Nyanin, T. K. Hemmick, Marcus Hohlmann, J. M. Durham, Yasuo Miake, Rachid Nouicer, A. N. Zelenski, M. Proissl, F. Kajihara, W. A. Zajc, Torsten Dahms, H. Themann, L. Kochenda, M. Issah, L. A. Linden Levy, H. J. Kim, C. L. Woody, A. Berdnikov, J. Murata, H. Al-Bataineh, P. Rosnet, V. Baublis, A. Taranenko, K. O. Eyser, A. K. Purwar, K. Fujiwara, Gerd Joachim Kunde, I. Shein, A. Denisov, Yuki Watanabe, K. Sakashita, D. Kotov, Y. L. Yamaguchi, A. V. Kazantsev, K. Sedgwick, V. Cianciolo, Y. Komatsu, Kazushi Miki, Mihael Makek, D. S. Jumper, E. Leitner, S. Butsyk, J. Hamblen, T. Horaguchi, Jason Kamin, I. V. Sourikova, Brajesh K. Singh, Sergey Fokin, S. P. Stoll, L. Tomášek, P. Mikeš, Soren Pontoppidan Sorensen, S. Motschwiller, H. W. Van Hecke, A. Morreale, S. S.E. Rosendahl, Z. Fraenkel, R. K. Choudhury, K. S. Joo, A. Rakotozafindrabe, N. Apadula, A. Vossen, S. Esumi, D. Sharma, R. Ichimiya, G. Bunce, S. Zhou, S. Tarafdar, D. Ivanishchev, B. Azmoun, L. Patel, A. Král, D. Jouan, V. Papavassiliou, T. C. Awes, Kyoichiro Ozawa, T. Liška, Eva Haslum, B. Lenzi, M. Oka, P. Kline, K. S. Lee, P. Liebing, S. D. Rolnick, Bum-Hoon Lee, M. Wysocki, B. Bannier, K. Yamaura, K. Hashimoto, Xingguo Li, and B. Love
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Exponential distribution, Photon, 010308 nuclear & particles physics, Inverse, 01 natural sciences, Momentum, Nuclear physics, Yield (chemistry), 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Centrality, Scaling
Abstract: The PHENIX experiment at RHIC has measured the centrality dependence of the direct photon yield from Au+Au collisions at sNN−−−√=200 GeV down to pT=0.4 GeV/c. Photons are detected via photon conversions to e+e− pairs and an improved technique is applied that minimizes the systematic uncertainties that usually limit direct photon measurements, in particular at low pT. We find an excess of direct photons above the Ncoll-scaled yield measured in p+p collisions. This excess yield is well described by an exponential distribution with an inverse slope of about 240MeV/c in the pT range 0.6–2.0 GeV/c. While the shape of the pT distribution is independent of centrality within the experimental uncertainties, the yield increases rapidly with increasing centrality, scaling approximately with Nαpart, where α=1.38±0.03(stat)±0.07(syst).
Published: 2015

8. Heavy-quark production and elliptic flow in Au + Au collisions atsNN=62.4GeV

Author: Alexander Milov, B. Azmoun, M. Rosati, A. Král, I. Nakagawa, Young-Ki Kim, Tamás Csörgő, T. Engelmore, N. Novitzky, Vladimir Samsonov, Alice Mignerey, Prashant Shukla, S. F. Pate, M. Kurosawa, L. D'Orazio, T. Todoroki, S. Miyasaka, N. Grau, Ke. Nakamura, O. Drapier, E. R. Kinney, D. P. Morrison, S. Campbell, Ryugo S. Hayano, P. Kline, K. S. Lee, Y. Riabov, H. Themann, A. V. Kazantsev, B. H. Kang, B. Lewis, L. Tomášek, Soren Pontoppidan Sorensen, L. Patel, T. C. Awes, Kyoichiro Ozawa, L. Guo, Alexei Khanzadeev, Jiangyong Jia, Y. Goto, Kenta Shigaki, S. Baumgart, Takao Sakaguchi, H. Al-Ta'Ani, R. A. Soltz, Shinichi Masumoto, Minghui Liu, A. S. Nyanin, E. Stenlund, Tatsuya Chujo, Rachid Nouicer, A. N. Zelenski, M. Proissl, Tomofumi Nagae, J. L. Nagle, P. Castera, K. V. Dharmawardane, J. Murata, Atsushi Takahara, D. E. Fields, B. V. Jacak, Kenneth Francis Read, X. He, A. D. Frawley, J. B. Choi, S. Motschwiller, Martin Purschke, C. A. Aidala, D. Ivanishchev, Dipak Kumar Mishra, E. M. Takagui, M. S. Daugherity, M. Sarsour, Mate Csanad, A. Iordanova, M. Grosse Perdekamp, V. Papavassiliou, S. Huang, Gerd Joachim Kunde, I. Tserruya, Yu. Efremenko, K. A. Drees, P. L. McGaughey, C. P. Singh, B. M. Johnson, Filip Krizek, M. Tomášek, V. Singh, Y. J. Kwon, M. Nihashi, R. J. Petti, M. McCumber, D. Kleinjan, I. Shein, Y. Aramaki, G. S. Kyle, Robert Vertesi, R. K. Choudhury, M. E. Connors, M. Ouchida, D. Watanabe, Marisilvia Donadelli, V. Bumazhnov, K. S. Joo, N. Riveli, R. P. Pisani, E. Vznuzdaev, H. Pei, N. Apadula, James Alexander, Maya Hachiya Shimomura, R. S. Hollis, X. Bing, O. Chvala, T. V. Moukhanova, Jongmin Lee, H. A. Gustafsson, H. Qu, Dmitry Blau, Taku Gunji, J. Hanks, Tomoya Tsuji, K. Sedgwick, A. Vossen, J. Sziklai, M. Mendoza, J. S. Kang, J. Klatsky, Y. I. Makdisi, Y. Fukao, K. S. Sim, S. Esumi, D. Sharma, Byung-Sik Hong, C. L. Woody, A. Berdnikov, A. Bazilevsky, T. Hester, Mihael Makek, A. Deshpande, J. G. Lajoie, Sung Keun Park, J. Koster, N. N. Ajitanand, Bum-Hoon Lee, Viktor Riabov, T. Hachiya, A. Glenn, S. Whitaker, Peter Christiansen, A. Sen, V. S. Pantuev, D. Winter, E. J. Desmond, Brian Cole, R. S. Towell, I. Garishvili, F. Wei, A. Datta, M. Sano, M. Wysocki, Eunja Kim, E. Vazquez-Zambrano, Aaron Angerami, M. J. Tannenbaum, S. N. White, R. Yang, Alexandre Lebedev, D. M. Lee, M. Leitgab, I. V. Sourikova, A. Nederlof, Takahiro Nakamura, K. B. Lee, D. Yu Peressounko, B. Bannier, D. McGlinchey, Jen-Chieh Peng, Y. Watanabe, W. A. Zajc, A. Taketani, S. Taneja, J. E. Frantz, Y. Miyachi, H. Torii, V. Baublis, A. Denisov, Yuki Watanabe, Motoi Inaba, V. Cianciolo, T. Murakami, D. Reynolds, O. Dietzsch, H. J. Kim, Inkyu Park, I. Younus, Sergey Fokin, M. Kasai, K. Okada, L. Ding, A. Veicht, E. Tennant, Xiong Wang, K. Karatsu, A. Durum, S. Dairaku, X. Jiang, M. J. Leitch, D. Roach, K. M. Kijima, Hiromi Iinuma, Dong Jo Kim, C. Gal, Julia Velkovska, Y. Hori, Anne Marie Sickles, S. Sawada, J. Ying, A. Franz, S. Yokkaichi, K. Gainey, Senta Greene, I. E. Yushmanov, K. Hashimoto, J. S. Bok, D. Kotchetkov, B. Fadem, E. O'Brien, C. Y. Chi, M. Virius, E. T. Atomssa, K. N. Barish, Y. Komatsu, B. Komkov, A. Sukhanov, K. Kurita, Charles Maguire, Norio Saito, C. H. Chen, M. Stepanov, H. Pereira, Tsutomu Mibe, M. A. L. Leite, Jan Rak, R. Lacey, J. H. Kang, S. H. Lim, R. Granier de Cassagnac, C. O. Kim, A. Adare, S. Choi, A. Manion, R. Belmont, S. D. Rolnick, R. Pak, J. S. Haggerty, S. R. Lee, J. S. Kapustinsky, V. Babintsev, S. Edwards, I. Ravinovich, Kiyoshi Tanida, M. Bai, C. Nattrass, E. Kistenev, E. C. Aschenauer, M. L. Brooks, B. Love, Zhiying You, Ajit Kumar Mohanty, T. A. Shibata, C. L. Silva, J. Sun, M. Finger, Y. S. Lai, Zvi Hirsh Citron, D. Kawall, Y. Tanaka, E. Mannel, R. Seto, M. Javani, D. Isenhower, H. J. Moon, Y. Ikeda, R. Akimoto, M. Gonin, C. Pinkenburg, K. Nakano, A. Enokizono, J. Imrek, H. Asano, K. B. Kim, W. E. Sondheim, K. Boyle, T. Ichihara, S. Bathe, M. Chiu, C. A. Ogilvie, T. K. Hemmick, J. M. Durham, Yasuo Miake, Takahiro Fusayasu, M. Issah, S. Wolin, Byoungchoo Park, A. Drees, D. Kotov, D. S. Jumper, Jason Kamin, D. Silvermyr, S. P. Stoll, D. Jouan, A. Yanovich, M. Soumya, B. Meredith, J. T. Mitchell, A. Ster, John Hill, R. Seidl, Vladislav Manko, G. Roche, Toru Sugitate, M. Slunečka, C. Vale, François Fleuret, A. Taranenko, Y. Nakamiya, T. Horaguchi, Brajesh K. Singh, Y. Tsuchimoto, S. Tarafdar, B. Sahlmueller, Eva Haslum, Y. J. Kim, A. Dion, M. I. Nagy, Kensuke Homma, E. Richardson, Beomkyu Kim, B. Bassalleck, I. J. Choi, A. Kiss, Henner Buesching, S. Butsyk, K. Watanabe, X. Gong, K. Shoji, L. A. Linden Levy, P. W. Stankus, A. Garishvili, Agneta Oskarsson, Y. Berdnikov, S. H. Lee, Y. Akiba, C. McKinney, S. Nagamiya, Vaclav Vrba, Rui Wei, Hideki Hamagaki, K. Aoki, K. O. Eyser, M. Vargyas, G. David, K. I. Hahn, Y. L. Yamaguchi, T. Kempel, H. W. Van Hecke, and S. Kaneti
Subjects: Quark, Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics::Phenomenology, Elliptic flow, Hadron, Electron, Nuclear physics, Thermalisation, Positron, Pion, High Energy Physics::Experiment, Nuclear Experiment, Beam energy
Abstract: We present measurements of electrons and positrons from the semileptonic decays of heavy-flavor hadrons at midrapidity (|y|< 0.35) in Au+Au collisions at sNN−−−−√=62.4 GeV. The data were collected in 2010 by the PHENIX experiment that included the new hadron-blind detector. The invariant yield of electrons from heavy-flavor decays is measured as a function of transverse momentum in the range 1
Published: 2015

9. Search for dark photons from neutral meson decays inp+pandd+Aucollisions atsNN=200 GeV

Author: S. Dairaku, P. Rosnet, K. O. Eyser, A. K. Purwar, K. Fujiwara, O. Zaudtke, K. Watanabe, Takafumi Niida, J. Huang, K. Shoji, Marisilvia Donadelli, V. Bumazhnov, D. Black, M. Virius, E. T. Atomssa, J. S. Yoo, Ajit Kumar Mohanty, M. K. Dayananda, T. A. Shibata, C. L. Silva, Min Soo Kim, V. S. Pantuev, P. W. Stankus, Prakhar Garg, T. Sato, B. Bannier, S. Mizuno, Tadaaki Isobe, A. Sen, R. Tanabe, D. Layton, J. D. Orjuela Koop, C. H. Chen, H. Pei, S. Campbell, P. L. McGaughey, A. Manion, N. S. Bandara, S. Afanasiev, Charles Maguire, I. Tserruya, M. Jezghani, Yu. Efremenko, Kiyoshi Tanida, C. Nattrass, E. Kistenev, Y. Imazu, M. Chiu, P. Lichtenwalner, S. Beckman, J. Sun, M. Ouchida, H. W. Van Hecke, Y. Miyachi, A. Ster, N. Feege, G. Roche, D. Watanabe, M. D. Malik, E. Vznuzdaev, Y. J. Mao, W. C. Chang, D. Isenhower, A. Toia, T. Moon, L. Mašek, H. J. Kim, V. Singh, T. Murakami, Yi Gu, S. Hasegawa, K. S. Sim, K. Okada, Maya Hachiya Shimomura, R. S. Hollis, Y. I. Makdisi, N. Means, K. Kurita, J. Asai, M. Naglis, L. Ding, M. Kofarago, J. S. Haggerty, S. R. Lee, Rushan Han, Y. Tanaka, E. Mannel, Nagahiro Saito, B. Meredith, I. Ravinovich, H. J. Moon, L. Baksay, T. Koblesky, K. R. Andrews, R. A. Soltz, H. Borel, Y. Miake, H. Qu, A. Kiss, V. Dzhordzhadze, A. Hadj Henni, J. Bryslawskyj, C. Baumann, S. Kametani, S. Sawada, J. Ying, A. Franz, Henner Buesching, Steve Edwards, R. Yang, Masamichi Ishihara, Beomkyu Kim, Minghui Liu, M. Heffner, Wei Xie, Kenneth Francis Read, T. Ichihara, C. Harper, Shingo Sakai, D. J. Kim, H. Nakagomi, T. Hoshino, D. Roach, K. M. Kijima, Y. Fukao, B. Komkov, K. Utsunomiya, Hideki Hamagaki, K. Aoki, M. Bai, E. C. Aschenauer, M. Grosse Perdekamp, F. Giordano, M. E. Connors, M. S. Daugherity, C. P. Singh, H. En'yo, M. J. Leitch, A. Glenn, S. Taneja, X. Gong, Marcus Hohlmann, A. V. Kazantsev, G. David, Sung Keun Park, K. I. Hahn, K. Hashimoto, Tae-Yeon Lee, M. J. Tannenbaum, Vladimir Samsonov, I. J. Choi, B. Xia, S. K. Park, K. N. Barish, C. M. Camacho, R. S. Towell, B. M. Johnson, Prashant Shukla, Xingguo Li, J. L. Charvet, Dennis Perepelitsa, S. F. Pate, K. Imai, Tsutomu Mibe, L. Tomášek, T. Todoroki, Eunja Kim, L. A. Linden Levy, P. Mikeš, M. Towell, Atsushi Takahara, Soren Pontoppidan Sorensen, M. A. L. Leite, C. L. Woody, J. H. Do, Anders Nils Erik Oskarsson, A. Kim, A. Taranenko, Ke. Nakamura, A. Berdnikov, R. J. Petti, O. Drapier, A. Isupov, Inseok Yoon, Kazushi Miki, Zhiying You, R. Bennett, M. Kawashima, D. Sharma, B. K. Schmoll, H. Al-Bataineh, R. Armendariz, J. A. Key, K. Karatsu, L. Patel, K. A. Drees, Youngil Kwon, H. H. Shim, S. Bathe, Terry C Awes, L. Aphecetche, Christophe Pierre Suire, Alexander Milov, I. Nakagawa, D. Mukhopadhyay, E. Tennant, S. Rembeczki, P. Montuenga, Martin Purschke, N. N. Ajitanand, M. Vargyas, A. Caringi, H. Ozaki, Y. S. Lai, Young-Ki Kim, T. Hester, David Olle Rickard Silvermyr, J. Sziklai, S. H. Lim, S. J. Jeon, T. Horaguchi, Brajesh K. Singh, J. Ben-Benjamin, M. Finger, S. Motschwiller, Kyoichiro Ozawa, T. Liška, Yorito Yamaguchi, T. Engelmore, N. Novitzky, F. Staley, A. Dion, M. I. Nagy, Y. Berdnikov, Frank Ellinghaus, S. H. Lee, Y. Akiba, O. Chvala, H. Themann, Ju Hwan Kang, T. Jones, Petr Gallus, Jun Kikuchi, A. Yu. Semenov, J. L. Nagle, D. John, P. Castera, J. Gosset, Peter Christiansen, S. Sano, G. D. N. Perera, R. Belmont, Brian Cole, J. S. Kapustinsky, Y. Hori, Anne Marie Sickles, E. Joo, D. Ivanishchev, T. Sodre, Jongmin Lee, Seong H. Kim, V. Papavassiliou, Takahiro Nakamura, Johannes Peter Wessels, B. Schaefer, J. Klatsky, P. Chung, J. Imrek, T. Kempel, E. R. Kinney, Alice Mignerey, L. D'Orazio, D. P. Morrison, C. A. Ogilvie, V. Babintsev, D. Winter, S. Kaneti, T. K. Hemmick, S. Miyasaka, C. McKinney, J. M. Durham, M. Mishra, S. Nagamiya, J. Murata, I. V. Sourikova, D. McGlinchey, D. Yu Peressounko, P. Tarján, Vaclav Vrba, Klaus Johannes Reygers, I. Garishvili, F. Wei, X. Jiang, Hari Guragain, J. G. Lajoie, Pawan Kumar Netrakanti, J. S. Bok, D. Broxmeyer, A. Enokizono, Susumu Sato, B. H. Kang, V. E. Semenov, M. Alfred, T. Hachiya, S. Whitaker, Susumu Oda, Gerd Joachim Kunde, T. L. Thomas, Takao Sakaguchi, S. Tarafdar, H. Asano, Jennifer E. Perry, K. Das, I. Shein, E. P. Hartouni, C. Klein-Boesing, H. Al-Ta'Ani, Tatsuya Chujo, A. Kravitz, Jen-Chieh Peng, Rui Wei, A. Durum, Ryugo S. Hayano, A. Morreale, K. DeBlasio, L. Kochenda, M. Issah, Y. Riabov, T. Sumita, C. Y. Chi, Taku Gunji, H. Gong, J. Seele, Z. Fraenkel, G. R. Young, K. Sedgwick, M. Patel, F. Kajihara, A. D. Frawley, V. L. Rykov, T. Dahms, J. G. Rubin, Catherine Micaela Silvestre, Mihael Makek, D. Reynolds, A. Deshpande, Kenta Shigaki, S. Yokkaichi, V-N. Tram, N. Grau, K. Yamaura, M. Nguyen, A. Meles, R. Pinson, M. Leitgab, V. Khachatryan, M. Kurosawa, Hiroyuki Sako, Eva Haslum, B. Lenzi, A. J. Miller, S. Butsyk, S. Huang, A. Sukhanov, Inkyu Park, R. K. Choudhury, E. Stenlund, B. Azmoun, Senta Greene, Rachid Nouicer, A. N. Zelenski, M. Proissl, Motoi Inaba, Y. Onuki, S. W. Nam, M. Tomášek, G. S. Kyle, S. Zhou, W. Holzmann, H. Pereira, Xiong Wang, Z. Conesa del Valle, A. Král, M. J. Kweon, Y. Morino, Hongfang Liu, Y. Ikeda, Y. Watanabe, A. T. Basye, J. G. Boissevain, D. E. Fields, R. M. Wright, S. Wolin, M. Sarsour, Mate Csanad, A. Iordanova, James Alexander, J. S. Kang, Jan Rak, M. Savastio, A. Baldisseri, R. Averbeck, R. Lacey, S. D. Rolnick, B. V. Jacak, C. O. Kim, I. Younus, R. Akimoto, B. Fadem, E. O'Brien, S. Y. Han, R. Granier de Cassagnac, Byung-Sik Hong, A. Bazilevsky, M. Oka, N. Kamihara, J. Jin, A. Adare, M. Gonin, C. Pinkenburg, M. McCumber, R. Pak, A. Soldatov, M. Wysocki, P. Kline, K. S. Lee, E. M. Takagui, M. Nihashi, K. Dehmelt, Alexandre Lebedev, D. M. Lee, N. Riveli, X. He, M. Stepanov, K. B. Lee, Atsushi Taketani, P. Liebing, M. Beaumier, Byoungchoo Park, K. S. Joo, A. Rakotozafindrabe, N. Apadula, C. Oakley, A. Drees, David D'Enterria, A. Datta, J. Hanks, K. Kiriluk, R. P. Pisani, A. Vossen, R. Ichimiya, K. Sakashita, D. Kotov, D. S. Jumper, Y. Aramaki, J. Hamblen, Jason Kamin, V. Peresedov, S. P. Stoll, Robert Vertesi, S. S.E. Rosendahl, G. Bunce, A. Churyn, D. Jouan, J. Koster, S. Batsouli, H. Masui, A. K. Dubey, A. A. Bickley, A. Veicht, A. Mwai, B. Love, A. G. Litvinenko, A. Sexton, D. Kawall, A. Kozlov, R. Seto, K. Haruna, I. Danchev, O. Dietzsch, H. Valle, Dipanwita Dutta, C. Gal, Julia Velkovska, M. Rosati, Tamás Csörgő, A. A. Vinogradov, Jiangyong Jia, Y. Goto, D. Kleinjan, Eric Appelt, Takahiro Fusayasu, Alexander Malakhov, K. Kihara, ShinIchi Esumi, L. S. Zolin, W. J. Park, Christopher Rosen, P. D. Barnes, A. Yanovich, D. Hornback, John Hill, H. A. Torii, Toru Sugitate, François Fleuret, Z. Rowan, M. Mendoza, M. L. Brooks, S. N. White, Deepa Thomas, Zvi Hirsh Citron, H. Ge, K. Nakano, W. E. Sondheim, D. Ivanischev, K. Boyle, P. A. Rukoyatkin, J. T. Mitchell, R. Seidl, Vladislav Manko, M. Slunečka, L. Guo, Alexei Khanzadeev, S. Belikov, J. B. Choi, C. Vale, Dipak Kumar Mishra, D. H. Kim, B. S. Chang, A. Timilsina, Christine Angela Aidala, J. Klay, Alexander Nyanin, Y. Nakamiya, D. Lynch, G. Baksay, J. H. Bhom, T. V. Moukhanova, B. Sahlmueller, Y. J. Kim, F. Matathias, Kensuke Homma, E. Richardson, P. Constantin, S. Chernichenko, B. Bassalleck, M. Konno, Jason Newby, J. E. Frantz, Dmitry Blau, E. J. Desmond, M. Togawa, E. Vazquez-Zambrano, J. Park, M. Kasai, Y. Tsuchimoto, Y. Iwanaga, I. E. Yushmanov, Eun-Hee Kim, H. A. Gustafsson, C. Zhang, P. Ružička, Viktor Riabov, Gary Grim, K. V. Dharmawardane, H. Iinuma, A. P.T. Palounek, Serpil Yalcin, Aaron Angerami, W. A. Zajc, L. Xue, V. Baublis, A. Denisov, Yuki Watanabe, V. Cianciolo, Y. Tomita, Sergey Fokin, and P. Sett
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Gauge boson, Muon, Anomalous magnetic dipole moment, Meson, 010308 nuclear & particles physics, Dalitz plot, 01 natural sciences, 7. Clean energy, Dark photon, Standard Model, Nuclear physics, 0103 physical sciences, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: The standard model (SM) of particle physics is spectacularly successful, yet the measured value of the muon anomalous magnetic moment (g−2)μ deviates from SM calculations by 3.6σ. Several theoretical models attribute this to the existence of a “dark photon,” an additional U(1) gauge boson, which is weakly coupled to ordinary photons. The PHENIX experiment at the Relativistic Heavy Ion Collider has searched for a dark photon, U, in π0,η→γe+e− decays and obtained upper limits of O(2×10−6) on U−γ mixing at 90% C.L. for the mass range 30
Published: 2015

10. Measurement ofΥ(1S+2S+3S)production inp+pand Au + Au collisions atsNN=200GeV

Author: V. S. Pantuev, M. Sano, H. Pei, Sung Keun Park, K. Okada, N. N. Ajitanand, H. J. Kim, H. En'yo, M. J. Leitch, L. Aphecetche, Takahiro Nakamura, A. Dion, S. Baumgart, Masamichi Ishihara, Johannes Peter Wessels, M. Sarsour, Mate Csanad, A. Iordanova, D. McGlinchey, M. I. Nagy, Takafumi Niida, D. Watanabe, Bum-Hoon Lee, Minghui Liu, A. Durum, Marisilvia Donadelli, V. Bumazhnov, J. L. Charvet, M. D. Malik, E. Vznuzdaev, M. Heffner, A. Yu. Semenov, Catherine Micaela Silvestre, A. Sukhanov, K. Kurita, H. Pereira, R. A. Soltz, H. Borel, K. V. Dharmawardane, B. Azmoun, A. Král, M. J. Kweon, K. Yamaura, Kenneth Francis Read, T. Ichihara, A. Hadj Henni, J. Gosset, K. Watanabe, M. Grosse Perdekamp, H. Liu, R. Tanabe, D. Layton, Y. Hori, Beomkyu Kim, C. O. Kim, M. Wysocki, K. Shoji, B. Bannier, Wei Xie, X. Jiang, M. E. Connors, K. A. Drees, A. Enokizono, R. Pak, K. B. Lee, P. Chung, Y. Miyachi, M. Oka, W. C. Chang, I. J. Choi, D. E. Fields, B. V. Jacak, J. Imrek, P. Kline, K. S. Lee, Maya Hachiya Shimomura, R. S. Hollis, H. Iinuma, P. W. Stankus, K. Sakashita, M. Nihashi, L. Ding, Rushan Han, Peter Christiansen, J. S. Kang, J. Klatsky, A. Datta, H. Asano, D. Roach, M. McCumber, Dmitry Blau, K. M. Kijima, T. Murakami, A. P.T. Palounek, H. Gong, J. Seele, D. Winter, D. Yu Peressounko, P. Liebing, Vladimir Samsonov, Christine Nattrass, N. Riveli, T. Todoroki, K. S. Joo, K. Hashimoto, P. L. McGaughey, J. Hanks, Charles Maguire, P. Tarján, Xingguo Li, S. Choi, Aaron Angerami, K. Das, E. P. Hartouni, David D'Enterria, S. Butsyk, K. O. Eyser, S. P. Sorensen, N. Apadula, M. Chiu, W. A. Zajc, O. Dietzsch, D. Kotov, A. K. Purwar, Kiyoshi Tanida, K. Fujiwara, X. Bing, O. Chvala, Tamas Ferenc Csorgo, H. Qu, H. Valle, Seong H. Kim, V. Baublis, S. Sawada, A. Denisov, V. Cianciolo, E. Kistenev, Y. Tomita, Tomofumi Nagae, J. L. Nagle, Dipanwita Dutta, P. Castera, S. Yokkaichi, J. Ying, A. Franz, S. Zhou, A. Baldisseri, S. D. Rolnick, Y. I. Makdisi, A. Vossen, R. P. Pisani, S. Esumi, A. V. Kazantsev, K. Aoki, M. Vargyas, Y. L. Yamaguchi, C. Gal, E. J. Desmond, G. David, Sergey Fokin, Julia Velkovska, K. I. Hahn, F. Kajihara, D. Sharma, Senta Greene, A. T. Basye, R. Ichimiya, D. S. Jumper, Tae-Yeon Lee, B. Komkov, Martin Purschke, Ajit Kumar Mohanty, C. A. Aidala, F. Fleuret, Norio Saito, Tsutomu Mibe, B. Fadem, E. O'Brien, C. M. Camacho, Prashant Shukla, M. Rosati, K. Ozawa, T. A. Shibata, C. L. Silva, T. Sato, S. F. Pate, A. Morreale, Z. Fraenkel, M. A. L. Leite, L. Tomášek, Ke. Nakamura, H. Al-Bataineh, Jason Kamin, M. Togawa, E. Vazquez-Zambrano, A. A. Vinogradov, R. K. Choudhury, Y. J. Mao, J. Sun, D. Isenhower, A. Toia, S. H. Lim, J. H. Kang, T. Kempel, S. Motschwiller, Dong-Hun Kim, D. Ivanishchev, H. A. Gustafsson, S. Kaneti, L. Mašek, R. Belmont, V. Papavassiliou, J. S. Kapustinsky, Jiangyong Jia, S. P. Stoll, Y. Fukao, V. Babintsev, S. Edwards, A. Nederlof, J. Park, Y. Goto, M. Tomášek, C. Zhang, G. S. Kyle, T. Hester, J. S. Haggerty, S. R. Lee, P. Ružička, James Alexander, R. Averbeck, Byung-Sik Hong, D. Kleinjan, Y. Komatsu, A. Bazilevsky, Philippe Rosnet, Viktor Riabov, L. Patel, Alexandre Lebedev, T. C. Awes, T. Liška, D. M. Lee, A. Rakotozafindrabe, K. Kiriluk, V-N. Tram, N. Grau, Y. S. Lai, H. W. Van Hecke, M. Kasai, S. S.E. Rosendahl, Jun Kikuchi, G. Bunce, Y. Ikeda, M. Leitgab, J. G. Boissevain, M. J. Tannenbaum, M. Gonin, Motoi Inaba, Y. Tanaka, E. Mannel, C. Pinkenburg, H. Torii, G. Roche, A. Churyn, D. Jouan, S. Bathe, M. Javani, Y. Aramaki, Agneta Oskarsson, I. E. Yushmanov, Eun-Hee Kim, Y. Berdnikov, L. Guo, Alexei Khanzadeev, S. H. Lee, Y. Akiba, E. Stenlund, S. Wolin, C. McKinney, M. Mishra, S. Nagamiya, S. X. Oda, N. Kamihara, Vaclav Vrba, Klaus Johannes Reygers, D. Mukhopadhyay, E. Tennant, S. Rembeczki, Rui Wei, J. B. Choi, Dipak Kumar Mishra, H. J. Moon, A. Kiss, L. Baksay, A. Deshpande, Byoungchoo Park, Henner Buesching, M. Kurosawa, A. Drees, Alice Mignerey, T. V. Moukhanova, Y. S. Watanabe, L. D'Orazio, S. Miyasaka, F. Matathias, R. Vértesi, X. Gong, Kensuke Homma, E. Richardson, B. Lewis, Marcus Hohlmann, P. Constantin, S. Chernichenko, B. Bassalleck, Jongmin Lee, M. Konno, Takao Sakaguchi, L. A. Linden Levy, R. Akimoto, P. Mikeš, C. A. Ogilvie, S. Masumoto, J. T. Mitchell, J. E. Frantz, R. Seidl, T. K. Hemmick, Vladislav Manko, J. M. Durham, C. Klein-Boesing, Yasuo Miake, J. Jin, A. Taketani, M. Slunečka, Y. Watanabe, E. M. Takagui, A. D. Frawley, T. Gunji, L. Kochenda, M. Issah, C. Baumann, S. Kametani, A. Takahara, V. L. Rykov, T. Dahms, M. S. Daugherity, C. P. Singh, S. Belikov, S. Huang, T. Isobe, B. M. Johnson, S. Dairaku, Filip Krizek, W. Holzmann, C. L. Woody, A. Berdnikov, O. Zaudtke, R. J. Petti, X. He, V. Peresedov, A. Isupov, C. Suire, I. Younus, J. Koster, C. Vale, S. Batsouli, J. Sziklai, H. Masui, M. Virius, E. T. Atomssa, A. K. Dubey, B. S. Chang, A. A. Bickley, A. Veicht, K. N. Barish, Brian Cole, R. S. Towell, J. Klay, C. H. Chen, A. Manion, I. Ravinovich, Y. Nakamiya, D. Lynch, I. Garishvili, M. Bai, G. Baksay, E. C. Aschenauer, F. Wei, Zhiying You, R. Bennett, A. Soldatov, R. Hayano, M. Finger, A. Garishvili, M. L. Brooks, B. Sahlmueller, B. Love, I. V. Sourikova, Y. J. Kim, T. L. Thomas, I. Tserruya, Yu. Efremenko, V. Singh, H. Hamagaki, C. Y. Chi, A. Glenn, A. G. Litvinenko, Eunja Kim, Takahiro Fusayasu, Alexander Milov, I. Nakagawa, Young-Ki Kim, T. Engelmore, N. Novitzky, Alexander Malakhov, M. Naglis, Frank Ellinghaus, D. Silvermyr, K. Karatsu, E. R. Kinney, D. P. Morrison, L. S. Zolin, S. Campbell, B. H. Kang, W. J. Park, A. Kozlov, Y. Riabov, V. E. Semenov, Anne Marie Sickles, P. D. Barnes, A. Yanovich, R. Seto, K. Haruna, H. Al-Ta'Ani, Tatsuya Chujo, Kenta Shigaki, Jen-Chieh Peng, M. Nguyen, M. Soumya, K. Gainey, D. Reynolds, Inkyu Park, Xiong Wang, B. Meredith, Dong Jo Kim, John Hill, J. S. Bok, D. Kotchetkov, A. S. Nyanin, Toru Sugitate, Y. Morino, Rachid Nouicer, A. N. Zelenski, M. Proissl, F. Staley, G. R. Young, D. Kawall, H. Themann, M. Mendoza, S. N. White, T. Tsuji, Zvi Hirsh Citron, Y. Onuki, K. Nakano, J. Murata, K. B. Kim, W. E. Sondheim, D. Ivanischev, Jan Rak, Gerd Joachim Kunde, K. Boyle, P. A. Rukoyatkin, I. Shein, R. Lacey, J. G. Lajoie, T. Hachiya, S. Whitaker, S. Afanasiev, A. Ster, A. Kravitz, R. Granier de Cassagnac, K. Sedgwick, J. Newby, M. Ouchida, Mihael Makek, A. Adare, N. Means, J. Asai, D. Hornback, Shingo Sakai, A. Taranenko, Kazushi Miki, T. Horaguchi, Brajesh K. Singh, K. S. Sim, V. Dzhordzhadze, M. Stepanov, Y. Kwon, R. Yang, S. Tarafdar, S. Taneja, Y. Tsuchimoto, K. Imai, Eva Haslum, B. Lenzi, O. Drapier, and A. Sen
Subjects: Scattering cross-section, Physics, Nuclear and High Energy Physics, Large Hadron Collider, 010308 nuclear & particles physics, Modification factor, 01 natural sciences, Luminosity, Nuclear physics, Yield (chemistry), 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: Measurements of bottomonium production in heavy-ion and p + p collisions at the Relativistic Heavy Ion Collider (RHIC) are presented. The inclusive yield of the three states, (1S + 2S + 3S), was measured in the PHENIX experiment via electron-positron decay pairs at midrapidity for Au + Au and p + p collisions at root sNN = 200 GeV. The (1S + 2S + 3S) -> e(+)e(-) differential cross section at midrapidity was found to be B(ee)d sigma/dy = 108 +/- 38 (stat) +/- 15 (syst) +/- 11 (luminosity) pb in p + p collisions. The nuclear modification factor in the 30% most central Au + Au collisions indicates a suppression of the total. state yield relative to the extrapolation from p + p collision data. The suppression is consistent with measurements made by STAR at RHIC and at higher energies by the CMS experiment at the Large Hadron Collider.
Published: 2015

11. Charged-pion cross sections and double-helicity asymmetries in polarizedp+pcollisions ats=200 GeV

Author: D. Roach, K. M. Kijima, K. Hashimoto, Xingguo Li, S. Kaneti, S. P. Sorensen, O. Chvala, J. G. Lajoie, A. Sukhanov, K. Kurita, H. Pereira, Y. Nakamiya, D. Lynch, R. Pak, M. Tomášek, Vladimir Samsonov, M. Rosati, Tamás Csörgő, G. S. Kyle, F. Fleuret, Prashant Shukla, Alice Mignerey, James Alexander, D. Hornback, B. Meredith, S. F. Pate, C. L. Woody, Mate Csanad, J. Newby, Atsushi Takahara, Byung-Sik Hong, B. Love, A. Bazilevsky, Ke. Nakamura, K. A. Drees, Martin Purschke, C. A. Aidala, H. A. Torii, L. D'Orazio, T. W. Jones, R. Armendariz, Aaron Angerami, Yuhei Morino, Jiangyong Jia, Y. Tanaka, Toru Sugitate, A. Kiss, Hongfang Liu, D. E. Fields, Jan Rak, Y. Goto, J. L. Nagle, D. John, P. Castera, R. Lacey, D. Broxmeyer, D. M. Lee, Masamichi Ishihara, W. A. Zajc, E. Mannel, Henner Buesching, M. Nihashi, M. McCumber, Minghui Liu, S. Motschwiller, Beomkyu Kim, R. Granier de Cassagnac, A. Adare, V. Baublis, I. V. Sourikova, Hiromi Iinuma, D. Kleinjan, V. Papavassiliou, Charles Maguire, C. Silvestre, A. Denisov, Yuki Watanabe, Eric Appelt, V. Cianciolo, X. Gong, Kenneth Francis Read, B. Komkov, Senta Greene, Takao Sakaguchi, T. Ichihara, R. K. Choudhury, R. Seto, K. S. Joo, R. S. Hollis, R. P. Pisani, H. J. Moon, N. N. Ajitanand, A. V. Kazantsev, L. A. Linden Levy, J. G. Rubin, A. T. Basye, Marisilvia Donadelli, V. Bumazhnov, Norio Saito, Sergey Fokin, N. Apadula, Tsutomu Mibe, X. He, M. A. L. Leite, A. Taranenko, L. Tomášek, Takahiro Nakamura, Agneta Oskarsson, Takahiro Fusayasu, H. H. Shim, Y. Aramaki, M. Ouchida, A. Vossen, R. Petti, A. D. Frawley, Robert Vertesi, T. Horaguchi, B. Fadem, N. Means, E. O'Brien, I. J. Choi, O. Dietzsch, Y. Fukao, S. Esumi, S. H. Lim, J. Koster, S. H. Lee, Y. Akiba, J. S. Yoo, C. McKinney, K. R. Andrews, A. Durum, L. Patel, R. Tanabe, Kenjiro Miki, S. Nagamiya, D. Sharma, R. Ichimiya, M. K. Dayananda, D. Silvermyr, T. Hester, E. Kistenev, Kensuke Homma, E. Richardson, C. Harper, R. Belmont, J. S. Kapustinsky, M. Grosse Perdekamp, H. Masui, M. Wysocki, B. Bannier, B. Azmoun, Y. J. Mao, V. Babintsev, F. Giordano, A. Král, J. Sun, T. C. Awes, Kyoichiro Ozawa, Vaclav Vrba, Klaus Johannes Reygers, Astrid Morreale, C. Gal, X. Jiang, Julia Velkovska, K. S. Sim, Barbara Jacak, T. Murakami, E. M. Takagui, Rui Wei, J. S. Bok, A. Yanovich, K. N. Barish, M. E. Connors, S. K. Park, Rushan Han, H. Pei, S. Tarafdar, H. A. Gustafsson, A. Datta, B. Bassalleck, Ryugo S. Hayano, M. Mendoza, P. Kline, R. Yang, K. S. Lee, S. Sano, S. N. White, Deepa Thomas, Y. Riabov, N. Grau, Kenta Shigaki, M. Konno, Eva Haslum, W. Holzmann, M. Nguyen, Y. L. Yamaguchi, M. Slunečka, P. L. McGaughey, O. Drapier, Maya Hachiya Shimomura, M. L. Brooks, Zvi Hirsh Citron, A. S. Nyanin, K. Imai, J. T. Mitchell, Motoi Inaba, J. C. Hill, K. Nakano, R. M. Wright, M. I. Nagy, M. Proissl, Rachid Nouicer, A. N. Zelenski, S. Taneja, R. Seidl, D. Winter, D. Yu Peressounko, Y. I. Makdisi, Viktor Riabov, D. Watanabe, K. Karatsu, Vladislav Manko, W. E. Sondheim, D. Ivanischev, J. Ben-Benjamin, S. Sawada, Y. Hori, Anne Marie Sickles, H. Themann, K. V. Dharmawardane, E. Vznuzdaev, J. Ying, A. Franz, K. Boyle, S. Dairaku, C. Vale, G. R. Young, M. J. Tannenbaum, M. Virius, E. T. Atomssa, E. Tennant, A. Dion, Manabu Togawa, Johannes Peter Wessels, C. H. Chen, A. Manion, T. Sodre, Jongmin Lee, A. Taketani, Makoto Oka, Byoungchoo Park, C. Oakley, A. Drees, Jen-Chieh Peng, J. E. Frantz, S. Bathe, Inkyu Park, M. Chiu, C. A. Ogilvie, Xiong Wang, T. K. Hemmick, Bhawani Singh, Z. Conesa del Valle, J. M. Durham, Yasuo Miake, Dong Jo Kim, L. Kochenda, M. Issah, Don McGlinchey, D. Kotov, Jason Kamin, S. P. Stoll, S. S.E. Rosendahl, G. Bunce, A. Veicht, D. Jouan, I. Tserruya, Yu. Efremenko, V. Singh, L. Guo, Alexei Khanzadeev, E. Stenlund, M. Sarsour, C. Baumann, Y. J. Kwon, A. Glenn, S. Huang, J. B. Choi, T. V. Moukhanova, Dmitry Blau, E. J. Desmond, J. Hanks, E. Vazquez-Zambrano, J. S. Kang, M. Kasai, Y. Tsuchimoto, Y. Iwanaga, I. E. Yushmanov, Eunja Kim, Alexander Milov, I. Nakagawa, Young-Ki Kim, T. Engelmore, C. P. Singh, V. S. Pantuev, B. M. Johnson, J. Hamblen, E. R. Kinney, D. P. Morrison, S. Campbell, B. H. Kang, K. Okada, H. Al-Ta'Ani, Tatsuya Chujo, B. Sahlmueller, H. En'yo, M. J. Leitch, A. Iordanova, J. Murata, K. Watanabe, K. Shoji, Yongsun Kim, P. W. Stankus, H. Qu, Hideki Hamagaki, K. Aoki, G. David, K. I. Hahn, J. Sziklai, Peter Christiansen, T. Kempel, Brian Cole, R. S. Towell, H. Van Hecke, I. Garishvili, Y. Ikeda, F. Wei, M. Gonin, R. Akimoto, C. Pinkenburg, G. Roche, C. Y. Chi, M. Kurosawa, A. Lebedev, M. Savastio, S. Yokkaichi, D. Kawall, K. Tanida, J. H. Kang, Y. Miyachi, J. S. Haggerty, S. R. Lee, K. Utsunomiya, Gerd Joachim Kunde, I. Shein, Y. S. Lai, K. Sedgwick, A. Deshpande, Y. Watanabe, I. Younus, R. A. Soltz, M. Naglis, A. Enokizono, C. L. Silva, Taku Gunji, S. Butsyk, S. Zhou, S. D. Rolnick, Ajit Kumar Mohanty, T. A. Shibata, T. Sato, D. Isenhower, I. Ravinovich, M. Bai, E. C. Aschenauer, Zhiying You, R. Bennett, M. Finger, and K. B. Lee
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Nuclear Theory, Spin structure, Deep inelastic scattering, Helicity, Inelastic neutron scattering, Nuclear physics, Pion, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Relativistic Heavy Ion Collider
Abstract: We present midrapidity charged-pion invariant cross sections, the ratio of the pi(-) to pi(+) cross sections and the charge-separated double-spin asymmetries in polarized p + p collisions at root s = p + 200 GeV. While the cross section measurements are consistent within the errors of next-to-leading-order (NLO) perturbative quantum chromodynamics predictions (pQCD), the same calculations overestimate the ratio of the charged-pion cross sections. This discrepancy arises from the cancellation of the substantial systematic errors associated with the NLO-pQCD predictions in the ratio and highlights the constraints these data will place on flavor-dependent pion fragmentation functions. The charge-separated pion asymmetries presented here sample an x range of similar to 0.03-0.16 and provide unique information on the sign of the gluon-helicity distribution.
Published: 2015

12. New measurement of BR(D+→ρ0μ+ν)BR(D+→K¯∗0μ+ν) branching ratio

Author: I. Gaines, P. H. Kasper, M. Bertani, J. N. Butler, M. Boschini, P. H. Garbincius, A. Sanchez-Hernandez, D. Y. Kim, P. M. Yager, Kyung-Suk Cho, Gianluca Alimonti, A. M. Lopez, K. B. Lee, G. Boca, Eric Wayne Vaandering, Harry Cheung, Germano Bonomi, M. H.L.S. Wang, A. Rahimi, L. A. Garren, F. Vá, J. S. Kang, A. Paris, Stefano Bianco, J. C. Anjos, M. Mezzadri, L. Agostino, J. W. Kwak, S. P. Ratti, S. Erba, B. O'Reilly, Y. Zhang, Cristina Riccardi, D. Engh, A. Kryemadhi, Daniele Pedrini, C. Cawlfield, I. Segoni, P. Inzani, E. Cuautle, Sandra Malvezzi, C. Gö, Luigi Moroni, C. M. Castromonte, James R. Wilson, P. D'Angelo, Paolo Dini, G. Liguori, W. E. Johns, F. Prelz, M. Hosack, S. Barberis, E. Casimiro, Gabriele Gianini, M. M. Merlo, A. C. dos Reis, H. Mendez, Agustín Cobos Cerutti, M. DiCorato, Michael S. Webster, Robert Gardner, C. Pontoglio, Paul Sheldon, Marco Rovere, Kevin Stenson, J. E. Moore, H. Park, R. Kutschke, John Perry Cumalat, F. L. Fabbri, Y. S. Chung, L. Cinquini, M. Sheaff, R. Mitchell, Marco A. Reyes, Iuri Muniz Pepe, A. Zallo, J. Quinones, M. S. Nehring, B. R. Ko, T. Handler, A. Massafferri, J. M. Link, Erica Polycarpo, G. Chiodini, Paolo Vitulo, S. Sala, Erik Gottschalk, Ignacio Bediaga, S. Carrillo, A. A. Machado, J. M. De Miranda, T. F. Davenport, S. Pacetti, L. Edera, J. Otalora, James E Wiss, F. Leveraro, J. Magnin, Dario Menasce, V. Arena, D. Lopes Pegna, Luigi Benussi, D. Pantea, A. E. Kreymer, C. Uribe, J. E. Ramirez, E. Luiggi, and H. Hernandez
Subjects: Physics, Nuclear and High Energy Physics, Branching fraction, Analytical chemistry, Charm (quantum number)
Abstract: Using data collected by the FOCUS experiment at Fermilab, we present a new measurement of the charm semileptonic branching ratio BR ( D + → ρ 0 μ + ν ) BR ( D + → K ¯ ∗ 0 μ + ν ) . From a sample of 320 ± 44 and 11372 ± 161 D + → ρ 0 μ + ν and D + → K − π + μ + ν events respectively, we find BR ( D + → ρ 0 μ + ν ) BR ( D + → K ¯ ∗ 0 μ + ν ) = 0.041 ± 0.006 ( stat ) ± 0.004 ( syst ) .
Published: 2006

13. Study of the decay asymmetry parameter and CP violation parameter in the Λc+→Λπ+ decay

Author: Eric Wayne Vaandering, M. Boschini, D. Y. Kim, P. H. Garbincius, Y. Zhang, J. Olatora, L. A. Garren, A. Sanchez-Hernandez, J. E. Moore, M. Sheaff, Germano Bonomi, B. O'Reilly, A. E. Kreymer, Michael S. Webster, Robert Gardner, C. Uribe, J. E. Ramirez, Stefano Bianco, Cristina Riccardi, G. Chiodini, L. Edera, V. Arena, S. Barberis, D. Lopes Pegna, Iuri Muniz Pepe, P. M. Yager, Marco Rovere, K. B. Lee, Kyung-Suk Cho, Paolo Dini, Gabriele Gianini, Luigi Benussi, M. Hosack, E. Casimiro, S. Carrillo, C. Göbel, Harry Cheung, Paolo Vitulo, James R. Wilson, Agustín Cobos Cerutti, E. Luiggi, H. Hernandez, Marco A. Reyes, J. M. De Miranda, T. F. Davenport, G. Liguori, D. Pantea, Erica Polycarpo, L. Agostino, J. Quinones, C. Cawlfield, M. Mezzadri, I. Segoni, E. Cuautle, F. Vázquez, A. Kryemadhi, S. Erba, M. DiCorato, S. Pacetti, C. M. Castromonte, P. D'Angelo, S. Sala, A. Zallo, P. H. Kasper, Erik Gottschalk, F. L. Fabbri, H. Park, C. Pontoglio, John Perry Cumalat, Paul Sheldon, A. A. Machado, Kevin Stenson, James E Wiss, F. Leveraro, H. Mendez, L. Cinquini, Gianluca Alimonti, Ignacio Bediaga, M. S. Nehring, J. Magnin, Dario Menasce, M. M. Merlo, R. Kutschke, J. M. Link, Y. S. Chung, Sandra Malvezzi, F. Prelz, W. E. Johns, J. C. Anjos, Daniele Pedrini, P. Inzani, G. Boca, J. S. Kang, J. W. Kwak, S. P. Ratti, D. Engh, B. R. Ko, M. Bertani, A. M. Lopez, R. Mitchell, A. Paris, J. N. Butler, T. Handler, A. Massafferri, M. H.L.S. Wang, A. Rahimi, I. Gaines, Luigi Moroni, and A. C. dos Reis
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Antiparticle, media_common.quotation_subject, Particle, CP violation, Fermilab, Asymmetry, media_common
Abstract: Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement of the weak decay-asymmetry parameter α Λ c in Λ c + → Λ π + decay. Comparing particle with antiparticle decays, we obtain the first measurement of the CP violation parameter A ≡ α Λ c + α Λ ¯ c α Λ c − α Λ ¯ c . We obtain α Λ c = − 0.78 ± 0.16 ± 0.19 and A = − 0.07 ± 0.19 ± 0.24 where errors are statistical and systematic.
Published: 2006

14. A non-parametric approach to the D+→K¯∗0μ+ν form factors

Author: D. Y. Kim, A. Paris, C. Pontoglio, S. Carrillo, L. Agostino, Kevin Stenson, C. Cawlfield, J. M. De Miranda, A. Kryemadhi, T. F. Davenport, Marco A. Reyes, Germano Bonomi, F. L. Fabbri, D. Engh, M. Mezzadri, D. Pantea, M. Bertani, Daniele Pedrini, J. C. Anjos, B. R. Ko, P. D'Angelo, M. DiCorato, Erik Gottschalk, H. Park, S. Sala, M. S. Nehring, Sandra Malvezzi, A. E. Kreymer, C. Uribe, J. E. Ramirez, P. Inzani, Ignacio Bediaga, J. N. Butler, A. A. Machado, Kyung-Suk Cho, James E Wiss, F. Leveraro, M. M. Merlo, Paolo Dini, F. Prelz, W. E. Johns, Gabriele Gianini, B. O'Reilly, M. Hosack, E. Casimiro, Eric Wayne Vaandering, G. Boca, Luigi Moroni, Agustín Cobos Cerutti, L. Edera, Y. Zhang, J. S. Kang, R. Kutschke, L. A. Garren, A. C. dos Reis, J. Magnin, S. Barberis, Dario Menasce, G. Chiodini, Y. S. Chung, T. Handler, J. E. Moore, James R. Wilson, J. W. Kwak, S. P. Ratti, A. Massafferri, G. Liguori, A. Zallo, I. Gaines, E. Luiggi, H. Hernandez, P. M. Yager, John Perry Cumalat, C. Göbel, Paolo Vitulo, J. Quinones, F. Vázquez, I. Segoni, V. Arena, L. Cinquini, E. Cuautle, R. Mitchell, D. Lopes Pegna, Michael S. Webster, Robert Gardner, M. Boschini, P. H. Kasper, Marco Rovere, Luigi Benussi, Erica Polycarpo, P. H. Garbincius, A. Sanchez-Hernandez, H. Mendez, J. M. Link, Paul Sheldon, M. Sheaff, Iuri Muniz Pepe, S. Erba, Gianluca Alimonti, A. M. Lopez, K. B. Lee, Harry Cheung, M. H.L.S. Wang, A. Rahimi, Stefano Bianco, and Cristina Riccardi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Form factor (quantum field theory), Nonparametric statistics, Fermilab, Helicity basis, Focus (optics), Helicity, Large sample
Abstract: Using a large sample of D + → K − π + μ + ν decays collected by the FOCUS photoproduction experiment at Fermilab, we present the first measurements of the helicity basis form factors free from the assumption of spectroscopic pole dominance. We also present the first information on the form factor that controls the s -wave interference discussed in a previous paper by the FOCUS Collaboration. We find reasonable agreement with the usual assumption of spectroscopic pole dominance and measured form factor ratios.
Published: 2006

15. Nuclear matter effects onJ/ψproduction in asymmetric Cu + Au collisions atsNN=200GeV

Author: X. He, N. N. Ajitanand, B. Meredith, G. D. N. Perera, Y. Aramaki, Takahiro Nakamura, R. A. Soltz, Robert Vertesi, B. Azmoun, D. McGlinchey, Y. Fukao, Ajit Kumar Mohanty, T. A. Shibata, A. Deshpande, M. Grosse Perdekamp, X. Bai, F. Giordano, J. Koster, T. Hester, S. K. Park, A. Durum, D. Isenhower, P. Sett, T. Moon, A. Isinhue, P. Kline, K. S. Lee, A. Dion, Peter Christiansen, Y. Watanabe, A. Veicht, A. Mwai, Maya Hachiya Shimomura, R. S. Hollis, Y. I. Makdisi, M. Leitgab, A. Ster, Dmitry Blau, N. Feege, Motoi Inaba, D. Yu Peressounko, E. J. Desmond, P. Montuenga, E. Vazquez-Zambrano, I. Younus, A. Datta, I. E. Yushmanov, Takafumi Niida, J. Huang, John Hill, H. A. Torii, Toru Sugitate, A. J. Miller, M. Beaumier, K. S. Joo, Prakhar Garg, D. Kotov, A. Sukhanov, K. Kurita, B. Lewis, Taku Gunji, M. Sarsour, Mate Csanad, A. Iordanova, Peter Steinberg, K. N. Barish, S. Y. Han, Yuichiro Sekiguchi, J. Murata, B. Bannier, S. Campbell, M. Patel, S. Esumi, M. Virius, E. T. Atomssa, J. Bryslawskyj, Vladimir Samsonov, Y. Imazu, A. Garishvili, François Fleuret, C. O. Kim, M. Nihashi, Zvi Hirsh Citron, D. S. Jumper, Jason Kamin, P. L. McGaughey, N. S. Bandara, Martin Purschke, C. A. Aidala, R. S. Towell, M. Kurosawa, Prashant Shukla, T. Todoroki, J. D. Orjuela Koop, Z. Rowan, Pawan Kumar Netrakanti, N. Crossette, M. Mendoza, C. H. Chen, M. Stepanov, D. E. Fields, M. J. Tannenbaum, Atsushi Takahara, B. V. Jacak, A. Taranenko, S. F. Pate, M. Moskowitz, I. Shein, N. Grau, S. Beckman, S. Zhou, V. Khachatryan, N. Cronin, S. P. Stoll, Ke. Nakamura, O. Drapier, A. Manion, M. R. Stone, R. P. Pisani, M. Vargyas, M. L. Brooks, K. A. Drees, Kenichi Imai, X. Bing, I. Ravinovich, S. D. Rolnick, S. J. Jeon, Senta Greene, K. Sedgwick, M. McCumber, Mihael Makek, N. Riveli, H. Ge, K. Nakano, K. B. Lee, J. A. Key, C. L. Silva, Tomofumi Nagae, J. L. Nagle, M. Bai, Hideki Hamagaki, K. Aoki, W. E. Sondheim, Brajesh K. Singh, J. G. Lajoie, M. Alfred, T. Hachiya, B. Fadem, E. O'Brien, S. Whitaker, Jennifer E. Perry, D. Ivanishchev, J. Klatsky, K. Boyle, G. David, K. I. Hahn, E. Tennant, I. J. Choi, B. Xia, V. Papavassiliou, Dennis Perepelitsa, T. Novák, T. Ichihara, D. Jouan, H. Nakagomi, T. Hoshino, Y. Gu, T. Murakami, S. Baumgart, S. Bathe, M. Chiu, Inseok Yoon, M. Towell, V. Bumazhnov, A. Sexton, D. Kawall, Zhiying You, D. Black, Hideyuki Oide, J. H. Do, K. Kihara, M. Finger, M. Skolnik, Susumu Sato, Minghui Liu, Min Soo Kim, R. Seto, L. Ding, S. Sawada, D. Silvermyr, H. Asano, Jongmin Lee, M. Kofarago, D. Roach, Alice Mignerey, A. Franz, H. J. Kim, K. Shoji, L. D'Orazio, S. Miyasaka, C. Gal, K. Watanabe, H. Ozaki, K. M. Kijima, A. Yanovich, Julia Velkovska, S. Kanda, Kenneth Francis Read, P. W. Stankus, Takao Sakaguchi, M. Rosati, Charles Maguire, A. Shaver, D. Lynch, K. Hashimoto, S. Choi, M. Soumya, A. Enokizono, Xingguo Li, Tamás Csörgő, I. Garishvili, Kiyoshi Tanida, A. D. Frawley, M. I. Nagy, C. Nattrass, P. K. Khandai, E. Kistenev, A. Taketani, A. V. Kazantsev, S. Huang, Jan Rak, R. Lacey, J. Sun, R. Granier de Cassagnac, Jiangyong Jia, Y. Goto, D. Watanabe, E. Vznuzdaev, D. Kleinjan, A. Adare, T. Sumita, C. Y. Chi, Soren Pontoppidan Sorensen, D. Sharma, M. S. Daugherity, C. P. Singh, L. Patel, B. M. Johnson, Filip Krizek, Anne Marie Sickles, R. J. Petti, K. Gainey, T. C. Awes, B. Schaefer, Kyoichiro Ozawa, J. Sziklai, J. S. Bok, D. Kotchetkov, Brian Cole, Serpil Yalcin, W. A. Zajc, L. Xue, V. Baublis, A. Denisov, Yuki Watanabe, V. Cianciolo, Sergey Fokin, Viktor Riabov, Alexei Khanzadeev, E. Stenlund, C. Baumann, J. B. Choi, Toshiki Maruyama, Dipak Kumar Mishra, D. H. Kim, T. V. Moukhanova, S. Hasegawa, Henner Buesching, S. Butsyk, Ryugo S. Hayano, X. Gong, Y. Riabov, Kenta Shigaki, A. Sen, V. S. Pantuev, A. S. Nyanin, K. Okada, Y. L. Yamaguchi, H. En'yo, M. J. Leitch, Rachid Nouicer, A. N. Zelenski, Y. J. Kwon, S. Mizuno, H. Qu, J. S. Kang, S. Yokkaichi, H. W. Van Hecke, E. Joo, S. Solano, X. Jiang, B. K. Schmoll, Hari Guragain, S. Tarafdar, Agneta Oskarsson, J. Seele, John Matthew Durham, A. Meles, J. H. Kang, Y. Berdnikov, J. S. Haggerty, S. H. Lee, Y. Akiba, C. McKinney, S. Nagamiya, J. T. Mitchell, Vaclav Vrba, J. Hanks, Hiroyuki Sako, C. A. Ogilvie, R. Seidl, T. K. Hemmick, Vladislav Manko, M. Slunečka, Yasuo Miake, Y. S. Lai, K. DeBlasio, B. Komkov, Y. Ikeda, R. Pinson, E. J. Mannel, Norio Saito, Tsutomu Mibe, R. Akimoto, C. L. Woody, A. Berdnikov, Alexander Milov, S. Wolin, R. Pak, I. Nakagawa, Young-Ki Kim, M. Gonin, T. Engelmore, N. Novitzky, C. Pinkenburg, K. Dehmelt, Petr Gallus, S. H. Lim, M. S. Ryu, N. Apadula, A. Drees, R. Belmont, J. S. Kapustinsky, I. V. Sourikova, K. O. Eyser, V. Babintsev, D. P. Morrison, M. Tomášek, B. H. Kang, James Alexander, A. Timilsina, Byung-Sik Hong, A. Bazilevsky, Tatsuya Chujo, I. Tserruya, M. Jezghani, V. Singh, Kensuke Homma, Alexandre Lebedev, E. Richardson, D. M. Lee, G. H. Lee, T. Koblesky, F. Wei, Y. Nakamiya, A. Glenn, Eunja Kim, B. Sahlmueller, Y. J. Kim, Jen-Chieh Peng, J. G. Rubin, J. E. Frantz, D. Reynolds, Inkyu Park, Xiong Wang, Dong Jo Kim, M. Wysocki, and Sung Keun Park
Subjects: Physics, Nuclear and High Energy Physics, Quantitative Biology::Neurons and Cognition, 010308 nuclear & particles physics, Nuclear Theory, Nuclear matter, 01 natural sciences, 7. Clean energy, Gluon, Nuclear physics, medicine.anatomical_structure, 0103 physical sciences, medicine, Energy density, High Energy Physics::Experiment, Angular dependence, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Relativistic Heavy Ion Collider, Nucleus
Abstract: We report on J/psi production from asymmetric Cu + Au heavy-ion collisions at root S-NN = 200 GeV at the Relativistic Heavy Ion Collider at both forward (Cu-going direction) and backward (Au-going direction) rapidities. The nuclear modification of J/psi yields in Cu + Au collisions in the Au-going direction is found to be comparable to that inAu + Au collisions when plotted as a function of the number of participating nucleons. In the Cu-going direction, J/psi production shows a stronger suppression. This difference is comparable in magnitude and has the same sign as the difference expected from shadowing effects due to stronger low-x gluon suppression in the larger Au nucleus.
Published: 2014

16. Application of genetic programming to high energy physics event selection

Author: D. Y. Kim, S. Carrillo, Erik Gottschalk, B. R. Ko, Stefano Bianco, A. A. Machado, Y. Zhang, S. Pacetti, Cristina Riccardi, I. Segoni, John Perry Cumalat, E. Cuautle, S. Barberis, L. Cinquini, A. E. Kreymer, Daniele Pedrini, C. Uribe, J. E. Ramirez, Marco A. Reyes, S. Sala, Eric Wayne Vaandering, P. H. Kasper, J. C. Anjos, P. Inzani, M. Sheaff, Erica Polycarpo, Kyung-Suk Cho, J. W. Kwak, S. P. Ratti, J. M. De Miranda, A. C. Dos Reis, S. Erba, Gabriele Gianini, L. A. Garren, D. Engh, R. Kutschke, James R. Wilson, J. Magnin, K. B. Lee, T. Handler, A. Massafferri, G. Liguori, Dario Menasce, James E Wiss, P. M. Yager, C. Cawlfield, G. Chiodini, T.F. Davenport, Iuri Muniz Pepe, L. Edera, C. M. Castromonte, J. E. Moore, E. Luiggi, H. Hernandez, Germano Bonomi, P. D'Angelo, Harry Cheung, C. Göbel, Y. S. Chung, R. Mitchell, Paolo Vitulo, G. Boca, Gianluca Alimonti, H. Mendez, A. Zallo, D. Pantea, C. Pontoglio, B. O'Reilly, Kevin Stenson, I. Bediaga, F. Vázquez, J. Quinones, M. M. Merlo, W. E. Johns, V. Arena, L. Agostino, M. Mezzadri, A. Kryemadhi, D. Lopes Pegna, Luigi Benussi, J. M. Link, Michael S. Webster, Robert Gardner, F. L. Fabbri, F. Leveraro, Marco Rovere, M. Boschini, P. H. Garbincius, M. S. Nehring, A. Sanchez-Hernandez, M. Bertani, Luigi Moroni, Sandra Malvezzi, F. Prelz, J. N. Butler, I. Gaines, Paul Sheldon, A. Paris, M. H.L.S. Wang, A. Rahimi, A. Cerutti, Paolo Dini, M. Hosack, E. Casimiro, A. M. Lopez, M. DiCorato, H. Park, and J. S. Kang
Subjects: Event selection, Physics, High Energy Physics - Experiment (hep-ex), Nuclear and High Energy Physics, Particle physics, Theoretical physics, FOS: Physical sciences, Genetic programming, Focus (optics), Instrumentation, Analysis method, High Energy Physics - Experiment
Abstract: We review genetic programming principles, their application to FOCUS data samples, and use the method to study the doubly Cabibbo suppressed decay D+ -> K+ pi+ pi- relative to its Cabibbo favored counterpart, D+ -> K- pi+ pi+. We find that this technique is able to improve upon more traditional analysis methods. To our knowledge, this is the first application of the genetic programming technique to High Energy Physics data., 39 pages
Published: 2005

17. Search for Λc+→pK+π− and Ds+→K+K+π− using genetic programming event selection

Author: M. DiCorato, H. Park, Sandra Malvezzi, F. L. Fabbri, R. Kutschke, Germano Bonomi, S. Sala, G. Boca, V. Arena, F. Prelz, Y. S. Chung, E. Luiggi, H. Hernandez, M. Boschini, P. H. Garbincius, A. Sanchez-Hernandez, D. Lopes Pegna, Luigi Benussi, M. S. Nehring, C. Cawlfield, S. Erba, Kyung-Suk Cho, P. M. Yager, A. E. Kreymer, B. O'Reilly, J. C. Anjos, C. Uribe, Ignacio Bediaga, J. E. Ramirez, Y. Zhang, J. M. Link, James E Wiss, F. Leveraro, Paolo Dini, M. Hosack, E. Casimiro, D. Y. Kim, Eric Wayne Vaandering, K. B. Lee, L. Edera, Erica Polycarpo, James R. Wilson, D. Pantea, Gianluca Alimonti, J. Magnin, John Perry Cumalat, L. Cinquini, M. M. Merlo, S. Carrillo, Dario Menasce, G. Liguori, L. A. Garren, W. E. Johns, J. Quinones, Harry Cheung, F. Vázquez, Gabriele Gianini, Daniele Pedrini, Erik Gottschalk, J. M. De Miranda, L. Agostino, M. Bertani, P. Inzani, T. F. Davenport, A. A. Machado, A. Kryemadhi, J. N. Butler, S. Barberis, I. Segoni, C. M. Castromonte, S. Pacetti, I. Gaines, P. H. Kasper, J. S. Kang, E. Cuautle, Marco A. Reyes, P. D'Angelo, Paul Sheldon, A. Zallo, Stefano Bianco, G. Chiodini, M. Mezzadri, Cristina Riccardi, C. Pontoglio, C. Göbel, Paolo Vitulo, Kevin Stenson, H. Mendez, J. E. Moore, J. W. Kwak, S. P. Ratti, D. Engh, R. Mitchell, A. M. Lopez, T. Handler, A. Massafferri, M. H.L.S. Wang, A. Rahimi, A. Cerutti, A. Paris, Luigi Moroni, A. C. dos Reis, Michael S. Webster, Robert Gardner, Marco Rovere, B. R. Ko, M. Sheaff, and Iuri Muniz Pepe
Subjects: Physics, Event selection, Nuclear and High Energy Physics, Crystallography
Abstract: We apply a genetic programming technique to search for the doubly Cabibbo suppressed decays Λ c + → p K + π − and D s + → K + K + π − . We normalize these decays to their Cabibbo favored partners and find BR ( Λ c + → p K + π − ) / BR ( Λ c + → p K − π + ) = ( 0.05 ± 0.26 ± 0.02 ) % and BR ( D s + → K + K + π − ) / BR ( D s + → K − K + π + ) = ( 0.52 ± 0.17 ± 0.11 ) % where the first errors are statistical and the second are systematic. Expressed as 90% confidence levels (CL), we find
Published: 2005

18. Search for lepton flavor violating decays τ−→ ℓ−π0,ℓ−η,ℓ−η′

Author: A.E. Bondar, H. Nakazawa, G. Gokhroo, M. Dash, B. Golob, Y. Iwasaki, Y. J. Kwon, D. Liventsev, O. Schneider, G. S. Varner, L. S. Peak, A. Ishikawa, H. Palka, L. E. Piilonen, T. Schietinger, S. E. Lee, R. Itoh, F. Fang, F. Takasaki, M. Starič, T. Sumiyoshi, Jeremy Dalseno, N. Parslow, Yuji Enari, Ilija Bizjak, Y. Chao, J. Ying, G. Leder, H. R. Khan, R. Chistov, N. Tamura, H. Shibuya, P. Schonmeier, M. H. Tanaka, Hiroyuki Sagawa, M. Watanabe, M. C. Chang, H. Hayashii, Hyunyong Kim, V.N. Zhilich, F. Mandl, S. M. Kim, C. W. Park, W. Ostrowicz, G. R. Moloney, K. Tamai, W. A. Mitaroff, U. Bitenc, Phillip Urquijo, Osamu Tajima, M. Bračko, K. Senyo, P. Krokovny, M. E. Sevior, J. B. Singh, A. Imoto, A. M. Bakich, T. Ohshima, J. H. Kang, Seema Bahinipati, Y. Choi, O. Nitoh, I. Bedny, J. Li, N. Gabyshev, N.I. Root, W. T. Chen, Z. Natkaniec, B. Shwartz, D. Epifanov, Shaji Kumar, K. Inami, N. Soni, W. S. Hou, Y. Mikami, Q. L. Xie, D. Zontar, Hiroaki Aihara, K. Sumisawa, T. J. Gershon, M. Iwasaki, Kazuo Abe, C. C. Kuo, B. G. Cheon, Y. Asano, P. Kapusta, S. Okuno, Hikaru Kawai, Rainer Stamen, Jie Zhang, S. Eidelman, J. S. Kang, V. M. Aulchenko, L. Hinz, P. Pakhlov, S. L. Olsen, X. C. Tian, Andrej Gorišek, Samo Stanič, E. Nakano, J. Haba, Heyoung Yang, L.M. Zhang, Yasushi Nagasaka, Y. Teramoto, Bruce Yabsley, M. Nakao, S. L. Blyth, S. Korpar, Jolanta Brodzicka, A. Bozek, T. Hokuue, T. Okabe, A. Kuzmin, S. R. Hou, A. Drutskoy, Y. Ushiroda, S. Uehara, S. Fratina, A. Yamaguchi, S. Nishida, S. Ogawa, N. Katayama, A. Chen, S. W. Lin, Z. P. Zhang, Masashi Hazumi, T. Uglov, H. Sakaue, T. Matsumoto, H. Ozaki, S. Villa, H. Kichimi, T. Lesiak, H. Miyake, A. Somov, R. Mizuk, C. C. Wang, K. Ueno, T. Kawasaki, T. A. Shibata, H. Miyata, Y. Hoshi, Y. Sakai, J. Schümann, K. Hayasaka, T. Iijima, C. H. Wang, Y. Yamashita, T. Nagamine, Nobuaki Sato, T. Tsukamoto, K. Hoshina, S. Uno, A. Chuvikov, and M. Yamauchi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, Pi, Flavor, Prime (order theory), Lepton
Published: 2005

19. Search for T violation in charm meson decays

Author: M. Boschini, A. Paris, Kyung-Suk Cho, P. H. Garbincius, A. Sanchez-Hernandez, S. Sala, J. M. Link, B. R. Ko, S. Barberis, M. Sheaff, M. Mezzadri, John Perry Cumalat, L. Cinquini, James E Wiss, C. Cawlfield, D. Y. Kim, J. Magnin, Erik Gottschalk, Dario Menasce, Paul Sheldon, M. H.L.S. Wang, A. Rahimi, M. M. Merlo, J. E. Moore, A. Cerutti, E. Luiggi, H. Hernandez, A. A. Machado, A. E. Kreymer, Gianluca Alimonti, Sandra Malvezzi, C. Uribe, J. E. Ramirez, R. Kutschke, I. Gaines, P. H. Kasper, Michael S. Webster, Iuri Muniz Pepe, Robert Gardner, Marco Rovere, S. Carrillo, G. Boca, F. Prelz, Eric Wayne Vaandering, M. Bertani, Y. S. Chung, D. Engh, T. F. Davenport, A. M. Lopez, L. A. Garren, Gabriele Gianini, S. Erba, C. Pontoglio, L. Agostino, K. B. Lee, G. Chiodini, S. Pacetti, Kevin Stenson, Luigi Moroni, J. N. Butler, D. Pantea, A. Kryemadhi, P. M. Yager, C. Göbel, Paolo Vitulo, F. L. Fabbri, J. W. Kwak, S. P. Ratti, J. M. De Miranda, F. Leveraro, Harry Cheung, Erica Polycarpo, M. S. Nehring, A. C. Dos Reis, James R. Wilson, L. Edera, G. Liguori, Stefano Bianco, F. Vázquez, Cristina Riccardi, A. Zallo, H. Mendez, I. Segoni, E. Cuautle, Germano Bonomi, B. O'Reilly, Y. Zhang, J. S. Kang, I. Bediaga, Daniele Pedrini, P. Inzani, J. Quinones, V. Arena, D. Lopes Pegna, C. M. Castromonte, Luigi Benussi, P. D'Angelo, M. DiCorato, H. Park, Paolo Dini, M. Hosack, E. Casimiro, J. C. Anjos, T. Handler, A. Massafferri, W. E. Johns, R. Mitchell, and Marco A. Reyes
Subjects: Physics, High Energy Physics - Experiment (hep-ex), Particle physics, Nuclear and High Energy Physics, Meson, CPT symmetry, media_common.quotation_subject, FOS: Physical sciences, Charm (quantum number), Atomic physics, Asymmetry, media_common, High Energy Physics - Experiment
Abstract: Using data from the FOCUS (E831) experiment, we have searched for T violation in charm meson decays using the four-body decay channels $D^0 \to K^-K^+\pi^-\pi^+$, $D^+ \to K^0_SK^+\pi^-\pi^+$, and $D^+_s \to K^0_SK^+\pi^-\pi^+$. The T violation asymmetry is obtained using triple-product correlations and assuming the validity of the CPT theorem. We find the asymmetry values to be $A_Tviol (D^0) = 0.010 \pm 0.057(stat.) \pm 0.037(syst.)$, $A_Tviol (D^+) = 0.023 \pm 0.062(stat.) \pm 0.022(syst.)$, and $A_Tviol (D^+_s) = -0.036 \pm 0.067(stat.) \pm 0.023(syst.)$. Each measurement is consistent with no T violation. New measurements of the CP asymmetries for some of these decay modes are also presented., Comment: 17 pages,6 figures,submitted to Phys.Lett.B
Published: 2005
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20. Study of Λc+ Cabibbo favored decays containing a Λ baryon in the final state

Author: Erik Gottschalk, Marco A. Reyes, A. A. Machado, J. M. Link, C. Pontoglio, M. Mezzadri, Paolo Dini, M. Hosack, E. Casimiro, A. Sánchez-Herńndez, Y. Zhang, Kevin Stenson, J. E. Moore, S. Carrillo, B. R. Ko, C. Cawlfield, James R. Wilson, M. Sheaff, S. Erba, G. Liguori, J. Quinones, D. Engh, S. Barberis, T. Handler, A. Massafferri, G. Boca, J. M. De Miranda, Erica Polycarpo, T. F. Davenport, F. Vázquez, F. L. Fabbri, Gianluca Alimonti, R. Mitchell, R. Kutschke, Iuri Muniz Pepe, V. Arena, Stefano Bianco, D. Pantea, Eric Wayne Vaandering, Gabriele Gianini, D. Lopes Pegna, John Perry Cumalat, Cristina Riccardi, M. S. Nehring, C. M. Castromonte, Y. S. Chung, L. Cinquini, Luigi Benussi, P. D'Angelo, K. B. Lee, P. M. Yager, S. Pacetti, Germano Bonomi, L. A. Garren, Sandra Malvezzi, H. Mendez, Harry Cheung, Paul Sheldon, L. Agostino, A. E. Kreymer, A. Zallo, J. W. Kwak, S. P. Ratti, C. Uribe, J. E. Ramirez, A. Kryemadhi, B. O'Reilly, L. Edera, I. Segoni, F. Prelz, E. Cuautle, M. M. Merlo, S. Sala, E. Luiggi, H. Hernandez, G. Chiodini, James E Wiss, F. Leveraro, Ignacio Bediaga, C. Göbel, J. S. Kang, Paolo Vitulo, J. Magnin, Dario Menasce, M. DiCorato, H. Park, A. M. Lopez, I. Gaines, P. H. Kasper, M. Bertani, J. N. Butler, Daniele Pedrini, M. H.L.S. Wang, A. Rahimi, A. Cerutti, M. Boschini, P. Inzani, P. H. Garbincius, J. C. Anjos, A. Paris, W. E. Johns, Kyung-Suk Cho, D. Y. Kim, Luigi Moroni, A. C. dos Reis, Michael S. Webster, Robert Gardner, and Marco Rovere
Subjects: Physics, Baryon, Nuclear and High Energy Physics, Crystallography, Quantum mechanics, Mass spectrum, Hyperon, Lambda
Abstract: Using data from the FOCUS experiment (FNAL–E831), we study the decay of Λ c + baryons into final states containing a Λ hyperon. The branching fractions of Λ c + into Λ π + , Λ π + π + π − and Λ K ¯ 0 K + relative to that into p K − π + are measured to be 0.217 ± 0.013 ± 0.020 , 0.508 ± 0.024 ± 0.024 and 0.142 ± 0.018 ± 0.022 , respectively. We also report new measurements of Γ ( Λ c + → Σ 0 π + ) Γ ( Λ c + → Λ π + ) = 1.09 ± 0.11 ± 0.19 , Γ ( Λ c + → Σ 0 π + π + π − ) Γ ( Λ c + → Λ π + π + π − ) = 0.26 ± 0.06 ± 0.09 and Γ ( Λ c + → Ξ ( 1690 ) 0 ( Λ K ¯ 0 ) K + ) Γ ( Λ c + → Λ K ¯ 0 K + ) = 0.32 ± 0.10 ± 0.04 . Further, an analysis of the subresonant structure for the Λ c + → Λ π + π + π − decay mode is presented.
Published: 2005

21. Time-dependent CP violation effects in partially reconstructed B0→D∗∓π± decays

Author: H. Miyata, Y. Hoshi, C. C. Wang, N. C. Hastings, K. Hayasaka, N. Kent, S. Fratina, S. Suzuki, F.J. Ronga, Z. P. Zhang, M. C. Chang, E. Nakano, M. Dash, Y. Iwasaki, Y. J. Kwon, N. Tamura, T. Matsumoto, I. Adachi, Gobinda Majumder, A. Ishikawa, A. Bay, F. Takasaki, C. W. Park, I. Bedny, J. Li, T. Tsukamoto, O. Schneider, B. Golob, S. Villa, K. Inami, A. Imoto, Y. Chao, W. Ostrowicz, D. Žontar, A. Yamaguchi, A. M. Bakich, H. Miyake, T. Ohshima, S. W. Lin, D. Liventsev, Byung Gu Cheon, S. Cole, Simon Blyth, A. Somov, K. Trabelsi, H. R. Khan, Anton Poluektov, A. Bondar, T. Iijima, M. Nakao, S. M. Kim, Jolanta Brodzicka, S. Uehara, L. S. Peak, Heyoung Yang, I. Bizjak, W. A. Mitaroff, G. S. Varner, N. Gabyshev, P. Krokovny, H. Palka, J. MacNaughton, N. Katayama, H. Hayashii, S. Bahinipati, Daniel Robert Marlow, T. Hokuue, S. Uno, C. Schwanda, L. E. Piilonen, T. Schietinger, H. J. Kim, J. H. Kang, R. Itoh, Hiroyuki Sagawa, H. Kichimi, A. Garmash, A. Chen, Shaji Kumar, Tapas Sarangi, K. Kinoshita, Hitoshi Yamamoto, Kevin Varvell, Phillip Urquijo, A. Chuvikov, M. Starič, K. Miyabayashi, J. Dalseno, M. Yamauchi, Hirokazu Ishino, T. Aushev, T. Tsuboyama, T. Lesiak, Kazuo Abe, B. D. Yabsley, Y. Asano, P. Kapusta, J. Dragic, S. Okuno, H. Aihara, D. Mohapatra, H. Kawai, S. L. Olsen, W. S. Hou, C. H. Wang, Antonio Limosani, R. Pestotnik, G. R. Moloney, T. Sumiyoshi, Jia-ju Zhang, Noriaki K. Sato, Y. Yamashita, Y. Sakai, K. Senyo, T. Gershon, T. Kawasaki, G. Leder, Andrej Gorišek, S. Stanič, N. Parslow, Long Zhang, F. Mandl, S. R. Hou, T. Nagamine, U. Bitenc, T. Nozaki, Y. Teramoto, K. Tamai, M. E. Sevior, H. Nakazawa, G. Gokhroo, T. Okabe, H. Shibuya, M. Watanabe, M. Tanaka, A. J. Schwartz, M. Bračko, W. T. Chen, Y. Mikami, T. Shibata, P. Chang, X. C. Tian, Osamu Tajima, Q. L. Xie, J. Haba, O. Nitoh, A. Kuzmin, S. Ogawa, K. Sumisawa, Masashi Hazumi, Rainer Stamen, T. Uglov, L. Hinz, S. Nishida, T. E. Browder, M. Danilov, C. C. Kuo, K. Hara, S. Eidelman, P. Pakhlov, A. Bozek, J. B. Singh, S. K. Choi, J. Ying, Motoki Iwasaki, Y. Ushiroda, Y. Choi, J. S. Kang, and S. Banerjee
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, Resonance, law.invention, Nuclear physics, Pion, KEKB, law, CP violation, High Energy Physics::Experiment, B meson, Nuclear Experiment, Collider
Abstract: We report measurements of time-dependent decay rates for B 0 → D ∗ ∓ π ± decays and extraction of CP violation parameters related to ϕ 3 . We use a partial reconstruction technique, whereby signal events are identified using information only from the primary pion and the charged pion from the decay of the D ∗ ∓ . The analysis uses 140 fb −1 of data accumulated at the ϒ ( 4 S ) resonance with the Belle detector at the KEKB asymmetric-energy e + e − collider. We measure the CP violation parameters S + = 0.035 ± 0.041 ( stat ) ± 0.018 ( syst ) and S − = 0.025 ± 0.041 ( stat ) ± 0.018 ( syst ) .
Published: 2005

22. Measurement of γγ→pp¯ production at Belle

Author: S. Nishida, Simon Blyth, F. Mand, J. H. Kang, H. Palka, L. E. Piilonen, V.N. Zhilich, T. Schietinger, W. A. Mitaroff, R. Kulasiri, J. Dalseno, G. Leder, H. Nakazawa, G. Gokhroo, R. Chistov, H. J. Kim, P. Krokovny, M. Iwasaki, Kazuo Abe, B. D. Yabsley, W. S. Hou, Masashi Hazumi, A. Go, E. Nakano, M. Starič, A. Ishikawa, A. Bay, Y. Hoshi, V. M. Aulchenko, Q. L. Xie, T. Aushev, Long Zhang, J. Haba, Y. Asano, P. Kapusta, S. Okuno, Osamu Tajima, F. Takasaki, A. Yamaguchi, Timothy Gershon, Jasvinder A. Singh, S. W. Lin, T. Uglov, K. Tamai, A. Matyja, A. Bondar, M. E. Sevior, M. Dash, T. Sumiyoshi, K. Hayasaka, K. Senyo, Andrej Gorišek, W. Ostrowicz, M. Danilov, C. C. Kuo, T. Kawasaki, S. Stanič, S. Uno, O. Nitoh, K. Inami, H. Kawai, S. Fratina, Gobinda Majumder, Y. Teramoto, S. Y. Suzuki, T. Tsukamoto, D. Liventsev, Akira Sugiyama, Hiroyuki Sagawa, A. Somov, K. Ueno, N. Tamura, H. Park, A. Bozek, I. Bizjak, T. Matsumoto, Yasushi Nagasaka, G. S. Varner, Hiroaki Aihara, Anton Poluektov, R. Itoh, J. Ying, Yuji Enari, Noriaki K. Sato, Rainer Stamen, R. Mizuk, Byung Gu Cheon, H. Kichimi, H. Shibuya, S. Ogawa, W. T. Chen, M. Watanabe, U. Bitenc, M. C. Chang, Zhenyu Zhang, H. Hayashii, T. Lesiak, Y. Yamashita, P. Chang, Y. J. Kwon, D. Zürcher, J. MacNaughton, A. Drutskoy, B. Shwartz, O. Schneider, S. M. Kim, A. Chuvikov, X. C. Tian, G. N. Taylor, D. Žontar, C. C. Wang, M. Nakao, Heyoung Yang, T. Hokuue, C. H. Wang, H. R. Khan, L. S. Peak, M. Yamauchi, Y. Sakai, S. R. Hou, A. Chen, R. Pestotnik, I. Bedny, J. S. Kang, S. Eidelman, N. Soni, Takehiko Mori, G. R. Moloney, Y. Choi, A.S. Kuzmin, S. Cole, S. L. Olsen, I. Adachi, S. Villa, H. Miyake, Toru Iijima, S. Uehara, S. Bahinipati, Suneel Kumar, M. Bračko, A. Imoto, A. M. Bakich, Z. Natkaniec, T. Ohshima, and N. Gabyshev
Subjects: Physics, Nuclear and High Energy Physics, Angular range, 010308 nuclear & particles physics, Branching fraction, 01 natural sciences, law.invention, Nuclear physics, Angular distribution, KEKB, law, 0103 physical sciences, Center of mass, 010306 general physics, Collider, Positron annihilation
Abstract: A high precision study of the process γγ→pp has been performed using a data sample of 89 fb-1 collected with the Belle detector at the KEKB e+e- collider. The cross section of pp production has been measured at two-photon center-of-mass (c.m.) energies between 2.025 and 4.0 GeV and in the c.m. angular range of |cosθ*
Published: 2005

23. Study of the baryon–antibaryon low-mass enhancements in charmless three-body baryonic B decays

Author: M. H. Tanaka, Hiroyuki Sagawa, H. Nakazawa, G. Gokhroo, N. Soni, T. Aushev, Phillip Urquijo, H. J. Kim, L. Hinz, Timothy Gershon, Osamu Tajima, S. M. Kim, O. Nitoh, H. Kawai, S. Nishida, Hiroaki Aihara, H. Miyata, Rainer Stamen, S. L. Olsen, N. Katayama, V.A. Sidorov, V.N. Zhilich, Y. Hoshi, I. Bedny, J. Li, N. Tamura, Zhenyu Zhang, J. S. Kang, W. A. Mitaroff, Y. Sakai, B. Shwartz, Yasushi Nagasaka, Youngjoon Kwon, S. K. Choi, A. Imoto, A. M. Bakich, Z. Natkaniec, T. Ohshima, M. Iwasaki, A. Drutskoy, J. Schümann, K. Hayasaka, S. Cole, D. Žontar, L. S. Peak, J. H. Kang, N. Gabyshev, R. Mizuk, P. Krokovny, D. Liventsev, S. Eidelman, T. Sumiyoshi, M. Dash, J. Ying, H. Ozaki, N. Parslow, Kevin Varvell, H. Palka, Jolanta Brodzicka, J. Dalseno, Seong Keun Kim, L. E. Piilonen, T. Schietinger, V. M. Aulchenko, I. Bizjak, B. Golob, G. S. Varner, M. Starič, Y. B. Hsiung, A. Ishikawa, R. Pestotnik, A.S. Kuzmin, A. Matyja, E. Nakano, T. E. Browder, S. E. Lee, F. Takasaki, C. W. Park, P. Križan, R. Itoh, A. Yamaguchi, W. S. Hou, Y.-J. Lee, Jasvinder A. Singh, S. W. Lin, M. C. Chang, Y. Iwasaki, G. R. Moloney, A. Chen, Long Zhang, Suneel Kumar, F. Fang, M. Bračko, C. C. Wang, O. Schneider, A. Somov, S. Fratina, Kai-Feng Chen, A. Bozek, T. Matsumoto, H. Shibuya, K. Senyo, T. Kawasaki, K. Kinoshita, S. Stanič, M. Watanabe, A. Chuvikov, H. Kichimi, Y. Yamashita, M. Danilov, C. C. Kuo, T. Nagamine, J. MacNaughton, T. L. Kuo, S. Uno, T. Tsukamoto, Byung Gu Cheon, S. R. Hou, K. Inami, C. H. Wang, M. Yamauchi, H. Miyake, Toru Iijima, S. Villa, S. Uehara, X. C. Tian, S. Bahinipati, J. Haba, Y. Chao, H. R. Khan, M. Nakao, G. Leder, F. Mandl, K. Tamai, M. E. Sevior, N.I. Root, W. Ostrowicz, K. Ueno, W. T. Chen, T. Shibata, P. Chang, Yuji Enari, T. Lesiak, Q. L. Xie, Kazuo Abe, B. D. Yabsley, Y. Asano, Andrej Gorišek, Y. Teramoto, T. Okabe, Heyoung Yang, T. Hokuue, R. Chistov, Samo Korpar, Meng Wang, Noriaki K. Sato, U. Bitenc, S. Ogawa, K. Sumisawa, Masashi Hazumi, and T. Uglov
Subjects: Nuclear physics, Baryon, Physics, High Energy Physics - Experiment (hep-ex), Nuclear and High Energy Physics, Particle physics, Angular distribution, Web of science, Electron–positron annihilation, FOS: Physical sciences, Low Mass, High Energy Physics - Experiment
Abstract: The angular distributions of the baryon-antibaryon low-mass enhancements seen in the charmless three-body baryonic B decays B+ -> p pbar K+, B0 -> p pbar Ks, and B0 -> p Lambdabar pi- are reported. A quark fragmentation interpretation is supported, while the gluonic resonance picture is disfavored. Searches for the Theta+ and Theta++ pentaquarks in the relevant decay modes and possible glueball states G with 2.2 GeV/c2 < M-ppbar < 2.4 GeV/c2 in the ppbar systems give null results. We set upper limits on the products of branching fractions, B(B0 -> Theta+ p)\times B(Theta+ -> p Ks) < 2.3 \times 10^{-7}, B(B+ -> Theta++ pbar) \times B(Theta++ -> p K+) < 9.1 \times 10^{-8}, and B(B+ -> G K+) \times B(G -> p pbar) < 4.1 \times 10^{-7} at the 90% confidence level. The analysis is based on a 140 fb^{-1} data sample recorded on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider., 14 pages, 13 figure files, update of hep-ex/0409010 for journal submisssion
Published: 2005

24. Spectra of prompt electrons from decays of B+ and B0 mesons and ratio of inclusive semielectronic branching fractions

Author: N. Tamura, D. Žontar, F. Mandl, S. Uno, Y. Iwasaki, E. Nakano, Y. Sakai, Jie Zhang, Y. J. Kwon, T. E. Browder, C. Schwanda, M. E. Sevior, Patrick Koppenburg, S. M. Kim, O. Schneider, Osamu Tajima, W. Ostrowicz, G. R. Moloney, M. Z. Wang, K. Kinoshita, H. Kawai, O. Nitoh, T. Aushev, C. H. Wang, H. Palka, Masashi Hazumi, S. Suzuki, S. R. Hou, A. Ishikawa, Yasushi Nagasaka, L. E. Piilonen, T. Schietinger, A. Yamaguchi, Jasvinder A. Singh, S. W. Lin, Antonio Limosani, W. S. Hou, A. Bay, S. E. Lee, T. Nozaki, Hiroaki Aihara, X. C. Tian, J. S. Lange, K. S. Park, F. Takasaki, A. Chuvikov, C. W. Park, J. Haba, R. Mizuk, Long Zhang, U. Bitenc, Rainer Stamen, H. Kichimi, A. Go, Kazuo Abe, B. D. Yabsley, T. Hara, Y. Asano, P. Kapusta, S. Okuno, M. Nakao, Gobinda Majumder, M. Starič, Zhenyu Zhang, I. Adachi, M. Rozanska, T. Uglov, S. L. Olsen, Takuya Higuchi, T. Tsukamoto, D. Liventsev, C. C. Wang, J. H. Kang, S. K. Choi, A. Garmash, H. Shibuya, A. Bondar, A. Drutskoy, J. Dalseno, M. Watanabe, Y. Teramoto, K. Ueno, K. Inami, Semen Eidelman, M. Akatsu, T. Okabe, S. Korpar, Jolanta Brodzicka, V. Eiges, Y. Hoshi, Heyoung Yang, J. MacNaughton, A. Somov, G. S. Varner, T. J. Gershon, M. H. Tanaka, T. Hokuue, G. Gokhroo, Y. Yamashita, Hiroyuki Sagawa, W. T. Chen, R. Chistov, T. Sumiyoshi, D. Mohapatra, Y. Watanabe, Yuji Enari, N. Gabyshev, A. M. Bakich, R. Itoh, H. J. Kim, Tapas Sarangi, Jung-Hyun Kim, Kevin Varvell, N. Parslow, S. Ogawa, H. Miyata, Byung Gu Cheon, S. Cole, A. Matyja, Ilija Bizjak, H. Miyake, T. Lesiak, V.N. Zhilich, J. Ying, P. Krokovny, S. H. Lee, Kai-Feng Chen, Simon Blyth, S. Semenov, W. A. Mitaroff, H. Hayashii, S. Fratina, Young-Il Choi, K. Sumisawa, S. Y. Suzuki, T. Kawasaki, J. Schümann, K. Hayasaka, T. Nagamine, M. Dash, T. Matsumoto, S. Stanič, R. Pestotnik, Akira Sugiyama, B. Golob, Toru Iijima, Y. Choi, S. Uehara, N. Katayama, Y. Chao, Rolf Seuster, A. Chen, J. S. Kang, I. Bedny, J. Li, S. Banerjee, Y. Yusa, N. Soni, Y. Ban, M. Yamauchi, M. Danilov, C. C. Kuo, L. Hinz, S. Nishida, M. Bračko, H. Park, A. Imoto, Z. Natkaniec, A. Bozek, and T. Ohshima
Subjects: Semileptonic decay, Nuclear physics, Physics, Nuclear and High Energy Physics, KEKB, Meson, High Energy Physics::Phenomenology, High Energy Physics::Experiment, B meson, Electron, Rest frame, Branching (polymer chemistry), Spectral line
Abstract: We present spectra of prompt electrons from decays of neutral and charged B mesons. The results are based on 140 fb −1 of data collected by the Belle detector on the ϒ ( 4 S ) resonance at the KEKB e + e − asymmetric collider. We tag ϒ ( 4 S ) → B B ¯ events by reconstructing a B meson in one of several hadronic decay modes; the semileptonic decay of the other B meson is inferred from the presence of an identified electron. We obtain for charged and neutral B mesons the partial rates of semileptonic decay, to electrons with momentum greater than 0.6 GeV / c in the B rest frame, and their ratio b + / b 0 = 1.08 ± 0.05 ± 0.02 , where the first and second errors are statistical and systematic, respectively.
Published: 2005

25. Measurement of the γγ→π+π− and γγ→K+K− processes at energies of 2.4–4.1 GeV

Author: N. Soni, Takehiko Mori, Y. Ban, E. Nakano, Y. Sakai, D. Epifanov, N. Tamura, K. Inami, A. Yamaguchi, A. Imoto, A. M. Bakich, Z. Natkaniec, T. Ohshima, X. C. Tian, J. S. Kang, S. R. Hou, Jasvinder A. Singh, S. W. Lin, N. Gabyshev, H. Hayashii, S. Banerjee, M. Nakao, S. L. Olsen, Y. Yusa, S. Eidelman, J. Ying, D. Žontar, M. H. Tanaka, V. M. Aulchenko, G. Leder, Y. Choi, T. Iijima, Hiroyuki Sagawa, A.S. Kuzmin, F. Mandl, H. R. Khan, S. Nishida, Zhenyu Zhang, Osamu Tajima, S. Blyth, R. Pestotnik, W. Ostrowicz, A. Drutskoy, B. Shwartz, T. Aushev, O. Nitoh, M. Iwasaki, Kazuo Abe, B. D. Yabsley, Y. Asano, S. Okuno, M. Yamauchi, Seong Keun Kim, P. Krokovny, T. J. Gershon, Hiroaki Aihara, Y. Watanabe, Yuji Enari, H. Kichimi, S. Villa, P. Pakhlov, Rainer Stamen, M. Bračko, A. Chen, Y. Teramoto, A. Bondar, T. Okabe, S. Korpar, H. Park, A. Bozek, Jolanta Brodzicka, T. Tsuboyama, T. Lesiak, T. Sumiyoshi, D. Mohapatra, N. Parslow, H. Palka, L. E. Piilonen, K. Sumisawa, I. Bedny, J. Li, T. Schietinger, S. Y. Suzuki, R. Kulasiri, Jung-Hyun Kim, M. Danilov, V.N. Zhilich, C. C. Kuo, W. A. Mitaroff, R. Chistov, S. Uehara, Young-Il Choi, S. Ogawa, N. Katayama, T. Uglov, S. Bahinipati, H. Miyake, M. Starič, D. Liventsev, H. Nakazawa, G. Gokhroo, H. J. Kim, I. Bizjak, G. S. Varner, W. S. Hou, Long Zhang, R. Itoh, S. Fratina, R. Mizuk, K. Senyo, T. Kawasaki, S. Stanič, T. Matsumoto, M. Dash, A. Chuvikov, A. Matyja, A. Somov, L. S. Peak, Y. Iwasaki, Y. J. Kwon, O. Schneider, Y. Yamashita, T. Nagamine, C. H. Wang, H. Shibuya, M. Watanabe, S. Uno, Gobinda Majumder, S. U. Kataoka, T. Tsukamoto, Byung Gu Cheon, Noriaki K. Sato, U. Bitenc, J. H. Kang, H. Kawai, A. Garmash, J. Dalseno, Yasushi Nagasaka, A. Ishikawa, S. E. Lee, T. Nozaki, F. Takasaki, C. W. Park, P. Križan, C. C. Wang, M. Akatsu, S. M. Kim, H. Miyata, Y. Hoshi, J. Schümann, and K. Hayasaka
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, KEKB, Pion, Pair production, Meson, Hadron, Elementary particle, Atomic physics, Quarkonium, Boson
Abstract: We have measured π + π − and K + K − production in two-photon collisions using 87.7 fb −1 of data collected with the Belle detector at the asymmetric energy e + e − collider KEKB. The cross sections are measured to high precision in the two-photon center-of-mass energy ( W ) range between 2.4 GeV W 4.1 GeV and angular region | cos θ ∗ | 0.6 . The cross section ratio σ ( γ γ → K + K − ) / σ ( γ γ → π + π − ) is measured to be 0.89 ± 0.04 ( stat. ) ± 0.15 ( syst. ) in the range of 3.0 GeV W 4.1 GeV , where the ratio is energy-independent. We observe a sin −4 θ ∗ behavior of the cross section in the same W range. Production of χ c 0 and χ c 2 mesons is observed in both γ γ → π + π − and γ γ → K + K − modes.
Published: 2005

26. Search for τ→eγ decay at Belle

Author: S. U. Kataoka, G. Gokhroo, Noriaki K. Sato, U. Bitenc, H. J. Kim, M. Iwasaki, T. Aushev, Heyoung Yang, T. Hokuue, S. Blyth, S. Ogawa, J. Haba, C. C. Wang, B. Shwartz, V.N. Zhilich, H. R. Khan, D. Epifanov, Osamu Tajima, A. Matyja, Y. Yamashita, S. Uno, A. Bondar, A. Ishikawa, Jolanta Brodzicka, Y. Choi, K. Inami, M. C. Chang, Y. Iwasaki, O. Nitoh, G. Leder, Y. J. Kwon, H. Miyata, W. A. Mitaroff, A. Chuvikov, S. L. Olsen, K. Sumisawa, W. S. Hou, S. E. Lee, F. Takasaki, C. W. Park, S. Y. Suzuki, T. Nagamine, M. H. Tanaka, Y. Hoshi, Y. Sakai, V.A. Sidorov, O. Schneider, A.S. Kuzmin, E. Nakano, N. Tamura, S. Fratina, Long Zhang, Hiroyuki Sagawa, T. Tsukamoto, Kazuo Abe, Young-Il Choi, Y. Asano, K. Miyabayashi, Hiroaki Aihara, J. Schümann, K. Hayasaka, Masashi Hazumi, S. Okuno, F. Mandl, K. Senyo, H. Kawai, Rainer Stamen, A. Imoto, M. Dash, T. Matsumoto, A. M. Bakich, D. Žontar, A. Yamaguchi, T. Kawasaki, S. Stanič, P. Krokovny, T. Uglov, Z. Natkaniec, T. Ohshima, N. Soni, S. W. Lin, Byung Gu Cheon, Yasushi Nagasaka, Y. Teramoto, T. Okabe, H. Shibuya, M. Watanabe, I. Bedny, J. Li, W. Ostrowicz, J. H. Kang, N.I. Root, I. Bizjak, A. Garmash, G. S. Varner, W. T. Chen, J. Dalseno, A. Somov, H. Hayashii, P. Chang, Jung-Hyun Kim, M. Starič, J. S. Kang, N. Gabyshev, You-Jin Yuan, S. M. Kim, M. Yamauchi, Yuji Enari, H. Kichimi, S. Eidelman, T. Tsuboyama, C. H. Wang, T. Lesiak, S. R. Hou, X. C. Tian, M. Nakao, S. H. Lee, M. Bračko, R. Pestotnik, A. Chen, Zhenyu Zhang, T. E. Browder, Timothy Gershon, C. C. Kuo, L. Hinz, S. Nishida, Seong Keun Kim, H. Palka, L. E. Piilonen, T. Schietinger, P. Pakhlov, A. Bozek, R. Chistov, T. Sumiyoshi, N. Parslow, S. Villa, S. Uehara, N. Katayama, S. Bahinipati, H. Miyake, and Toru Iijima
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, Decays of taus, Taus, Lepton number, law.invention, Nuclear physics, KEKB, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider
Abstract: We have searched for the lepton-flavor-violating decay τ → e γ using a data sample of 86.7 fb−1 collected with the Belle detector at the KEKB asymmetric e + e − collider. No evidence for a signal is obtained, and we set an upper limit for the branching fraction B ( τ → e γ ) 3.9 × 10 −7 at the 90% C.L.
Published: 2005

27. Observation of B+→K+ηγ

Author: O. Nitoh, Kazuo Abe, T. Hara, G. Leder, Hiroaki Aihara, Y. Asano, P. Kapusta, S. Okuno, F. Mandl, A. Ishikawa, Takuya Higuchi, Rainer Stamen, Jie Zhang, M. H. Tanaka, S. E. Lee, Y. Choi, A. Somov, Y. Teramoto, S. R. Hou, F. Takasaki, C. W. Park, Hiroyuki Sagawa, M. E. Sevior, P. Križan, Timothy Gershon, R. Mizuk, W. Ostrowicz, R. Pestotnik, T. Okabe, E. Nakano, M. Dash, A. Chuvikov, S. Uno, M. Starič, B. Golob, M. Yamauchi, H. Miyata, Y. Hoshi, K. Inami, Zhenyu Zhang, Y. Sakai, W. S. Hou, J. Schümann, K. Hayasaka, T. Kawasaki, H. Park, Yuji Enari, H. Kichimi, S. Stanič, S. K. Choi, A. Drutskoy, D. Zürcher, Long Zhang, A. Bozek, T. Tsuboyama, V. M. Aulchenko, S. M. Kim, T. Lesiak, L. Y. Dong, S. Suzuki, M. Iwasaki, T. E. Browder, M. Danilov, C. C. Kuo, J. Ying, L. Hinz, S. Nishida, W. T. Chen, X. C. Tian, J. Haba, A. Bondar, S. Korpar, M. Nakao, Jolanta Brodzicka, Takehiko Mori, Y. Chao, Y. Ban, D. Liventsev, M. Z. Wang, P. Krokovny, I. Bizjak, C. H. Wang, J. S. Lange, G. S. Varner, H. Nakazawa, D. Epifanov, G. Gokhroo, A. Imoto, A. M. Bakich, R. Itoh, F. Fang, K. S. Park, Z. Natkaniec, T. Ohshima, P. Schonmeier, S. L. Olsen, H. Hayashii, Tapas Sarangi, C. C. Wang, A. J. Schwartz, H. J. Kim, C. C. Zhang, Kevin Varvell, H. Shibuya, M. Watanabe, V. Eiges, N. Gabyshev, Y. Yamashita, M. Akatsu, A. Chen, T. Nagamine, H. Palka, L. E. Piilonen, A. Matyja, T. Schietinger, I. Bedny, J. Li, J. S. Kang, M. Bračko, H. Ozaki, S. H. Lee, A. Yamaguchi, S. Banerjee, Y. Yusa, S. Eidelman, Jasvinder A. Singh, S. W. Lin, S. Fratina, H. Kawai, Yasushi Nagasaka, R. Chistov, T. Matsumoto, S. Blyth, Y. Ushiroda, T. Sumiyoshi, N. Parslow, V.N. Zhilich, W. A. Mitaroff, J. MacNaughton, Young-Il Choi, K. Miyabayashi, T. Aushev, S. Ogawa, N. Tamura, J. Dragic, D. Žontar, Masashi Hazumi, T. Uglov, Gobinda Majumder, T. Tsukamoto, Heyoung Yang, Byung Gu Cheon, S. Cole, T. Hokuue, H. Miyake, S. U. Kataoka, Y. J. Kwon, O. Schneider, J. H. Kang, A. Garmash, G. R. Moloney, J. Dalseno, Patrick Koppenburg, Toru Iijima, L. S. Peak, Noriaki K. Sato, K. F. Chen, U. Bitenc, S. Uehara, N. Katayama, S. Bahinipati, Rolf Seuster, D. Mohapatra, K. Sumisawa, S. Y. Suzuki, and Osamu Tajima
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, KEKB, Branching fraction, Electron–positron annihilation, Radiative B decay, Radiative transfer, Resonance, Storage ring
Abstract: We report measurements of radiative B decays with K η γ final states, using a data sample of 253 fb −1 recorded at the ϒ ( 4 S ) resonance with the Belle detector at the KEKB e + e − storage ring. We observe B + → K + η γ for the first time with a branching fraction of ( 8.4 ± 1.5 (stat) −0.9 +1.2 (syst) ) × 10 −6 for M K η 2.4 GeV / c 2 , and find evidence of B 0 → K 0 η γ . We also search for B → K 3 ∗ ( 1780 ) γ .
Published: 2005

28. Study of the D0→K+K−π+π− decay

Author: V. Arena, D. Lopes Pegna, Luigi Benussi, I. Gaines, K. B. Lee, A. M. Lopez, T. Handler, A. Massafferri, I. Segoni, D. Y. Kim, Marco A. Reyes, A. E. Kreymer, M. Boschini, E. Cuautle, Gianluca Alimonti, L. Agostino, C. Uribe, P. H. Garbincius, J. E. Ramirez, M. Mezzadri, A. Sanchez-Hernandez, S. Erba, Y. Zhang, P. H. Kasper, A. Kryemadhi, Harry Cheung, J. W. Kwak, S. P. Ratti, M. Bertani, J. S. Kang, Michael S. Webster, Robert Gardner, J. E. Moore, James E Wiss, Erica Polycarpo, Marco Rovere, L. Edera, D. Engh, B. R. Ko, P. M. Yager, M. H.L.S. Wang, R. Mitchell, A. Rahimi, D. Pantea, Kyung-Suk Cho, Sandra Malvezzi, F. Leveraro, J. N. Butler, M. Sheaff, P. D'Angelo, M. M. Merlo, J. Magnin, Stefano Bianco, A. Zallo, F. Prelz, Erik Gottschalk, Dario Menasce, S. Carrillo, R. Kutschke, A. A. Machado, Cristina Riccardi, Daniele Pedrini, A. Paris, Y. S. Chung, J. M. De Miranda, T. F. Davenport, John Perry Cumalat, P. Inzani, G. Chiodini, J. Quinones, C. Göbel, L. Cinquini, Paolo Vitulo, Gabriele Gianini, C. Cawlfield, H. Mendez, C. Pontoglio, Paolo Dini, M. Hosack, E. Casimiro, E. Luiggi, H. Hernandez, S. Sala, Kevin Stenson, Agustín Cobos Cerutti, Germano Bonomi, Paul Sheldon, S. Barberis, Eric Wayne Vaandering, Luigi Moroni, G. Boca, Ignacio Bediaga, A. C. dos Reis, L. A. Garren, B. O'Reilly, Iuri Muniz Pepe, M. DiCorato, H. Park, W. E. Johns, J. C. Anjos, James R. Wilson, G. Liguori, F. Vázquez, J. M. Link, F. L. Fabbri, and M. S. Nehring
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Crystallography, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Order (ring theory)
Abstract: Using data from the FOCUS (E831) experiment at Fermilab, the authors present a new measurement for the Cabibbo-suppressed decay mode D{sup 0} {yields} K{sup +}K{sup -}{pi}{sup +}{pi}{sup -}. They measure: {Lambda}(D{sup 0} {yields} K{sup +}K{sup -}{pi}{sup +}{pi}{sup -})/{Lambda}(D{sup 0} {yields} K{sup -}{pi}{sup -}{pi}{sup +}{pi}{sup +}) = 0.0295 {+-} 0.0011 {+-} 0.0008. An amplitude analysis has been performed in order to determine the resonant substructure of this decay mode. The dominant components are the decays D{sup 0} {yields} K{sub 1}(1270){sup +} K{sup -}, D{sup 0} {yields} K{sub 1}(1400){sup +}K{sup -} and D{sup 0} {yields} {rho}(770){sup 0}{phi}(1020).
Published: 2005

29. Analysis of the semileptonic decay D0→K¯0π−μ+ν

Author: Erik Gottschalk, A. A. Machado, C. Cawlfield, John Perry Cumalat, L. Cinquini, G. Boca, M. Boschini, P. H. Garbincius, B. R. Ko, A. Sanchez-Hernandez, S. Erba, P. M. Yager, W. E. Johns, Y. Zhang, Kyung-Suk Cho, G. Chiodini, Daniele Pedrini, S. Barberis, Paolo Dini, M. Hosack, James E Wiss, F. Leveraro, C. Göbel, H. Park, P. Inzani, A. Zallo, E. Casimiro, M. DiCorato, L. Agostino, Marco A. Reyes, M. Bertani, Paolo Vitulo, M. Sheaff, Sandra Malvezzi, V. Arena, J. M. Link, D. Lopes Pegna, Luigi Benussi, Erica Polycarpo, D. Y. Kim, J. S. Kang, J. C. Anjos, J. W. Kwak, S. P. Ratti, Iuri Muniz Pepe, James R. Wilson, F. Prelz, A. Kryemadhi, J. Magnin, J. N. Butler, Dario Menasce, D. Engh, G. Liguori, Gabriele Gianini, P. D'Angelo, F. Vázquez, C. Pontoglio, Germano Bonomi, F. L. Fabbri, Kevin Stenson, I. Gaines, P. H. Kasper, Gianluca Alimonti, M. S. Nehring, I. Segoni, Stefano Bianco, E. Cuautle, B. O'Reilly, Paul Sheldon, H. Mendez, Cristina Riccardi, K. B. Lee, J. Quinones, Harry Cheung, M. M. Merlo, J. E. Moore, R. Kutschke, Y. S. Chung, Eric Wayne Vaandering, L. A. Garren, M. Mezzadri, A. E. Kreymer, C. Uribe, J. E. Ramirez, A. Rahimi, A. Cerutti, A. M. Lopez, A. Paris, E. Luiggi, H. Hernandez, D. Pantea, T. Handler, A. Massafferri, L. Edera, S. Sala, R. Mitchell, Ignacio Bediaga, S. Carrillo, J. M. De Miranda, T. F. Davenport, Michael S. Webster, Robert Gardner, Marco Rovere, Luigi Moroni, Michael Wang, and A. C. dos Reis
Subjects: Nuclear physics, Quantum chromodynamics, Physics, Semileptonic decay, Nuclear and High Energy Physics, Particle physics, Amplitude, Branching fraction, Form factor (quantum field theory), Fermilab, Measure (mathematics), Particle identification
Abstract: Using data collected by the fixed target Fermilab experiment FOCUS, we present several first measurements for the semileptonic decay D0→K¯0π−μ+ν. Using a model that includes a K¯0π− s-wave component, we measure the form factor ratios to be rv=1.71±0.68±0.34 and r2=0.91±0.37±0.10 and the s-wave amplitude to be A=0.35±0.22±0.05GeV−1. Finally, we measure the vector semileptonic branching ratio Γ(D0→K*(892)−μ+ν)Γ(D0→K¯0π−π+)=0.337±0.034±0.013.
Published: 2005

30. A study of D0→KS0KS0X decay channels

Author: Michael S. Webster, Robert Gardner, Marco Rovere, M. M. Merlo, J. Quinones, T. Handler, A. Massafferri, P. M. Yager, E. Luiggi, H. Hernandez, D. Y. Kim, S. Carrillo, Marco A. Reyes, Eric Wayne Vaandering, Y. Zhang, R. Mitchell, M. Mezzadri, P. D'Angelo, L. Agostino, Luigi Moroni, J. M. De Miranda, A. M. Lopez, L. A. Garren, D. Pantea, H. Mendez, J. E. Moore, Gianluca Alimonti, D. Engh, B. R. Ko, A. Kryemadhi, T. F. Davenport, A. C. dos Reis, G. Chiodini, Kyung-Suk Cho, A. Zallo, A. E. Kreymer, S. Erba, C. Göbel, C. Uribe, J. E. Ramirez, R. Kutschke, Paolo Vitulo, G. Boca, Y. S. Chung, I. Segoni, E. Cuautle, Paolo Dini, P. H. Kasper, M. H.L.S. Wang, A. Rahimi, Erica Polycarpo, M. Hosack, E. Casimiro, Germano Bonomi, John Perry Cumalat, Agustín Cobos Cerutti, L. Cinquini, S. Sala, J. W. Kwak, S. P. Ratti, Gabriele Gianini, A. Paris, B. O'Reilly, C. Cawlfield, C. Pontoglio, Kevin Stenson, S. Barberis, Sandra Malvezzi, F. Prelz, Erik Gottschalk, Paul Sheldon, W. E. Johns, A. A. Machado, V. Arena, J. C. Anjos, D. Lopes Pegna, Luigi Benussi, Ignacio Bediaga, M. Sheaff, J. Magnin, Dario Menasce, L. Edera, Iuri Muniz Pepe, James E Wiss, F. Leveraro, Stefano Bianco, Cristina Riccardi, K. B. Lee, Harry Cheung, Daniele Pedrini, I. Gaines, P. Inzani, M. Bertani, J. N. Butler, M. Boschini, P. H. Garbincius, M. DiCorato, A. Sanchez-Hernandez, H. Park, J. S. Kang, J. M. Link, James R. Wilson, G. Liguori, F. Vázquez, F. L. Fabbri, and M. S. Nehring
Subjects: Physics, Nuclear and High Energy Physics, Crystallography, Meson, Branching fraction, Atomic physics
Abstract: Using data from the FOCUS experiment (FNAL-E831), we report on the decay of D 0 mesons into final states containing more than one K S 0 . We present evidence for two Cabibbo favored decay modes, D 0 → K S 0 K S 0 K − π + and D 0 → K S 0 K S 0 K + π − , and measure their combined branching fraction relative to D 0 → K ¯ 0 π + π − to be Γ ( D 0 → K S 0 K S 0 K ± π ∓ ) Γ ( D 0 → K ¯ 0 π + π − ) = 0.0106 ± 0.0019 ± 0.0010 . Further, we report new measurements of Γ ( D 0 → K S 0 K S 0 K S 0 ) Γ ( D 0 → K ¯ 0 π + π − ) = 0.0179 ± 0.0027 ± 0.0026 , Γ ( D 0 → K 0 K ¯ 0 ) Γ ( D 0 → K ¯ 0 π + π − ) = 0.0144 ± 0.0032 ± 0.0016 , and Γ ( D 0 → K S 0 K S 0 π + π − ) Γ ( D 0 → K ¯ 0 π + π − ) = 0.0208 ± 0.0035 ± 0.0021 where the first error is statistical and the second is systematic.
Published: 2005

31. Measurement of the branching ratio of the decay D0→π−μ+ν relative to D0→K−μ+ν

Author: M. Boschini, P. H. Garbincius, M. Sheaff, John Perry Cumalat, L. Cinquini, G. Boca, Germano Bonomi, James E Wiss, F. Leveraro, Marco A. Reyes, J. E. Moore, D. Pantea, P. M. Yager, L. Agostino, F. L. Fabbri, Iuri Muniz Pepe, B. O'Reilly, S. Sala, Erica Polycarpo, Y. Zhang, S. Erba, Kyung-Suk Cho, Luigi Moroni, J. Magnin, Dario Menasce, Eric Wayne Vaandering, Gabriele Gianini, A. Kryemadhi, Stefano Bianco, M. S. Nehring, C. Cawlfield, C. Pontoglio, Cristina Riccardi, P. D'Angelo, Kevin Stenson, E. Luiggi, H. Hernandez, Ignacio Bediaga, A. E. Kreymer, T. Handler, A. Massafferri, Gianluca Alimonti, C. Uribe, J. E. Ramirez, L. A. Garren, S. Barberis, B. R. Ko, Sandra Malvezzi, S. Carrillo, J. W. Kwak, S. P. Ratti, K. B. Lee, V. Arena, A. C. dos Reis, D. Lopes Pegna, Michael S. Webster, R. Mitchell, Erik Gottschalk, J. M. De Miranda, A. A. Machado, T. F. Davenport, Luigi Benussi, Robert Gardner, J. M. Link, Marco Rovere, F. Prelz, H. Mendez, Harry Cheung, M. Mezzadri, D. Engh, James R. Wilson, G. Liguori, A. Zallo, L. Edera, F. Vázquez, M. DiCorato, M. M. Merlo, H. Park, R. Kutschke, G. Chiodini, Y. S. Chung, I. Segoni, E. Cuautle, C. Göbel, Paolo Vitulo, Paul Sheldon, J. Quinones, Paolo Dini, M. Hosack, E. Casimiro, Daniele Pedrini, P. Inzani, J. C. Anjos, J. S. Kang, M. H.L.S. Wang, A. Rahimi, A. Cerutti, W. E. Johns, A. M. Lopez, A. Paris, A. Sanchez-Hernandez, M. Bertani, J. N. Butler, I. Gaines, P. H. Kasper, and D. Y. Kim
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Branching fraction, Form factor (quantum field theory), Analytical chemistry
Abstract: We present a new measurement of the branching ratio of the Cabibbo suppressed decay D 0 → π − μ + ν relative to the Cabibbo favored decay D 0 → K − μ + ν and an improved measurement of the ratio | f + π ( 0 ) / f + K ( 0 ) | . Our results are 0.074 ± 0.008 ± 0.007 for the branching ratio and 0.85 ± 0.04 ± 0.04 ± 0.01 for the form factor ratio, respectively.
Published: 2005

32. Measurements of the q2 dependence of the D0→K−μ+ν and D0→π−μ+ν form factors

Author: V. Arena, D. Lopes Pegna, Luigi Benussi, M. Mezzadri, J. E. Moore, A. E. Kreymer, S. Barberis, D. Y. Kim, A. Paris, G. Boca, R. Mitchell, Gabriele Gianini, C. Uribe, J. E. Ramirez, L. Edera, James E Wiss, S. Erba, F. Leveraro, Germano Bonomi, C. Pontoglio, Daniele Pedrini, John Perry Cumalat, M. M. Merlo, Stefano Bianco, Kevin Stenson, Paul Sheldon, B. O'Reilly, M. Sheaff, M. H.L.S. Wang, A. Rahimi, A. Cerutti, P. Inzani, L. Cinquini, Y. Zhang, S. Carrillo, L. Agostino, James R. Wilson, P. D'Angelo, G. Liguori, Cristina Riccardi, Luigi Moroni, J. Magnin, M. Boschini, H. Mendez, P. H. Garbincius, D. Pantea, Sandra Malvezzi, Dario Menasce, J. M. De Miranda, A. M. Lopez, A. Kryemadhi, F. Vázquez, T. F. Davenport, F. L. Fabbri, A. Sanchez-Hernandez, J. S. Kang, Marco A. Reyes, J. C. Anjos, F. Prelz, A. C. dos Reis, J. M. Link, M. S. Nehring, P. M. Yager, I. Segoni, E. Cuautle, Michael S. Webster, R. Kutschke, S. Sala, Robert Gardner, K. B. Lee, P. H. Kasper, Marco Rovere, Y. S. Chung, A. Zallo, Iuri Muniz Pepe, M. Bertani, T. Handler, Ignacio Bediaga, Harry Cheung, Paolo Dini, M. Hosack, A. Massafferri, E. Casimiro, E. Luiggi, H. Hernandez, J. N. Butler, Gianluca Alimonti, I. Gaines, B. R. Ko, J. Quinones, W. E. Johns, M. DiCorato, C. Cawlfield, H. Park, Eric Wayne Vaandering, L. A. Garren, Kyung-Suk Cho, D. Engh, Erik Gottschalk, J. W. Kwak, S. P. Ratti, A. A. Machado, G. Chiodini, C. Göbel, Paolo Vitulo, and Erica Polycarpo
Subjects: Physics, Nuclear and High Energy Physics, Form factor (quantum field theory), Lattice QCD, Atomic physics, Large sample
Abstract: Using a large sample of D 0 → K − μ + ν and D 0 → π − μ + ν decays collected by the FOCUS photoproduction experiment at Fermilab, we present new measurements of the q 2 dependence for the f + ( q 2 ) form factor. These measured f + ( q 2 ) form factors are fit to common parameterizations such as the pole dominance form and compared to recent unquenched Lattice QCD calculations. We find m pole = 1.93 ± 0.05 ± 0.03 GeV / c 2 for D 0 → K − μ + ν and m pole = 1.91 −0.15 +0.30 ± 0.07 GeV / c 2 for D 0 → π − μ + ν and f − ( K ) ( 0 ) / f + ( K ) ( 0 ) = − 1.7 −1.4 +1.5 ± 0.3 .
Published: 2005

33. Measurement of masses and branching ratios of Ξc+ and Ξc0 baryons

Author: A. Go, Y. Chao, G. R. Moloney, H. R. Khan, M. Rozanska, O. Nitoh, V.N. Zhilich, Hiroaki Aihara, S. Semenov, K. Inami, Rainer Stamen, A. Somov, W. A. Mitaroff, Kazuo Abe, Y. Asano, S. Okuno, B. D. Yabsley, L. Hinz, S. Nishida, H. Ozaki, N. Soni, T. Nakadaira, Gobinda Majumder, Manoranjan Dash, A. Ishikawa, K. Kinoshita, A. Bay, J. Ying, H. Miyata, C. H. Wang, Y. Hoshi, T. Tsukamoto, Y. Sakai, T. Schietinger, Y. Teramoto, T. Okabe, A. Chuvikov, Y. Yamashita, J. S. Lange, K. Hayasaka, T. Iijima, P. Krokovny, I. Bizjak, M. Nakao, J. H. Kang, G. S. Varner, Y. J. Kwon, E. Nakano, O. Schneider, S. Fratina, K. Ueno, A. Garmash, M. Starič, J. Dalseno, S. Cole, T. E. Browder, T. Nagamine, Zhenyu Zhang, S. K. Choi, C. C. Wang, M. Iwasaki, Byung Gu Cheon, L. S. Peak, R. Itoh, Y. Ushiroda, M. Danilov, K. S. Park, Q. L. Xie, C. C. Kuo, S. L. Olsen, J. Haba, T. Tsuboyama, T. Lesiak, G. Gokhroo, T. J. Gershon, A. Yamaguchi, S. Ogawa, S. Uno, R. Chistov, A. Bondar, S. W. Lin, Noriaki K. Sato, G. Leder, S. Korpar, Jolanta Brodzicka, Jie Zhang, T. Matsumoto, H. Kawai, F. Mandl, H. Park, U. Bitenc, K. Tamai, A. Bozek, S. R. Hou, T. Kawasaki, Suneel Kumar, S. Stanič, M. H. Tanaka, Yasushi Nagasaka, T. Sumiyoshi, A. Chen, Masashi Hazumi, N. Tamura, W. Ostrowicz, M. Bračko, Hiroyuki Sagawa, N. Parslow, C. C. Zhang, Y. Choi, H. Shibuya, D. Žontar, V. Eiges, A.S. Kuzmin, S. Uehara, N. Katayama, S. Bahinipati, A. Imoto, J. S. Kang, A. M. Bakich, Z. Natkaniec, T. Ohshima, I. Adachi, S. Villa, N. Gabyshev, J. MacNaughton, Y. Yusa, S. Eidelman, L. E. Piilonen, Kevin Varvell, A. Matyja, W. S. Hou, and Long Zhang
Subjects: Charmed baryons, Physics, Nuclear physics, Baryon, Nuclear and High Energy Physics, KEKB, Electron–positron annihilation, Mass spectrum, Analytical chemistry, Branching (polymer chemistry)
Abstract: We report a measurement of the Ξ c + and Ξ c 0 baryon masses, and the branching ratios for various Ξ c decays, using 140 fb −1 of data collected by the Belle experiment at the KEKB e + e − collider. The mass splitting m Ξ c 0 − m Ξ c + is found to be 2.9 ± 0.5 MeV / c 2 ; this measurement is three times as precise as the current world average. We measure the branching ratios Γ ( Ξ c + → Λ K − π + π + ) / Γ ( Ξ c + → Ξ − π + π + ) = 0.32 ± 0.03 ± 0.02 and Γ ( Ξ c 0 → p K − K − π + ) / Γ ( Ξ c 0 → Ξ − π + ) = 0.33 ± 0.03 ± 0.03 , with improved precision, and measure Γ ( Ξ c + → p K S 0 K S 0 ) / Γ ( Ξ c + → Ξ − π + π + ) = 0.087 ± 0.016 ± 0.014 , Γ ( Ξ c 0 → Λ K − π + ) / Γ ( Ξ c 0 → Ξ − π + ) = 1.07 ± 0.12 ± 0.07 and Γ ( Ξ c 0 → Λ K S 0 ) / Γ ( Ξ c 0 → Ξ − π + ) = 0.21 ± 0.02 ± 0.02 for the first time.
Published: 2005

34. Measurement of the ratio of the vector to pseudoscalar charm semileptonic decay rate Γ(D+→K¯*0μ+νμ)/Γ(D+→K¯0μ+νμ)

Author: Marco A. Reyes, Paolo Dini, Luigi Moroni, Michael Wang, M. Hosack, E. Casimiro, L. Edera, P. M. Yager, A. C. dos Reis, Gabriele Gianini, S. Sala, Paul Sheldon, A. M. Lopez, I. Gaines, P. H. Kasper, D. Pantea, M. DiCorato, J. C. Anjos, James E Wiss, F. Leveraro, S. Carrillo, M. Boschini, C. Pontoglio, P. H. Garbincius, J. M. De Miranda, A. D. Bryant, D. Engh, T. F. Davenport, Michael S. Webster, S. Barberis, Kevin Stenson, Kyung-Suk Cho, L. Bertani, Robert Gardner, Daniele Pedrini, James R. Wilson, A. Sanchez-Hernandez, K. B. Lee, A. Rahimi, A. Cerutti, G. Liguori, John Perry Cumalat, Marco Giammarchi, Sandra Malvezzi, L. Cinquini, P. Inzani, R. Mitchell, A. Paris, D. Y. Kim, Gianluca Alimonti, F. Vázquez, F. Prelz, Harry Cheung, I. Segoni, E. Cuautle, A. Zallo, W. E. Johns, J. S. Kang, S. Erba, E. Luiggi, H. Hernandez, H. Mendez, A. E. Kreymer, C. Uribe, J. E. Ramirez, Stefano Bianco, J. N. Butler, M. Sheaff, Cristina Riccardi, M. Mezzadri, J. M. Link, Iuri Muniz Pepe, F. L. Fabbri, Erik Gottschalk, Eric Wayne Vaandering, B. R. Ko, A. A. Machado, M. S. Nehring, L. A. Garren, C. Cawlfield, T. Handler, A. Massafferri, J. Magnin, Dario Menasce, V. Arena, D. Lopes Pegna, G. Chiodini, Luigi Benussi, C. Göbel, H. Park, Paolo Vitulo, G. Boca, Marco Rovere, Erica Polycarpo, Germano Bonomi, J. W. Kwak, S. P. Ratti, B. O'Reilly, Y. Zhang, P. D'Angelo, J. Quinones, I. Bediaga, M. M. Merlo, L. Agostino, A. Kryemadhi, R. Kutschke, and Y. S. Chung
Subjects: Physics, Nuclear physics, Hadronic decay, Pseudoscalar, Semileptonic decay, Nuclear and High Energy Physics, Branching fraction, Analytical chemistry, Particle Data Group
Abstract: Using a high statistics sample of photo-produced charm particles from the FOCUS experiment at Fermilab, we report on the measurement of the ratio of semileptonic rates Γ ( D + → K π μ + ν μ ) / Γ ( D + → K ¯ 0 μ + ν μ ) = 0.625 ± 0.045 ± 0.034 . Allowing for the Kπ S-wave interference measured in [J.M. Link, et al., FOCUS Collaboration, Phys. Lett. B 544 (2002) 89], we extract the vector to pseudoscalar ratio Γ ( D + → K ¯ * 0 μ + ν μ ) / Γ ( D + → K ¯ 0 μ + ν μ ) = 0.594 ± 0.043 ± 0.033 and the ratio Γ ( D + → K ¯ 0 μ + ν μ ) / Γ ( D + → K − π + π + ) = 1.019 ± 0.076 ± 0.065 . Our results show a lower ratio for Γ ( D → K * l ν ) / Γ ( D → K l ν ) than has been reported recently and indicate the current world average branching fractions for the decays D + → K ¯ 0 ( μ + , e + ) ν μ , e are low. Using the world average B ( D + → K − π + π + ) [K. Hagiwara, et al., Particle Data Group Collaboration, Phys. Rev. D 66 (2002) 010001, and 2003 partial update for edition 2004 ( http://pdg.lbl.gov )] we extract B ( D + → K ¯ 0 μ + ν ) = ( 9.27 ± 0.69 ± 0.59 ± 0.61 ) % .
Published: 2004

35. New measurements of the D→μν form factor ratios

Author: D. Y. Kim, D. Engh, I. Segoni, E. Cuautle, Erik Gottschalk, S. Carrillo, Marco A. Reyes, J. M. De Miranda, J. S. Kang, T. F. Davenport, Luigi Benussi, A. Paris, R. Kutschke, M. DiCorato, Luigi Moroni, H. Mendez, Y. Zhang, S. Sala, Y. S. Chung, Daniele Pedrini, S. Erba, Kyung-Suk Cho, J. Magnin, M. Boschini, A. C. dos Reis, John Perry Cumalat, A. Rahimi, A. Cerutti, Marco Giammarchi, Dario Menasce, A. Zallo, W. E. Johns, P. Inzani, P. H. Garbincius, L. Agostino, L. Cinquini, Sandra Malvezzi, L. Edera, P. M. Yager, H. Hernandez, Harry Cheung, A. Kryemadhi, F. Prelz, A. M. Lopez, Germano Bonomi, Gianluca Alimonti, Paolo Dini, A. Sanchez-Hernandez, G. Boca, A. E. Kreymer, V. Arena, J. E. Ramirez, K. H. Chang, Paul Sheldon, C. Uribe, G. Chiodini, J. M. Link, James E Wiss, K. B. Lee, M. Hosack, E. Casimiro, Gabriele Gianini, K. S. Park, F. Leveraro, B. O'Reilly, B. R. Ko, C. Göbel, Stefano Bianco, C. Pontoglio, Paolo Vitulo, S. Barberis, M. Sheaff, J. Quinones, Michael S. Webster, Cristina Riccardi, M. M. Merlo, James R. Wilson, G. Liguori, Kevin Stenson, M. Mezzadri, J. N. Butler, J. C. Anjos, Robert Gardner, D. Pantea, Marco Rovere, W. Xiong, H. K. Park, Iuri Muniz Pepe, F. Vázquez, I. Gaines, P. H. Kasper, P. D'Angelo, J. W. Kwak, S. P. Ratti, M. S. Nehring, Fabrizio Fabbri, I. Bediaga, C. Cawlfield, Eric Wayne Vaandering, L. A. Garren, R. Mitchell, T. Handler, and A. Massafferri
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Form factor (quantum field theory), Fermilab, Focus (optics), Large sample
Abstract: Using a large sample of D + → K − π + μ + ν decays collected by the FOCUS photoproduction experiment at Fermilab, we present new measurements of two semileptonic form factor ratios: r v and r 2 . We find r v =1.504±0.057±0.039 and r 2 =0.875±0.049±0.064. Our form factor results include the effects of the s -wave interference discussed in Phys. Lett. B 535 (2002) 43.
Published: 2002

36. New measurements of the and branching ratios

Author: I. Gaines, J. Magnin, Dario Menasce, J. S. Kang, Kyung-Suk Cho, C. Cawlfield, S. Carrillo, J. C. Anjos, Germano Bonomi, Stefano Bianco, Sandra Malvezzi, Cristina Riccardi, W. Xiong, A. M. Lopez, K. B. Lee, J. M. De Miranda, T. F. Davenport, Harry Cheung, John Perry Cumalat, Paolo Dini, Marco Giammarchi, M. Hosack, E. Casimiro, J. W. Kwak, S. P. Ratti, F. Prelz, J. N. Butler, L. Cinquini, James E Wiss, Daniele Pedrini, D. Pantea, F. Leveraro, H. Mendez, Agustín Cobos Cerutti, K. H. Chang, D. Engh, M. Boschini, P. H. Garbincius, D. Y. Kim, B. O'Reilly, B. R. Ko, A. Sanchez-Hernandez, P. Inzani, Y. Zhang, J. Quinones, V. Arena, A. E. Kreymer, Luigi Benussi, L. Edera, A. Paris, S. Barberis, Luigi Moroni, P. M. Yager, C. Uribe, J. E. Ramirez, Paul Sheldon, J. M. Link, M. DiCorato, W. E. Johns, I. Segoni, A. C. dos Reis, E. Cuautle, F. L. Fabbri, Michael S. Webster, P. H. Kasper, H. Park, Robert Gardner, Marco Rovere, M. S. Nehring, James R. Wilson, G. Liguori, F. Vázquez, R. Kutschke, A. Rahimi, Eric Wayne Vaandering, Y. S. Chung, P. D'Angelo, A. Zallo, M. Sheaff, L. A. Garren, T. Handler, H. Hernandez, A. Massafferri, Iuri Muniz Pepe, M. M. Merlo, L. Agostino, R. Mitchell, A. Kryemadhi, Gabriele Gianini, K. S. Park, C. Pontoglio, Kevin Stenson, Erik Gottschalk, S. Erba, Gianluca Alimonti, G. Chiodini, C. Göbel, Paolo Vitulo, G. Boca, S. Sala, Ignacio Bediaga, M. Mezzadri, and Marco A. Reyes
Subjects: Physics, Nuclear and High Energy Physics, Nuclear magnetic resonance, Analytical chemistry, Large sample
Abstract: Using a large sample of charm semileptonic decays collected by the FOCUS photoproduction experiment at Fermilab, we present new measurements of two semileptonic branching ratios. We obtain values of Γ(D + → K ∗0 μ + ν) Γ(D + →K − π + π + ) =0.602±0.010( stat )±0.021( sys ) and Γ(D s + →φμ + ν) Γ(D s + →φπ + ) =0.54±0.033( stat )±0.048( sys ) . Our D + → K ∗0 μ + ν result includes the effects of the s-wave interference discussed in Phys. Lett. B 535 (2002) 43.
Published: 2002

37. Evidence for new interference phenomena in the decay D+→K−π+μ+ν

Author: A. E. Kreymer, C. Uribe, D. Engh, W. Xiong, V. Arena, R. Mitchell, M. Boschini, Eric Wayne Vaandering, Luigi Benussi, D. Pantea, P. H. Garbincius, A. Sanchez-Hernandez, K. B. Lee, S. Erba, G. Chiodini, S. Sala, L. A. Garren, R. Kutschke, Sandra Malvezzi, J. M. Link, J. W. Kwak, S. P. Ratti, M. Mezzadri, Gianluca Alimonti, B. R. Ko, P. D'Angelo, Y. S. Chung, H. Mendez, C. Göbel, J. Quinones, Harry Cheung, Paolo Vitulo, C. Cawlfield, F. Prelz, Erik Gottschalk, Kyung-Suk Cho, J. Magnin, Dario Menasce, G. Boca, H. Hernandez, I. Segoni, Paolo Dini, Stefano Bianco, I. Gaines, E. Cuautle, S. Carrillo, T. Handler, A. Massafferri, Cristina Riccardi, C. Rivera, P. H. Kasper, M. Hosack, E. Casimiro, Marco Giammarchi, I. Bediaga, M. Sheaff, D. Y. Kim, M. DiCorato, L. Milazzo, Germano Bonomi, M. M. Merlo, Gabriele Gianini, H. K. Park, Y. Zhang, P. M. Yager, James E Wiss, F. Leveraro, J. M. De Miranda, T. F. Davenport, J. N. Butler, C. Pontoglio, B. O'Reilly, A. M. Lopez, Iuri Muniz Pepe, Kevin Stenson, E. Montiel, L. Agostino, A. Kryemadhi, D. Olaya, L. Edera, A. Rahimi, J. E. Ramirez, James R. Wilson, G. Liguori, A. Zallo, F. Vázquez, F. L. Fabbri, Paul Sheldon, M. S. Nehring, Daniele Pedrini, S. Barberis, P. Inzani, W. E. Johns, Marco A. Reyes, L. Mendez, J. C. Anjos, John Perry Cumalat, J. S. Kang, L. Cinquini, A. Paris, Michael S. Webster, Robert Gardner, Marco Rovere, Luigi Moroni, and A. C. dos Reis
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Amplitude, Pion, Mass distribution, Resonance, High Energy Physics::Experiment, Charm (quantum number), Fermilab, Interference (wave propagation), Spin-½
Abstract: Using a large sample of charm semileptonic decays collected by the FOCUS photoproduction experiment at Fermilab, we present evidence for a small, even spin K−π+ amplitude that interferes with the dominant K ∗0 component in the D+→K−π+μ+ν final state. Although this interference significantly distorts the D+→K−π+μ+ν decay angular distributions, the new amplitude creates only a very small distortion to the observed kaon pion mass distribution when integrated over the other kinematic variables describing the decay. Our data can be described by K ∗0 interference with either a constant amplitude or broad spin zero resonance.
Published: 2002

38. Measurement of (→Dℓ) and determination of |V

Author: Hiroyuki Sagawa, G. Leder, D. W. Kim, Y. Watanabe, H. Kichimi, K. Tamai, M. E. Sevior, T. Tsuboyama, Masashi Hazumi, Shaji Kumar, J. L. Rodriguez, H. Miyake, M. Yamauchi, A. Murakami, Y. Zheng, S. Matsumoto, M. Satapathy, N. Kawamura, R. Abe, M. Rozanska, H. Palka, L. E. Piilonen, K. S. Park, L. S. Peak, Y. Ushiroda, R. Guo, S. Uehara, Shih-Chieh Hsu, M. Tanaka, I. Higuchi, J. Haba, J. W. Nam, S. Behari, S. Yanaka, A. Garmash, Hirokazu Ishino, T. Iijima, D. J. Jackson, S. Noguchi, Byoung Sup Ahn, D. Liventsev, H. K. Jang, R. Kulasiri, T. Aushev, T. Hojo, T. Nakadaira, N. Katayama, I. Adachi, S. Y. Suzuki, H. J. Kim, J. P. Perroud, Y. Sakai, S. R. Hou, H. Kawai, B. C. K. Casey, Yasushi Nagasaka, E.J. Prebys, S. N. Tovey, S. K. Swain, J. Zhang, R. Itoh, R. Chistov, F. Fang, K. Sumisawa, Kevin Varvell, D. Žontar, A. Bondar, S. Korpar, V.N. Zhilich, M. Takita, Masashi Yokoyama, Y. Ban, Tsukasa Aso, Ascelin Gordon, H. Aihara, E. M. Heenan, Y. Chao, B. Shwartz, Y. Iwasaki, Chikara Fukunaga, J. B. Singh, Y. Tanaka, S. K. Choi, A. Kuzmin, S. Semenov, Y. J. Kwon, Y. Igarashi, Hiroshi Sakamoto, K. Miyabayashi, S. Ogawa, Ho Kim, Kyo Yoshida, Hirokazu Ikeda, J. G. Wang, Takahiko Matsubara, T. Sumiyoshi, S. E. Vahsen, T. Tomura, L. Y. Dong, C. W. Park, E. Won, N. Tamura, T. J. Gershon, T. Hokuue, S. K. Kim, J. Yashima, K. Senyo, K. Ueno, T. Kawasaki, S. Stanič, Makoto Tomoto, N.I. Root, Heejong Kim, Kazunori Hanagaki, K. Neichi, Y. Mikami, Hitoshi Yamamoto, M. Nakao, K. Trabelsi, J. S. Kang, P. Chang, T. Takahashi, V. M. Aulchenko, H. Fujii, O. Nitoh, J. Tanaka, Masaki Fukushima, Shigeki Mori, Kazuo Abe, H. Ozaki, Y. Asano, P. Kapusta, S. Okuno, Y. Yusa, J. MacNaughton, W. S. Hou, F. Handa, M. D. Peters, T. Abe, Y. Choi, M. Yamaga, Takuya Higuchi, T. Hara, S. H. Lee, A. Ishikawa, Y. Teramoto, A. M. Bakich, Bruce Yabsley, Elzbieta Banas, T. Okabe, N. C. Hastings, Y. Yamashita, F. Takasaki, Z. Natkaniec, T. Ohshima, H. Konishi, T. Nagamine, S. Nishida, H. C. Huang, P. Križan, T. Nozaki, S. Schrenk, W. Ostrowicz, E. Nakano, C. H. Wang, N. Gabyshev, You-Jin Yuan, A. Yamaguchi, Hyunwoo Kim, C. C. Zhang, H. Shibuya, V. Eiges, Rong-Shyang Lu, J. H. Kang, J. Ryuko, T. E. Browder, Hiroyuki Iwasaki, T. Tsukamoto, A. Sugiyama, C.W. Everton, Byung Gu Cheon, K. Hara, K. Hoshina, T. Mori, S. Uno, S. Eidelman, P. Pakhlov, A. Satpathy, S. L. Olsen, H. Park, A. Bozek, T. Matsumoto, M. Z. Wang, K. Kinoshita, A. Drutskoy, P. Krokovny, Y. Nagashima, G. N. Taylor, J. S. Lange, H. Hayashii, K. Inami, Changwon Park, G. R. Moloney, Y. Unno, P. Jalocha, H. W. Zhao, H. Hamasaki, Yasuhiko Yamada, H. Miyata, Prafulla Kumar Behera, Y. Hoshi, T.H. Kim, C. C. Wang, and M. Akatsu
Subjects: Physics, Nuclear and High Energy Physics, Muon, KEKB, Branching fraction, Cabibbo–Kobayashi–Maskawa matrix, Electron–positron annihilation, Analytical chemistry, Form factor (quantum field theory), Resonance, Electron, Atomic physics
Abstract: We present a measurement of the branching fraction for the semileptonic B decay B 0 →D + l − ν , where l− can be either an electron or a muon. We find Γ( B 0 →D + l − ν )=(13.79±0.76±2.51) ns −1 , and the resulting branching fraction B ( B 0 →D + l − ν )=(2.13±0.12±0.39)% , where the first error is statistical and the second systematic. We also investigate the B 0 →D + l − ν form factor and the implications of the result for |Vcb|. From a fit to the differential decay distribution we obtain the rate normalization |Vcb|FD(1)=(4.11±0.44±0.52)×10−2. Using a theoretical calculation of FD(1), the Cabibbo–Kobayashi–Maskawa matrix element |Vcb|=(4.19±0.45±0.53±0.30)×10−2 is obtained, where the last error comes from the theoretical uncertainty of FD(1). The results are based on a data sample of 10.2fb−1 recorded at the ϒ(4S) resonance with the Belle detector at the KEKB e+e− collider.
Published: 2002

39. Measurement of natural widths of Σ0 and Σ++ baryons

Author: Y. Zhang, V. Arena, L. A. Garren, E. Montiel, Michael S. Webster, Robert Gardner, W. Xiong, Marco Rovere, D. Olaya, J. W. Kwak, S. P. Ratti, L. Méndez, D. Engh, B. R. Ko, Paolo Dini, M. Hosack, E. Casimiro, S. Erba, G. Boca, Luigi Moroni, Sandra Malvezzi, James E Wiss, F. Leveraro, Paul Sheldon, D. Pantea, A. C. dos Reis, Germano Bonomi, F. Prelz, R. Mitchell, Hyangkyu Park, M. DiCorato, L. Milazzo, Gianluca Alimonti, S. Sala, J. Magnin, Dario Menasce, B. O'Reilly, J. M. Link, Erik Gottschalk, P. M. Yager, A. E. Kreymer, Stefano Bianco, K. Cho, C. Uribe, C. Rivera, Cristina Riccardi, W. E. Johns, James R. Wilson, M. M. Merlo, G. Liguori, P. D'Angelo, S. Barberis, D. Y. Kim, Daniele Pedrini, K. B. Lee, F. Vázquez, Harry Cheung, P. Inzani, R. Kutschke, F. L. Fabbri, J. C. Anjos, Y. S. Chung, J. S. Kang, M. S. Nehring, H. Hernandez, John Perry Cumalat, Gabriele Gianini, C. Cawlfield, L. Agostino, L. Cinquini, A. Kryemadhi, A. Zallo, C. Pontoglio, Kevin Stenson, I. Gaines, Marco A. Reyes, M. Boschini, J. Quinones, P. H. Garbincius, Ignacio Bediaga, S. Carrillo, M. Sheaff, A. Sanchez-Hernandez, G. Chiodini, T. Handler, C. Göbel, A. Massafferri, Paolo Vitulo, J. M. De Miranda, Marco Giammarchi, J. N. Butler, M. Mezzadri, L. Edera, T.F. Davenport, Iuri Muniz Pepe, J. E. Ramirez, H. Mendez, I. Segoni, E. Cuautle, P. H. Kasper, A. Rahimi, A. Paris, A. M. Lopez, and Eric Wayne Vaandering
Subjects: Physics, Baryon, Nuclear physics, Nuclear and High Energy Physics, Particle physics
Abstract: In this Letter we present a measurement of the natural widths of Σ c 0 and Σ c ++ . Using data from the FOCUS experiment, we find Γ ( Σ c 0 )=1.55 +0.41 −0.37 ±0.38 MeV/ c 2 and Γ ( Σ c ++ )=2.05 +0.41 −0.38 ±0.38 MeV/ c 2 . The first errors are statistical, the second systematic. These results are obtained with a sample of 913 Σ c 0 →Λ c + π − decays and 1110 Σ c ++ →Λ c + π + decays. These results are compared with recent theoretical predictions.
Published: 2002

40. Measurement ofKS0andK*0inp+p,d+Au, and Cu + Cu collisions atsNN=200 GeV

Author: P. Sett, Jen-Chieh Peng, J. G. Rubin, Martin Purschke, C. A. Aidala, C. Baumann, Y. Ikeda, D. Reynolds, S. Dairaku, M. Mitrovski, Takafumi Niida, Inkyu Park, J. G. Boissevain, M. S. Daugherity, C. P. Singh, Xiong Wang, C. Silvestre, Serpil Yalcin, D. Kotchetkov, Pawan Kumar Netrakanti, Z. Conesa del Valle, M. K. Dayananda, Masashi Kaneta, B. M. Johnson, O. Zaudtke, Dong Jo Kim, A. Morreale, Prakhar Garg, Z. Fraenkel, B. Bannier, V. Khachatryan, R. Akimoto, M. Virius, E. T. Atomssa, R. J. Petti, A. Isupov, C. Suire, Aaron Angerami, R. A. Soltz, R. K. Choudhury, C. Pinkenburg, Marisilvia Donadelli, S. Campbell, J. D. Orjuela Koop, G. S. Kyle, A. Veicht, K. Dehmelt, C. H. Chen, J. Sziklai, G. Roche, James Alexander, C. L. Woody, A. Berdnikov, V. Bumazhnov, M. P. Comets, D. Black, Y. J. Mao, S. Kametani, W. A. Zajc, L. Xue, V. Baublis, A. Denisov, Yuki Watanabe, M. Wysocki, M. Vargyas, A. Manion, Brian Cole, J. H. Kang, T. L. Thomas, Sung Keun Park, M. Grosse Perdekamp, F. Giordano, M. E. Connors, V. Cianciolo, B. Meredith, B. Azmoun, Ryugo S. Hayano, Y. Riabov, J. S. Haggerty, A. Caringi, A. Romana, A. Král, Kenta Shigaki, M. J. Kweon, I. Ravinovich, R. Averbeck, Byung-Sik Hong, M. Nguyen, A. S. Nyanin, Rachid Nouicer, Min Soo Kim, A. N. Zelenski, R. Tanabe, M. Proissl, V. S. Pantuev, Sergey Fokin, Petr Gallus, Y. Nagata, M. Gonin, N. N. Ajitanand, A. Bazilevsky, Atsushi Takahara, A. J. Miller, T. Horaguchi, Philippe Rosnet, Y. S. Lai, M. Rosati, R. S. Towell, Prashant Shukla, S. F. Pate, T. Ichihara, Osamu Jinnouchi, Matthew G. Reuter, Takahiro Fusayasu, M. Oka, P. Kline, K. S. Lee, Alexander Milov, I. Nakagawa, Young-Ki Kim, T. Engelmore, N. Novitzky, G. D. N. Perera, Takahiro Nakamura, A. Sukhanov, K. Kurita, H. Pereira, Y. Morino, Gary Grim, K. V. Dharmawardane, K. A. Drees, J. L. Charvet, Alexandre Lebedev, D. M. Lee, Maya Hachiya Shimomura, R. S. Hollis, Y. I. Makdisi, P. Liebing, I. V. Sourikova, O. Drapier, Frank Ellinghaus, E. R. Kinney, D. McGlinchey, Susumu Oda, C. O. Kim, M. Bai, I. Garishvili, Akio Kiyomichi, F. Wei, J. Gosset, H. Iinuma, A. P.T. Palounek, A. A. Vinogradov, Ke. Nakamura, M. Beaumier, K. S. Joo, D. P. Morrison, H. Al-Bataineh, J. A. Key, S. P. Sorensen, S. K. Park, Dylan Walker, A. Durum, J. Klatsky, O. Chvala, X. He, O. O. Omiwade, J. Hamblen, T. E. Miller, Alexander Malakhov, K. Kihara, V. E. Semenov, J. Zimányi, Tatsuya Chujo, Y. Onuki, K. Yamaura, S. Yokkaichi, J. G. Lajoie, H. A. Gustafsson, A. Hadj Henni, M. Alfred, T. Hachiya, M. Ouchida, N. Means, J. Asai, S. Whitaker, Shingo Sakai, Inseok Yoon, Zhiying You, R. Bennett, M. Kawashima, N. Kurihara, J. Bryslawskyj, Jennifer E. Perry, Jiangyong Jia, Y. Goto, D. Kleinjan, D. Ivanishchev, T. Jones, I. Tserruya, Peter Christiansen, D. Winter, S. Afanasiev, A. Ster, N. Feege, Y. Aramaki, V. Peresedov, Jan Rak, R. Lacey, C. Zhang, M. Jezghani, Yu. Efremenko, S. Esumi, P. Ružička, R. Granier de Cassagnac, D. Silvermyr, J. Koster, R. Ichimiya, A. Kravitz, A. Adare, A. Enokizono, M. Finger, Hiroaki Ohnishi, Jongmin Lee, D. Yu Peressounko, Viktor Riabov, V. Papavassiliou, Sébastien Gadrat, J. Newby, Beomkyu Kim, Wei Xie, T. Sumita, A. V. Kazantsev, C. Y. Chi, T. Murakami, K. Okada, K. Das, Hongfang Liu, D. E. Fields, S. Batsouli, H. Masui, A. K. Dubey, V. Singh, Y. Fukao, A. Shevel, Rushan Han, B. Komkov, E. P. Hartouni, Herve Borel, D. Lynch, M. J. Tannenbaum, O. Dietzsch, L. S. Zolin, Robert F. Hobbs, W. J. Park, P. Tarján, H. En'yo, M. J. Leitch, B. V. Jacak, P. Chung, A. A. Bickley, A. Mwai, B. Love, L. Ding, Y. Nakamiya, A. Taketani, H. Valle, M. Kofarago, I. J. Choi, B. Xia, Dipanwita Dutta, Christopher Rosen, M. Kurosawa, T. Koblesky, D. Hornback, N. S. Bandara, S. Butsyk, K. S. Sim, V. Dzhordzhadze, Saskia Mioduszewski, P. D. Barnes, A. Yanovich, M. Naglis, Dennis Perepelitsa, D. Roach, K. M. Kijima, M. McCumber, T. Tabaru, C. Gal, V. L. Rykov, T. Dahms, A. G. Litvinenko, Junji Tojo, Y. Kwon, Vladimir Samsonov, Julia Velkovska, T. Hester, H. Torii, B. K. Schmoll, Debashish Pal, S. Sawada, M. Towell, J. Ying, A. Franz, Tsutomu Mibe, H. Nakagomi, T. Hoshino, Y. Gu, M. A. L. Leite, R. Yang, H. Hiejima, A. Taranenko, Senta Greene, Christine Nattrass, T. Todoroki, N. Riveli, A. Sexton, Xingguo Li, S. Taneja, L. Tomášek, A. T. Basye, B. E. Norman, Susumu Sato, W. S. Emam, A. Datta, Kazushi Miki, S. J. Jeon, B. Fadem, E. O'Brien, P. Mikeš, H. Asano, K. B. Lee, J. Hanks, Tamas Ferenc Csorgo, A. Kozlov, R. Seto, K. Haruna, K. Imai, D. Sharma, M. I. Nagy, D. Watanabe, A. Kim, D. Mukhopadhyay, Brajesh K. Singh, S. Rembeczki, J. Jin, K. Karatsu, E. M. Takagui, S. H. Lim, J. L. Nagle, I. Danchev, S. Takagi, K. N. Barish, A. Glenn, Anne Marie Sickles, B. Schaefer, E. Joo, M. D. Malik, E. Vznuzdaev, Eunja Kim, Masayasu Ishihara, M. Stepanov, L. Patel, John Hill, M. K. Lee, J. S. Bok, T. C. Awes, Ajit Kumar Mohanty, Hari Guragain, G. Baksay, S. Sano, R. Belmont, J. S. Kapustinsky, L. Aphecetche, H. Ozaki, T. A. Shibata, C. L. Silva, J. S. Kang, Toru Sugitate, G. R. Young, S. Tarafdar, J. H. Do, M. L. Brooks, T. Sato, Kyoichiro Ozawa, T. Liška, A. Dion, Jun Kikuchi, L. D. Isenhower, V. Babintsev, Tadaaki Isobe, Johannes Peter Wessels, Eva Haslum, B. Lenzi, J. Chiba, Alice Mignerey, L. D'Orazio, S. Miyasaka, François Fleuret, X. Jiang, P. L. McGaughey, Z. Rowan, M. Mendoza, S. N. White, M. Chiu, Deepa Thomas, A. Meles, V-N. Tram, S. Beckman, Hiroyuki Sako, N. Grau, S. W. Nam, D. Kawall, Takao Sakaguchi, A. Sen, M. Leitgab, D. Isenhower, Minghui Liu, C. Klein-Boesing, A. D. Frawley, M. Heffner, Kenneth Francis Read, H. Themann, Motoi Inaba, V. I. Kochetkov, R. M. Wright, A. Toia, T. Moon, M. Sarsour, Mate Csanad, A. Iordanova, S. Y. Han, L. Mašek, S. Huang, J. Murata, S. H. Aronson, Gerd Joachim Kunde, M. Nihashi, I. Shein, W. Holzmann, David D'Enterria, H. Kanou, Taku Gunji, H. Gong, J. Seele, K. Sedgwick, R. P. Pisani, M. Patel, F. Kajihara, Alberto Baldisseri, Mihael Makek, A. Deshpande, B. Sahlmueller, H. Delagrange, M. N. Wagner, S. Zhou, Y. J. Kim, Y. Watanabe, J. T. Mitchell, S. D. Rolnick, I. Younus, R. Seidl, Vladislav Manko, A. Soldatov, M. Slunečka, S. Hasegawa, A. Kiss, S. Belikov, Z. Yasin, Henner Buesching, Steve Edwards, Marcus Hohlmann, C. Vale, L. A. Linden Levy, B. S. Chang, A. Timilsina, J. Klay, K. O. Eyser, A. K. Purwar, K. Fujiwara, Y. L. Yamaguchi, F. Matathias, Kensuke Homma, E. Richardson, S. Mizuno, P. Constantin, S. Chernichenko, B. Bassalleck, M. Konno, H. W. Van Hecke, S. Bathe, Agneta Oskarsson, Y. Berdnikov, S. Wolin, R. Pak, S. H. Lee, Y. Akiba, C. McKinney, M. Mishra, S. Nagamiya, Vaclav Vrba, Klaus Johannes Reygers, N. Kamihara, Rui Wei, R. Armendariz, N. Apadula, C. Oakley, A. Drees, Y. Imazu, J. Kubart, Steven E. Skutnik, H. Qu, Hideki Hamagaki, K. Aoki, G. David, K. I. Hahn, K. Watanabe, C. A. Ogilvie, K. Shoji, M. Tomášek, T. K. Hemmick, P. W. Stankus, J. M. Durham, Yasuo Miake, P. Montuenga, C. R. Cleven, K. DeBlasio, L. Kochenda, M. Issah, C. Haegemann, Y. Inoue, T. Kempel, R. Pinson, K. Sakashita, D. Kotov, J. Egdemir, D. S. Jumper, Charles Maguire, Jason Kamin, S. P. Stoll, Kiyoshi Tanida, E. Kistenev, P. Lichtenwalner, H. Harada, J. Sun, H. Pei, S. S.E. Rosendahl, G. Bunce, H. J. Kim, A. Churyn, M. B. Deaton, D. Jouan, Y. Tanaka, E. Mannel, Nagahiro Saito, H. J. Moon, F. Staley, L. Baksay, R. Vértesi, J. E. Frantz, Dmitry Blau, E. J. Desmond, M. Togawa, E. Vazquez-Zambrano, J. Park, A. Rakotozafindrabe, M. Kasai, Y. Tsuchimoto, Y. Iwanaga, I. E. Yushmanov, Eun-Hee Kim, Alexei Khanzadeev, E. Stenlund, J. B. Choi, H. Sakata, Dipak Kumar Mishra, D. H. Kim, J. H. Bhom, T. V. Moukhanova, Zvi Hirsh Citron, H. Ge, K. Nakano, W. E. Sondheim, D. Ivanischev, K. Boyle, P. A. Rukoyatkin, and Tae-Yeon Lee
Subjects: Physics, Quark, Nuclear and High Energy Physics, Meson, Nuclear Theory, Strangeness, Phi meson, Baryon, Nuclear physics, Deuterium, High Energy Physics::Experiment, Impact parameter, Nuclear Experiment, Relativistic Heavy Ion Collider
Abstract: The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a systematic study of K-S(0) and K*(0) meson production at midrapidity in p + p, d + Au, and Cu + Cu collisions at root s(NN) = 200 GeV. The K-S(0) and K*(0) mesons are reconstructed via their K-S(0) -> pi(0)(-> gamma gamma) pi(0)(-> gamma gamma) and K*(0) -> K-+/-pi(-/+) decay modes, respectively. The measured transverse-momentum spectra are used to determine the nuclear modification factor of K-S(0) and K*(0) mesons in d + Au and Cu + Cu collisions at different centralities. In the d + Au collisions, the nuclear modification factor of K-S(0) and K*(0) mesons is almost constant as a function of transverse momentum and is consistent with unity, showing that cold-nuclear-matter effects do not play a significant role in the measured kinematic range. In Cu + Cu collisions, within the uncertainties no nuclear modification is registered in peripheral collisions. In central collisions, both mesons show suppression relative to the expectations from the p + p yield scaled by the number of binary nucleon-nucleon collisions in the Cu + Cu system. In the p(T) range 2-5 GeV/c, the strange mesons (K-S(0), K*(0)) similarly to the phi meson with hidden strangeness, showan intermediate suppression between the more suppressed light quark mesons (pi(0)) and the nonsuppressed baryons (p, (p) over bar). At higher transverse momentum, p(T) > 5 GeV/c, production of all particles is similarly suppressed by a factor of approximate to 2.
Published: 2014

41. Cross section and transverse single-spin asymmetry ofηmesons inp↑+pcollisions ats=200 GeVat forward rapidity

Author: M. Patel, E. Joo, M. Stepanov, F. Kajihara, C. L. Woody, A. Berdnikov, Hari Guragain, H. Pei, M. Vargyas, Alexei Khanzadeev, S. Tarafdar, E. Stenlund, S. Butsyk, J. B. Choi, A. Caringi, R. S. Towell, M. I. Nagy, H. J. Kim, I. Garishvili, F. Wei, D. Watanabe, V. S. Pantuev, M. Kofarago, Dipak Kumar Mishra, D. H. Kim, Petr Gallus, Prashant Shukla, M. Rosati, S. Zhou, Eva Haslum, M. D. Malik, E. Vznuzdaev, S. F. Pate, J. Hamblen, J. H. Bhom, I. V. Sourikova, S. D. Rolnick, Ke. Nakamura, K. O. Eyser, J. G. Rubin, T. V. Moukhanova, K. Okada, Y. Tanaka, Gary Grim, T. L. Thomas, E. Mannel, K. V. Dharmawardane, H. Al-Bataineh, J. A. Key, Charles Maguire, N. Feege, Y. Onuki, M. Sarsour, Mate Csanad, A. Iordanova, D. Reynolds, T. Sumita, C. Y. Chi, Kiyoshi Tanida, H. Ozaki, E. Kistenev, H. J. Moon, L. Baksay, H. En'yo, P. Lichtenwalner, M. J. Leitch, Dmitry Blau, J. Sun, S. Y. Han, L. Ding, Ryugo S. Hayano, J. Newby, Inkyu Park, Xiong Wang, E. J. Desmond, Ajit Kumar Mohanty, D. Roach, K. M. Kijima, Jiangyong Jia, Y. Goto, T. A. Shibata, C. L. Silva, T. Sato, Y. Riabov, Kenta Shigaki, M. Kurosawa, M. Nguyen, A. Dion, Z. Conesa del Valle, Dong Jo Kim, R. A. Soltz, E. Vazquez-Zambrano, Jan Rak, M. Nihashi, D. Ivanishchev, D. Hornback, V. Papavassiliou, Atsushi Takahara, A. S. Nyanin, Johannes Peter Wessels, K. A. Drees, Maya Hachiya Shimomura, R. S. Hollis, Hongfang Liu, D. E. Fields, R. Lacey, N. S. Bandara, Rachid Nouicer, A. N. Zelenski, M. Proissl, A. Taranenko, P. Sett, B. V. Jacak, Xingguo Li, Vladimir Samsonov, A. V. Kazantsev, D. Isenhower, Y. J. Kwon, M. Kasai, A. Toia, T. Moon, Y. Tsuchimoto, A. Veicht, D. Kleinjan, M. Grosse Perdekamp, M. Wysocki, I. Tserruya, R. Granier de Cassagnac, A. Adare, Christine Nattrass, Kazushi Miki, S. J. Jeon, Y. Iwanaga, R. P. Pisani, T. Todoroki, J. Klatsky, M. Jezghani, Yu. Efremenko, Brajesh K. Singh, V. Singh, M. McCumber, S. P. Sorensen, Beomkyu Kim, F. Giordano, M. E. Connors, Y. I. Makdisi, Aaron Angerami, I. E. Yushmanov, J. Jin, K. Das, E. M. Takagui, J. S. Kang, T. Koblesky, Tamas Ferenc Csorgo, N. Riveli, O. Chvala, W. A. Zajc, Takafumi Niida, L. Xue, S. K. Park, J. L. Nagle, K. B. Lee, P. Montuenga, L. Tomášek, C. Baumann, I. J. Choi, B. Xia, J. Hanks, M. Ouchida, V. Baublis, A. Denisov, Yuki Watanabe, M. K. Dayananda, N. Means, M. S. Daugherity, V. Cianciolo, J. G. Lajoie, Sung Keun Park, Dennis Perepelitsa, C. P. Singh, M. Towell, A. Glenn, B. M. Johnson, M. Alfred, T. Hachiya, S. Whitaker, D. Sharma, N. N. Ajitanand, Y. Fukao, Sergey Fokin, A. Enokizono, Prakhar Garg, B. Bannier, R. J. Petti, Jennifer E. Perry, Marisilvia Donadelli, V. Bumazhnov, D. Black, Eunja Kim, L. Patel, T. Hester, O. Dietzsch, H. Valle, P. Chung, K. Karatsu, S. Campbell, Min Soo Kim, A. Kravitz, G. D. N. Perera, Takahiro Nakamura, R. Tanabe, J. Sziklai, T. Jones, Peter Christiansen, Alexander Milov, I. Nakagawa, T. C. Awes, D. Winter, D. McGlinchey, Dipanwita Dutta, Kyoichiro Ozawa, T. Liška, Brian Cole, Anne Marie Sickles, H. A. Gustafsson, T. Murakami, Young-Ki Kim, T. Engelmore, N. Novitzky, B. Schaefer, D. Yu Peressounko, O. Drapier, Jun Kikuchi, Susumu Oda, C. Gal, Susumu Sato, A. Sen, Julia Velkovska, A. Datta, H. Asano, M. J. Tannenbaum, J. S. Bok, Frank Ellinghaus, M. Gonin, A. Durum, E. R. Kinney, P. Ružička, Rushan Han, N. Grau, A. J. Miller, D. P. Morrison, J. E. Frantz, Catherine Micaela Silvestre, A. Sukhanov, K. Kurita, Minghui Liu, K. Yamaura, Viktor Riabov, M. Leitgab, H. Torii, B. K. Schmoll, H. Pereira, Y. Morino, G. R. Young, Tatsuya Chujo, S. Sawada, M. Heffner, Motoi Inaba, J. Ying, A. Franz, C. O. Kim, A. Kim, S. Rembeczki, Kenneth Francis Read, J. Bryslawskyj, Senta Greene, R. M. Wright, A. T. Basye, B. Fadem, E. O'Brien, T. Kempel, Alice Mignerey, K. S. Sim, L. D'Orazio, S. Miyasaka, P. L. McGaughey, R. Yang, S. Taneja, Takao Sakaguchi, S. Beckman, K. Imai, A. D. Frawley, S. Huang, W. Holzmann, K. Watanabe, K. Shoji, M. Tomášek, T. Horaguchi, M. Beaumier, P. W. Stankus, K. S. Joo, Y. Imazu, H. Qu, Hideki Hamagaki, K. Aoki, G. David, K. I. Hahn, S. Esumi, R. Ichimiya, Martin Purschke, C. A. Aidala, Pawan Kumar Netrakanti, A. Morreale, Z. Fraenkel, V. Khachatryan, R. K. Choudhury, B. Meredith, B. Azmoun, A. Král, M. Oka, P. Kline, K. S. Lee, Y. Ikeda, P. Liebing, R. Akimoto, C. Pinkenburg, K. Dehmelt, G. Roche, S. Yokkaichi, Y. J. Mao, J. H. Kang, J. S. Haggerty, Y. S. Lai, G. S. Kyle, James Alexander, K. Sakashita, R. Averbeck, D. Kotov, S. Hasegawa, Byung-Sik Hong, A. Bazilevsky, A. Kiss, D. S. Jumper, Jason Kamin, Henner Buesching, Steve Edwards, Alexandre Lebedev, S. P. Stoll, S. S.E. Rosendahl, D. M. Lee, G. Bunce, D. Jouan, M. Chiu, C. A. Ogilvie, T. K. Hemmick, J. M. Durham, Yasuo Miake, K. DeBlasio, L. Kochenda, M. Issah, R. Pinson, S. Wolin, R. Pak, N. Apadula, C. Oakley, A. Drees, Marcus Hohlmann, B. Komkov, L. A. Linden Levy, Norio Saito, Tsutomu Mibe, M. A. L. Leite, K. Fujiwara, Jongmin Lee, Y. L. Yamaguchi, S. H. Lim, D. Lynch, R. Belmont, J. S. Kapustinsky, A. Taketani, V. Babintsev, T. Dahms, S. Mizuno, S. Dairaku, X. Jiang, H. W. Van Hecke, A. Meles, S. Bathe, Agneta Oskarsson, Y. Berdnikov, S. H. Lee, Y. Akiba, C. McKinney, S. Nagamiya, M. Virius, E. T. Atomssa, Manabu Togawa, Vaclav Vrba, Klaus Johannes Reygers, Rui Wei, J. C. Peng, J. D. Orjuela Koop, S. W. Nam, C. H. Chen, K. N. Barish, A. Manion, I. Ravinovich, M. Bai, Inseok Yoon, Zhiying You, R. Bennett, M. Kawashima, M. Finger, Y. Nakamiya, S. Sano, John Hill, M. L. Brooks, G. Baksay, B. Love, Toru Sugitate, François Fleuret, A. Sexton, Z. Rowan, M. Mendoza, S. N. White, Deepa Thomas, B. Sahlmueller, S. Yalcin, R. Seto, Zvi Hirsh Citron, H. Ge, K. Nakano, Y. J. Kim, J. T. Mitchell, I. Danchev, X. He, W. E. Sondheim, D. Ivanischev, Y. Aramaki, Robert Vertesi, R. Seidl, K. Boyle, T. Ichihara, J. Koster, H. Masui, Takahiro Fusayasu, A. Mwai, K. Kihara, Vladislav Manko, M. Slunečka, D. Silvermyr, W. J. Park, Christopher Rosen, A. Yanovich, S. Belikov, C. Vale, A. Timilsina, F. Matathias, Kensuke Homma, E. Richardson, B. Bassalleck, M. Konno, A. Deshpande, Y. Watanabe, I. Younus, H. Sako, D. Kawall, H. Themann, J. Murata, Gerd Joachim Kunde, I. Shein, K. Sedgwick, Mihael Makek, M. Naglis, H. Nakagomi, T. Hoshino, Y. Gu, Masayasu Ishihara, J. H. Do, Taku Gunji, H. Gong, and J. Seele
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, media_common.quotation_subject, Eta meson, Asymmetry, Nuclear physics, Transverse plane, Cross section (physics), Pseudorapidity, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, Relativistic Heavy Ion Collider, media_common
Abstract: We present a measurement of the cross section and transverse single-spin asymmetry (AN) for. mesons at large pseudorapidity from root s = 200 GeV p up arrow + p collisions. The measured cross section for 0.5 = 0.061 +/- 0.014. The results are consistent with prior transverse single-spin measurements of forward eta and pi(0) mesons at various energies in overlapping x(F) ranges. Comparison of different particle species can help to determine the origin of the large observed asymmetries in p up arrow + p collisions.
Published: 2014

42. Low-mass vector-meson production at forward rapidity inp+pcollisions ats=200 GeV

Author: A. V. Kazantsev, S. Wolin, S. Bathe, M. Chiu, R. Pak, C. A. Ogilvie, T. K. Hemmick, J. M. Durham, Yasuo Miake, K. DeBlasio, L. Kochenda, M. Issah, R. Pinson, Y. J. Mao, Alice Mignerey, Byoungchoo Park, N. Apadula, C. Oakley, A. Drees, D. Kotov, D. S. Jumper, T. Sodre, Jason Kamin, S. P. Stoll, V. S. Pantuev, S. S.E. Rosendahl, G. Bunce, D. Jouan, B. Meredith, R. S. Towell, Prashant Shukla, B. Azmoun, Jongmin Lee, D. Hornback, A. Král, Sung Keun Park, C. L. Woody, A. Berdnikov, Y. Fukao, Taku Gunji, J. H. Kang, Serpil Yalcin, M. Kurosawa, N. N. Ajitanand, J. T. Mitchell, L. Tomášek, J. S. Haggerty, L. D'Orazio, S. Miyasaka, S. R. Lee, S. F. Pate, M. Vargyas, J. Hamblen, M. Tomášek, G. S. Kyle, Y. L. Yamaguchi, D. Lynch, Marisilvia Donadelli, V. Bumazhnov, L. Guo, Atsushi Takahara, Alexei Khanzadeev, K. Utsunomiya, Y. Watanabe, I. Younus, Aaron Angerami, James Alexander, N. Feege, Jan Rak, R. Seidl, H. Pei, Petr Gallus, Ke. Nakamura, A. Taketani, M. Patel, Hiromi Iinuma, E. Stenlund, W. A. Zajc, D. Black, T. Hester, G. D. N. Perera, Takao Sakaguchi, R. Armendariz, J. A. Key, Vladislav Manko, L. Xue, V. Baublis, M. Oka, A. Denisov, Yuki Watanabe, John Hill, P. Kline, K. S. Lee, Min Soo Kim, D. Kawall, J. B. Choi, A. D. Frawley, K. A. Drees, R. Lacey, V. Cianciolo, H. Themann, Senta Greene, M. Slunečka, L. Patel, I. V. Sourikova, Takahiro Nakamura, S. Mizuno, R. Granier de Cassagnac, R. Tanabe, A. T. Basye, D. McGlinchey, Y. S. Lai, S. Huang, P. Montuenga, K. Okada, A. Adare, Sergey Fokin, Dipak Kumar Mishra, D. H. Kim, Byung-Sik Hong, S. Dairaku, H. En'yo, Toru Sugitate, S. Butsyk, A. Bazilevsky, H. W. Van Hecke, S. Motschwiller, W. Holzmann, Martin Purschke, C. A. Aidala, M. J. Leitch, J. Seele, D. Ivanishchev, J. Murata, Maya Hachiya Shimomura, R. S. Hollis, A. Durum, B. Fadem, E. O'Brien, V. Papavassiliou, J. Klatsky, Y. I. Makdisi, T. C. Awes, Gerd Joachim Kunde, Kyoichiro Ozawa, K. R. Andrews, R. A. Soltz, K. V. Dharmawardane, M. Ouchida, J. S. Bok, S. Zhou, Catherine Micaela Silvestre, Rushan Han, M. Savastio, Alexandre Lebedev, I. Shein, Agneta Oskarsson, N. Means, O. Dietzsch, P. Sett, T. V. Moukhanova, Pawan Kumar Netrakanti, N. S. Bandara, D. Broxmeyer, Dmitry Blau, A. Morreale, Vladimir Samsonov, Christine Nattrass, H. J. Kim, Y. Berdnikov, C. Vale, S. H. Lee, Y. Akiba, C. Harper, D. M. Lee, Y. J. Kwon, M. J. Tannenbaum, M. Grosse Perdekamp, M. Virius, E. T. Atomssa, K. Sedgwick, T. Todoroki, N. Grau, C. McKinney, S. Nagamiya, Manabu Togawa, E. J. Desmond, S. D. Rolnick, H. Torii, B. K. Schmoll, A. Timilsina, Mihael Makek, Vaclav Vrba, Klaus Johannes Reygers, F. Giordano, M. E. Connors, V. Khachatryan, S. Yokkaichi, Hongfang Liu, D. E. Fields, M. Leitgab, Rui Wei, S. Hasegawa, E. Vazquez-Zambrano, T. Kempel, J. D. Orjuela Koop, François Fleuret, R. K. Choudhury, E. Tennant, M. Beaumier, K. S. Joo, B. V. Jacak, Y. Nakamiya, S. K. Park, Tamas Ferenc Csorgo, C. H. Chen, S. Kaneti, A. Taranenko, Takafumi Niida, A. Kiss, C. Gal, Julia Velkovska, Ryugo S. Hayano, B. Komkov, M. Kasai, Y. Tsuchimoto, Y. Ikeda, M. McCumber, M. Naglis, H. Nakagomi, J. S. Kang, J. L. Nagle, Motoi Inaba, D. John, P. Castera, Y. Riabov, H. A. Gustafsson, A. Manion, Y. Iwanaga, T. Hoshino, Y. Gu, R. M. Wright, Henner Buesching, Z. Rowan, M. Sarsour, Mate Csanad, I. Ravinovich, M. Mendoza, Kenta Shigaki, S. N. White, Kazushi Miki, S. J. Jeon, I. E. Yushmanov, K. S. Sim, N. Riveli, Norio Saito, Tsutomu Mibe, M. Rosati, A. Iordanova, S. Y. Han, M. Nguyen, M. A. L. Leite, A. Vossen, K. B. Lee, E. M. Takagui, T. Horaguchi, J. S. Yoo, M. K. Dayananda, X. Gong, M. Bai, Brajesh K. Singh, J. Hanks, Ajit Kumar Mohanty, Masayasu Ishihara, S. Esumi, E. C. Aschenauer, H. H. Shim, A. S. Nyanin, R. Akimoto, Charles Maguire, C. Pinkenburg, K. Watanabe, J. H. Do, L. A. Linden Levy, T. Jones, S. H. Lim, Deepa Thomas, Rachid Nouicer, A. N. Zelenski, M. Proissl, R. Ichimiya, T. A. Shibata, C. L. Silva, Peter Christiansen, Viktor Riabov, K. Dehmelt, B. Sahlmueller, K. Shoji, Inseok Yoon, Zhiying You, D. Winter, Jason Newby, E. Joo, T. Sato, M. Stepanov, R. Bennett, M. Nihashi, R. Belmont, J. S. Kapustinsky, I. Garishvili, F. Wei, Y. J. Kim, V. Babintsev, D. Yu Peressounko, G. Roche, Kiyoshi Tanida, M. Finger, Prakhar Garg, B. Bannier, Hari Guragain, Zvi Hirsh Citron, X. Jiang, H. Ge, E. Kistenev, S. Campbell, Jiangyong Jia, P. W. Stankus, R. P. Pisani, S. Tarafdar, K. Nakano, Y. Goto, T. Murakami, A. Meles, J. Sun, W. E. Sondheim, Y. Imazu, D. Ivanischev, Kensuke Homma, R. Yang, E. Richardson, Eva Haslum, Hiroyuki Sako, T. Sumita, C. Y. Chi, K. Boyle, T. Ichihara, D. Kleinjan, Takahiro Fusayasu, Eric Appelt, K. Kihara, Y. Tanaka, C. Baumann, B. Bassalleck, S. Taneja, D. Silvermyr, E. Mannel, M. S. Daugherity, C. P. Singh, H. Qu, B. M. Johnson, D. Isenhower, R. J. Petti, J. Sziklai, A. Yanovich, Brian Cole, M. Konno, T. Moon, Hideki Hamagaki, K. Aoki, G. David, S. Sawada, K. I. Hahn, H. J. Moon, K. Imai, J. Ying, A. Franz, D. Sharma, K. Karatsu, J. Ben-Benjamin, Y. Hori, Anne Marie Sickles, B. Schaefer, G. R. Young, A. Enokizono, Raphael Noel Tieulent, Susumu Sato, A. Sen, A. Datta, H. Asano, Y. Miyachi, L. Ding, Alexander Milov, I. Nakagawa, Young-Ki Kim, T. Engelmore, N. Novitzky, M. Kofarago, O. Drapier, D. Roach, K. M. Kijima, E. R. Kinney, D. P. Morrison, K. Hashimoto, B. H. Kang, Xingguo Li, Minghui Liu, S. P. Sorensen, H. Al-Ta'Ani, Tatsuya Chujo, Kenneth Francis Read, I. Tserruya, M. Jezghani, Yu. Efremenko, P. L. McGaughey, S. Beckman, V. Singh, O. Chvala, T. Koblesky, H. Ozaki, J. G. Lajoie, M. Alfred, T. Hachiya, A. Dion, S. Whitaker, Jennifer E. Perry, A. Glenn, Johannes Peter Wessels, Eunja Kim, M. Gonin, Jen-Chieh Peng, J. G. Rubin, J. Bryslawskyj, J. E. Frantz, B. Love, Beomkyu Kim, A. J. Miller, D. Reynolds, Inkyu Park, Xiong Wang, A. Sexton, A. Sukhanov, K. Kurita, H. Pereira, Z. Conesa del Valle, R. Seto, Y. Morino, Dong Jo Kim, I. J. Choi, B. Xia, Dennis Perepelitsa, X. He, Y. Aramaki, Robert Vertesi, M. Towell, C. O. Kim, J. Koster, M. Wysocki, H. Masui, M. I. Nagy, D. Watanabe, A. Veicht, A. Mwai, E. Vznuzdaev, K. N. Barish, S. Sano, M. L. Brooks, and A. Deshpande
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Nuclear Theory, Sigma, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), Rapidity, Vector meson, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Low Mass
Abstract: The PHENIX experiment at the Relativistic Heavy Ion Collider has measured low-mass vector-meson ,omega, rho, and phi, production through the dimuon decay channel at forward rapidity (1.2 mu mu) = 80 +/- 6(stat) +/- 12(syst)nb and d sigma/dy(phi -> mu mu) = 27 +/- 3(stat) +/- 4(syst)nb. These results are compared with midrapidity measurements and calculations.
Published: 2014

43. Inclusive double-helicity asymmetries in neutral-pion and eta-meson production inp→+p→collisions ats=200 GeV

Author: T. Hester, K. B. Lee, T. Murakami, Kensuke Homma, E. Richardson, V. S. Pantuev, K. R. Andrews, R. A. Soltz, N. Grau, Motoi Inaba, R. M. Wright, M. Grosse Perdekamp, F. Giordano, B. Bassalleck, Y. Ikeda, S. Dairaku, Hongfang Liu, D. E. Fields, B. V. Jacak, Y. Miyachi, M. E. Connors, X. He, J. Hamblen, M. Konno, R. Akimoto, M. Sarsour, Mate Csanad, A. Iordanova, K. Karatsu, J. Ben-Benjamin, Y. Nakamiya, C. Pinkenburg, B. Sahlmueller, Y. J. Kim, M. McCumber, J. T. Mitchell, H. A. Gustafsson, T. Jones, Peter Christiansen, Y. Hori, Anne Marie Sickles, D. Roach, K. M. Kijima, X. Jiang, Y. Aramaki, A. V. Kazantsev, S. Sawada, J. Ying, A. Franz, M. Nihashi, K. Okada, H. En'yo, G. Roche, R. Seidl, Vladislav Manko, M. Slunečka, Ajit Kumar Mohanty, D. Winter, Maya Hachiya Shimomura, D. Yu Peressounko, Robert Vertesi, C. Vale, R. S. Hollis, T. A. Shibata, C. L. Silva, T. Sato, M. J. Leitch, R. P. Pisani, Y. J. Mao, Vladimir Samsonov, J. Hanks, A. Kiss, K. Hashimoto, M. Mendoza, G. R. Young, Viktor Riabov, Aaron Angerami, S. N. White, Beomkyu Kim, O. Dietzsch, Deepa Thomas, J. H. Kang, Xingguo Li, Y. I. Makdisi, Sung Keun Park, M. Virius, Manabu Togawa, N. N. Ajitanand, Zvi Hirsh Citron, J. Koster, C. L. Woody, J. S. Haggerty, S. R. Lee, L. Tomášek, B. Komkov, Y. Tanaka, Henner Buesching, M. Gonin, J. Huang, J. S. Yoo, K. Utsunomiya, M. K. Dayananda, C. Gal, E. Mannel, Norio Saito, Takahiro Nakamura, Tsutomu Mibe, W. A. Zajc, X. Gong, V. Baublis, A. Denisov, Yuki Watanabe, V. Cianciolo, Julia Velkovska, K. Nakano, Atsushi Takahara, D. McGlinchey, M. Wysocki, K. A. Drees, W. E. Sondheim, B. Bannier, Sergey Fokin, Tamas Ferenc Csorgo, M. A. L. Leite, C. H. Chen, Y. J. Kwon, M. J. Tannenbaum, H. H. Shim, Hiromi Iinuma, M. Rosati, A. Sukhanov, K. Kurita, D. Ivanischev, L. A. Linden Levy, Prashant Shukla, H. Torii, S. H. Lim, Y. S. Lai, J. L. Nagle, D. John, P. Castera, A. Manion, I. J. Choi, E. Tennant, K. Boyle, T. Ichihara, H. Masui, S. F. Pate, Ke. Nakamura, R. Armendariz, L. Patel, R. Belmont, J. S. Kapustinsky, V. Babintsev, T. C. Awes, A. Durum, H. Pereira, Senta Greene, A. T. Basye, D. Isenhower, Y. Morino, Martin Purschke, Kyoichiro Ozawa, C. A. Aidala, Takahiro Fusayasu, Y. L. Yamaguchi, B. Fadem, T. Sodre, M. Tomášek, J. S. Bok, S. Bathe, Alice Mignerey, M. Chiu, G. S. Kyle, S. Motschwiller, E. O'Brien, L. D'Orazio, Jongmin Lee, Alexander Milov, H. Qu, James Alexander, S. Tarafdar, Takao Sakaguchi, V. Papavassiliou, Jiangyong Jia, Y. Goto, A. Veicht, C. A. Ogilvie, C. Silvestre, D. Silvermyr, J. S. Kang, Byung-Sik Hong, A. Bazilevsky, A. D. Frawley, I. Nakagawa, Young-Ki Kim, B. Love, T. Engelmore, H. J. Moon, Minghui Liu, T. K. Hemmick, H. W. Van Hecke, S. Yokkaichi, J. M. Durham, Yasuo Miake, Eva Haslum, S. Huang, D. Lynch, K. V. Dharmawardane, Marisilvia Donadelli, V. Bumazhnov, Hideki Hamagaki, K. Aoki, O. Drapier, I. V. Sourikova, D. Kleinjan, Eric Appelt, Alexandre Lebedev, Charles Maguire, W. Holzmann, D. M. Lee, Kenneth Francis Read, S. P. Sorensen, A. Yanovich, D. Broxmeyer, L. Kochenda, M. Issah, E. R. Kinney, Agneta Oskarsson, G. David, K. I. Hahn, A. Taketani, Taku Gunji, J. Newby, D. P. Morrison, S. Campbell, D. Hornback, O. Chvala, B. H. Kang, Kiyoshi Tanida, S. H. Lee, Y. Akiba, A. Morreale, B. Meredith, R. Pak, E. Kistenev, I. Ravinovich, C. McKinney, S. Nagamiya, D. Watanabe, R. Tanabe, Vaclav Vrba, E. Vznuzdaev, P. L. McGaughey, M. Ouchida, K. Watanabe, Klaus Johannes Reygers, Rui Wei, H. Al-Ta'Ani, Tatsuya Chujo, N. Means, John Hill, J. G. Lajoie, A. Taranenko, M. Bai, Byoungchoo Park, K. Shoji, E. C. Aschenauer, Kazushi Miki, T. Horaguchi, Jen-Chieh Peng, C. Oakley, A. Drees, C. Harper, J. Sun, R. Seto, Toru Sugitate, Brajesh K. Singh, J. E. Frantz, H. Pei, R. K. Choudhury, S. Butsyk, P. W. Stankus, Zhiying You, R. Bennett, K. S. Joo, S. Zhou, Rushan Han, D. Kotov, M. Finger, Ryugo S. Hayano, S. D. Rolnick, François Fleuret, Inkyu Park, Y. Riabov, N. Apadula, Jason Kamin, Xiong Wang, S. P. Stoll, Kenta Shigaki, M. Nguyen, K. N. Barish, Z. Conesa del Valle, A. Vossen, Dong Jo Kim, A. S. Nyanin, S. S.E. Rosendahl, G. Bunce, Rachid Nouicer, A. N. Zelenski, M. Proissl, S. Sano, T. Kempel, S. Esumi, D. Sharma, S. Kaneti, D. Jouan, A. Enokizono, A. Dion, M. I. Nagy, R. Ichimiya, I. Tserruya, Johannes Peter Wessels, M. L. Brooks, Yu. Efremenko, V. Singh, B. Azmoun, A. Král, A. Glenn, A. Datta, Eunja Kim, M. Oka, P. Kline, K. S. Lee, Dmitry Blau, E. J. Desmond, E. Vazquez-Zambrano, M. Kasai, Y. Tsuchimoto, Y. Iwanaga, I. E. Yushmanov, L. Guo, Alexei Khanzadeev, E. Stenlund, J. B. Choi, T. V. Moukhanova, A. Deshpande, Y. Watanabe, I. Younus, D. Kawall, H. Themann, J. Murata, Gerd Joachim Kunde, I. Shein, K. Sedgwick, C. Baumann, M. Naglis, Masayasu Ishihara, C. P. Singh, B. M. Johnson, R. J. Petti, J. Sziklai, Brian Cole, M. Kurosawa, M. Savastio, E. M. Takagui, R. S. Towell, I. Garishvili, F. Wei, C. Y. Chi, K. S. Sim, R. Yang, S. Taneja, K. Imai, Jan Rak, R. Lacey, R. Granier de Cassagnac, A. Adare, and Y. Fukao
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Scattering, media_common.quotation_subject, Eta meson, Polarization (waves), Helicity, Asymmetry, Gluon, Nuclear physics, Pion, High Energy Physics::Experiment, Relativistic Heavy Ion Collider, media_common
Abstract: Results are presented from data recorded in 2009 by the PHENIX experiment at the Relativistic Heavy Ion Collider for the double-longitudinal spin asymmetry, A(LL), for pi(0) and eta production in root s = 200 GeV polarized p + p collisions. Comparison of the pi(0) results with different theory expectations based on fits of other published data showed a preference for small positive values of gluon polarization, Delta G, in the proton in the probed Bjorken x range. The effect of adding the new 2009 pi(0) data to a recent global analysis of polarized scattering data is also shown, resulting in a best fit Delta G(DSSV)([0.05,0.2]) = 0.06(-0.15)(+0.11) in the range 0.05 < x < 0.2, with the uncertainty at Delta chi(2) = 9 when considering only statistical experimental uncertainties. Shifting the PHENIX data points by their systematic uncertainty leads to a variation of the best-fit value of Delta G(DSSV)([0.05,0.2]) between 0.02 and 0.12, demonstrating the need for full treatment of the experimental systematic uncertainties in future global analyses.
Published: 2014

44. Measurements of the Σ0 and Σ++ mass splittings

Author: L. A. Garren, E. Montiel, H. Mendez, D Brambilla, Luigi Moroni, Y. J. Kwon, J. E. Ramirez, E. W. Vaandering, F. R.A. Simão, P. D'Angelo, F. L. Fabbri, A. C. dos Reis, S. Carrillo, M. V. Purohit, I. Gaines, J. M. De Miranda, T. F. Davenport, Y. Zhang, Kevin Stenson, V. Arena, N. K. Copty, A. M. Lopez, Michael S. Webster, V. Paolone, M. Boschini, Robert Gardner, Marco Rovere, P. H. Garbincius, S. Sala, M. S. Nehring, J. W. Kwak, S. P. Ratti, John Perry Cumalat, L. Méndez, A. Sanchez-Hernandez, A. Sala, Paolo Dini, M. Hosack, E. Casimiro, J. C. Anjos, Ignacio Bediaga, Marco Giammarchi, L. Cinquini, D. Engh, P. Torre, S. S. Myung, A Calandrino, B. R. Ko, Germano Bonomi, H. Hernandez, A. Rahimi, G. Boca, James R. Wilson, C. Cawlfield, D. Y. Kim, Marco A. Reyes, G. Liguori, A. E. Kreymer, M Sales, M. DiCorato, L. Viola, J. Magnin, L. Milazzo, J. Quinones, K. Cho, P. M. Yager, B. O'Reilly, Dario Menasce, F. Vázquez, A. Zallo, C. Rivera, P. H. Kasper, Stephen A. Gourlay, M. Mezzadri, M. M. Merlo, J. N. Butler, Sandra Malvezzi, B. Caccianiga, C. Göbel, J. M. Link, R. Kutschke, Paul Sheldon, Gabriele Gianini, K. S. Park, Y. S. Chung, James E Wiss, F. Leveraro, D. Pantea, F. Prelz, W. E. Johns, C. Uribe, Paolo Vitulo, Gianluca Alimonti, T. Handler, Erik Gottschalk, D. Olaya, Stefano Bianco, Cristina Riccardi, S. Sarwar, K. B. Lee, Harry Cheung, Hyangkyu Park, A. Mirles, Daniele Pedrini, P. Inzani, J. S. Kang, M. Sheaff, and Iuri Muniz Pepe
Subjects: Nuclear physics, Charmed baryons, Physics, Nuclear and High Energy Physics, Isospin, Analytical chemistry, Fermilab
Abstract: Using a high statistics sample of photoproduced charmed particles from the FOCUS experiment at Fermilab (FNAL-E831), we measure the mass splittings of the charmed baryons Σ c 0 and Σ c ++ . We find M(Σ c 0 −Λ c + ) =167.38 ±0.21 ±0.13 MeV /c 2 and M(Σ c ++ −Λ c + ) =167.35 ±0.19 ±0.12 MeV /c 2 with samples of 362±36 and 461±39 events, respectively. We measure the isospin mass splitting M(Σ c ++ −Σ c 0 ) to be −0.03 ±0.28 ±0.11 MeV /c 2 . The first errors are statistical and the second are systematic.
Published: 2000

45. An experimental study of the process e+e−→e+e−μ+μ−

Author: R. L. Lander, N. Nakajima, S. K. Choi, C. Rosenfeld, K. Gotow, Takashi Sasaki, H. S. Ahn, P. N. Kirk, Saroj Kumar Sahu, H. Miyata, Y. Yamashita, Y. Sakai, Yuki Fujii, Winston Ko, K. Ueno, S. Behari, A. Murakami, Tsunehiko Omori, L. E. Piilonen, Moo Hyun Lee, A. M. Bacala, Koji Abe, S. Igarashi, T. Aso, Richard Breedon, D. Y. Kim, J. Rowe, M. Sato, Yasuhiro Sugimoto, S. S. Myung, A. Abashian, Hiroyuki Sagawa, A. Kimura, T. Nozaki, J. S. Kang, S. K. Kim, Y. Takaiwa, Hyunyong Kim, S. Kobayashi, Kazumasa Miyano, Naomi Takashimizu, Susumu Terada, Stephen L. Olsen, Yoshimasa Kurihara, M. Shirai, T. J. Wang, Steve Schnetzer, A. Maki, L. Y. Zheng, and S. Matsumoto
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Analytical chemistry, High Energy Physics::Experiment, Luminosity
Abstract: We present the results of a study of e + e − μ + μ − final states produced in e + e − collisions at a center-of-mass energy of 58 GeV using the AMY detector at TRISTAN. The data correspond to a total integrated luminosity of 292.8 pb −1 . The results show good agreement with order α 4 QED predictions.
Published: 1998

46. Observation of a narrow state decaying into Ξ0π+

Author: C. J. Kennedy, F. Prelz, P. H. Garbincius, Robert Gardner, V. Arena, P. M. Yager, Germano Bonomi, Y. Zhang, I. Gaines, E. Meroni, S. S. Myung, F. L. Fabbri, A. Mirles, C. Rivera, J. F. Ginkel, N. M. Cason, Sandra Malvezzi, J. N. Butler, K. Y. Kim, M. S. Nehring, B. Gobbi, G. N. Kim, Daniele Pedrini, T. Handler, E. Gottschalk, L. A. Garren, James R. Wilson, Randy Ruchti, P. Inzani, A. Zallo, S. P. Ratti, E. Ramirez, D. Claes, S. Shukla, C. Castoldi, A. Rahimi, L. Milazzo, F. Leveraro, S. Sarwar, K. B. Lee, D. J. Harding, E. Montiel, D. L. Puseljic, J. S. Kang, R. Culbertson, Marco Giammarchi, B. O'Reilly, J. M. Link, Harry Cheung, C. Dallapiccola, D. Olaya, Paolo Dini, S. Cihangir, D. Torretta, M. Hosack, G. Alimonti, M. Boschini, A. E. Kreymer, P. Lebrun, W. D. Shephard, Stefano Bianco, Cristina Riccardi, L. Mendez, James E Wiss, Paul Sheldon, W. E. Johns, M. Di Corato, Gabriele Gianini, K. S. Park, John Perry Cumalat, L. Cinquini, Dario Menasce, F. Davenport, J. M. Bishop, J. Gao, Paolo Vitulo, Stephen A. Gourlay, R. Greene, J. A. Swiatek, M. M. Merlo, P. L. Frabetti, Y. S. Chung, A. Sala, D. Brambilla, K. Danyo, G. Boca, V. Paolone, Alan D. Lopez, S. Sala, D. Buchholz, L. Perasso, P. H. Kasper, T. F. Lin, C. Cawlfield, Z. Y. Wu, B. G. Cheon, M. Vittone, B. Caccianiga, G. Bellini, E. W. Vaandering, Luigi Moroni, L. Viola, and K. Cho
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, chemistry, chemistry.chemical_element, State (functional analysis), Beryllium, Atomic physics
Abstract: We report the observation of the Ξ c ∗+ state decaying into Ξc0π+ with Ξ c 0 →Λ K 0 π + π − or ΛK−π+π+π−. We have observed 47±11 candidate events for the Ξ c ∗+ state and measured its mass to be 177.1±0.5±1.1 MeV/ c 2 above the Ξc0 mass. We have also measured the Ξc0 mass to be 2470.0±2.8±2.6 MeV/ c 2 .
Published: 1998

47. A new measurement of the lifetime of the Ξ+

Author: S. Shukla, W. D. Shephard, Stefano Bianco, Cristina Riccardi, L. Perasso, James R. Wilson, E. Gottschalk, L. A. Garren, Randy Ruchti, B. Gobbi, D. L. Puseljic, P. Inzani, A. Zallo, Kisoo Lee, Harry Cheung, C. Rivera, V. Arena, C. Dallapiccola, Germano Bonomi, V. Paolone, Gabriele Gianini, K. S. Park, J. F. Ginkel, Y. Zhang, C. J. Kennedy, S. Cihangir, R. Culbertson, N. M. Cason, M. Vittone, Marco Giammarchi, C. Castoldi, D. J. Harding, Alan D. Lopez, M. S. Nehring, F. Prelz, E. Meroni, T. F. Lin, T. Handler, Luigi Moroni, J. N. Butler, S. Sarwar, F. Leveraro, M. Boschini, J. Cao, G. Alimonti, P. M. Yager, A. E. Kreymer, P. Lebrun, J. M. Link, A. Rahimi, B. O'Reilly, Dario Menasce, M. Di Corato, D. Olaya, John Perry Cumalat, Paolo Dini, M. Hosack, Paul Sheldon, W. E. Johns, Fabrizio Fabbri, I. Gaines, Robert Gardner, L. Mendez, D. Buchholz, B. Caccianiga, L. Cinquini, G. N. Kim, P. H. Garbincius, D. Brambilla, E. Ramirez, J. S. Kang, P. H. Kasper, J. M. Bishop, K. Danyo, L. Milazzo, J. A. Swiatek, G. Boca, G. Bellini, K. Y. Kim, E. W. Vaandering, James E Wiss, L. Viola, C. Cawlfield, K. Cho, Daniele Pedrini, Z. Y. Wu, S. Sala, D. Claes, B. G. Cheon, A. Mirles, Richard L. Greene, D. Torretta, S. P. Ratti, Paolo Vitulo, S. S. Myung, Sandra Malvezzi, P. L. Frabetti, E. Montiel, F. Davenport, Stephen A. Gourlay, M. M. Merlo, Y. S. Chung, and A. Sala
Subjects: Physics, Nuclear physics, Hadronic decay, Nuclear and High Energy Physics, High energy, chemistry, Mass spectrum, chemistry.chemical_element, Fermilab, Atomic physics, Beryllium
Abstract: New measurements of the lifetime and mass of the Ξ c + are presented. The Ξ c + has been reconstructed through the two decay channels Ξ − π + π + and Σ + K − π + . The data were accumulated by the Fermilab high energy photoproduction experiment E687. The lifetime is measured to be 0.34 +0.07 −0.05 (stat.)±0.02 (syst.) ps while the mass is measured to be 2465.8±1.9 (stat.)±2.5 (syst.) MeV/c 2 .
Published: 1998

48. Zγproduction inpp¯collisions ats=1.8TeVand limits on anomalousZZγandZγγcouplings

Author: G. Eppley, A. Jonckheere, P. Padley, Alexey Volkov, A. P. Vorobiev, Stephan Linn, S. P. Denisov, Ulrich Heintz, J. Jaques, H. da Motta, J. G.R. Lima, Y. Fisyak, S. Krzywdzinski, R. Lander, R. D. Schamberger, S. C. Loken, M. R. Krishnaswamy, Mitchell Wayne, H. Schellman, J. M. Kohli, N. Oshima, V. I. Kochetkov, A. S. Ito, M. Diesburg, F. Hsieh, A. R. Clark, Daria Zieminska, Marvin Johnson, L. Magaña-Mendoza, D. Owen, A. Para, Stefan Grünendahl, Sergey Chekulaev, A. L. Lyon, J. Thompson, A. Zylberstejn, Jan M. Guida, A. V. Kozelov, J. Womersley, J. Tarazi, P. Bloom, I. Adam, K. W. Merritt, B. Gómez, Z. H. Zhu, Gordon Watts, V. Sirotenko, H. Greenlee, T. Heuring, J. F. Bartlett, S. Glenn, J. McKinley, N. I. Bojko, Robert Kehoe, Yanwen Liu, Robert Snihur, S. R. Dugad, D. A. Stoianova, O. V. Eroshin, R. Markeloff, Elizabeth Gallas, H. Jostlein, M. L. Kelly, Howard Gordon, K. C. Frame, Joan A. Guida, O. Ramirez, Phillip Gutierrez, Wagner Carvalho, Raymond Brock, Boaz Klima, Gervasio Gomez, J. Cochran, E. G. Zverev, S. M. Chang, K. Gounder, N. Sotnikova, T. Huehn, S. Feher, Ting Hu, D. Fein, Andrew White, Cecilia Elena Gerber, D. Chakraborty, D. Norman, D. Vititoe, Sándor Lökös, J. Yang, G. Di Loreto, R. J. Genik, S. Willis, M. A. Shupe, B. Lauer, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, C. Shaffer, D. Cullen-Vidal, C. S. Mishra, Yu. Pischalnikov, A. Goldschmidt, M. H.G. Souza, Don Lincoln, Erich Varnes, H. E. Montgomery, A. Klatchko, A. Zieminski, M. Pang, C. Cretsinger, Daniel John Karmgard, Jianming Qian, N. N. Biswas, D. Denisov, V. M. Podstavkov, C. Boswell, L. Lueking, Srinivasan Rajagopalan, A. V. Kostritskiy, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, Sissel Hansen, S. Chopra, M. Chung, H. Piekarz, Vasken Hagopian, M. Strovink, E. James, Thomas Ferbel, H. Weerts, M. Fortner, P. Grudberg, Y. E. Gutnikov, J. Kourlas, Y. M. Park, Tong Hu, R. Jesik, J. Perkins, Suman Bala Beri, C. Klopfenstein, B. G. Pope, R. Hernández-Montoya, H. L. Melanson, P. Z. Quintas, M. Strauss, Peter Nemethy, K. Del Signore, Lev Dudko, H. Lan, John Hobbs, Stephen Wimpenny, C. T. Murphy, A. N. Galyaev, N. Grossman, D. Stewart, K. Bazizi, K. M. Mauritz, P.F. Ermolov, Sebastien Jonathan Kahn, S. N. Gurzhiev, J. M. Hauptman, S. Y. Jun, S. K. Kim, N.V. Mokhov, T. L.T. Thomas, J. H. Christenson, Hiroaki Aihara, M. Bhattacharjee, M. R. Adams, B. May, Young-Sang Yu, M. Abolins, N. A. Roe, Emanuela Barberis, J. Z.Y. Jiang, D. Edmunds, W. E. Cooper, M. Demarteau, Alexander Belyaev, B. Baldin, A. P. Heinson, Y. Ducros, J. B. Singh, P. Gartung, Andre Sznajder, P. M. Tuts, G. P. Grim, M.K. Fatyga, E. Amidi, G. Guglielmo, P. Hanlet, V. S. Burtovoi, T. Marshall, J. V.D. Wirjawan, Matthew Jones, David H. Adams, P. Yamin, R. E. Hall, S. A. Jerger, L. T. Goss, Robert Hirosky, G. Wang, Alberto Santoro, K. S. Hahn, B. S. Acharya, M. D. Peters, T. Fahland, W. M. Smart, J. L. González Solís, Z. Casilum, C. L. Kim, L. Oesch, T. G. Trippe, H. Haggerty, E. W. Anderson, P. Mooney, B. Gobbi, S. Mani, Elizaveta Shabalina, H. A. Neal, H. C. Shankar, M. Goforth, E. A. Kozlovski, W. Y. Chen, Darien Wood, Gilvan Alves, P. Rubinov, T. Joffe-Minor, G. Finocchiaro, Jong-Sung Yu, Victor Daniel Elvira, Marc M Baarmand, Sharon Hagopian, H. E. Fisk, H. D. Wahl, R. Astur, Nicholas John Hadley, Heriberto Castilla-Valdez, Allen Mincer, R. J. Madaras, A. Gupta, D. Cutts, R. Madden, George R. Kalbfleisch, V. S. Narasimham, Q. Z. Li-Demarteau, S. Blessing, G.E. Forden, R. W. Stephens, E. Flattum, J. Solomon, L. Rasmussen, A. K.A. Maciel, Peter W. Draper, S. Youssef, S. Choi, B. C. Choudhary, N. K. Mondal, V. Oguri, Sebastian Grinstein, Scott Snyder, Jing Li, H. T. Diehl, A. A. Mayorov, N. Parua, Randy Ruchti, D. Buchholz, A. D. Bross, S. Reucroft, M. K. Fatyga, T.R. McMahon, M. Paterno, M. L. Stevenson, Robert J. McCarthy, A. Sanchez-Hernandez, J. Snow, S. Protopopescu, D. P. Stoker, T. Yasuda, B. Pawlik, J. Warchol, P. Yepes, R. Piegaia, P. Tamburello, N. Amos, K. Genser, C. Yoshikawa, Heng Xu, Anna Goussiou, A. V. Kotwal, H. Singh, D.R. Green, J. Balderston, J. Krane, A. Boehnlein, Greg Landsberg, B. Gibbard, Rajendran Raja, D. Casey, Meenakshi Narain, J. A. Wightman, J. Kotcher, C. K. Jung, T. McKibben, Gregory R Snow, J. Sculli, Eunil Won, Brad Abbott, S. Lami, N. Graf, Nikos Varelas, R. K. Shivpuri, K. Streets, Vipin Bhatnagar, T. L. Geld, P. M. Sood, Shuichi Kunori, D. R. Claes, K. A. Johns, M. Tartaglia, Kaushik De, J. Ellison, S. Fuess, H. S. Mao, A. Narayanan, A. Baden, G. C. Blazey, W. G. Cobau, M. Sosebee, R. Yamada, S. H. Ahn, Hui Li, Orin I. Dahl, F. Landry, John Rutherfoord, J. Bantly, R. Partridge, James C. Green, F. Borcherding, E. Oltman, Sarah Catherine Eno, Andrew Brandt, R. Engelmann, Liu Chen, Vyacheslav Klyukhin, H.E. Miettinen, F. Nang, Richard B. Lipton, A. L. Spadafora, P. I. Goncharov, A. Leflat, M. I. Martin, F. Stichelbaut, J. S. Kang, J. McDonald, S. Banerjee, V. Balamurali, M. Merkin, D. Hedin, P. C. Bhat, F. Lobkowicz, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, V. N. Evdokimov, D.S. Koltick, J. T. Linnemann, V. A. Bezzubov, J. P. Negret, R. P. Smith, Harrison Prosper, and J. T. White
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics
Published: 1998

49. Observation of exclusive η production in two photon interactions at TRISTAN

Author: N. Nakajima, Takashi Sasaki, S. S. Myung, Hyunyong Kim, H. Miyata, Y. Yamashita, Y. Sakai, D. Y. Kim, Kazuo Abe, K. Gotow, H. S. Ahn, C. Rosenfeld, A. M. Bacala, M. Shirai, T. J. Wang, J. S. Kang, A. Abashian, Yuki Fujii, R. L. Lander, S. Kobayashi, A. Kimura, Tsunehiko Omori, T. Nozaki, Moo Hyun Lee, K. Ueno, Saroj Kumar Sahu, Richard Breedon, S. K. Choi, Hiroyuki Sagawa, M. Sato, N. Takashimizu, A. Maki, L. Y. Zheng, Winston Ko, S.L. Olsen, P. N. Kirk, T. Aso, L. E. Piilonen, J. Rowe, Yasuhiro Sugimoto, A. Murakami, S. K. Kim, Kazumasa Miyano, Susumu Terada, S. Behari, Yoshimasa Kurihara, Steve Schnetzer, Y. Takaiwa, and S. Matsumoto
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Two-photon excitation microscopy, Astrophysics::High Energy Astrophysical Phenomena, Radiative decay, High Energy Physics::Experiment, Nuclear Experiment, Energy (signal processing)
Abstract: We observe ηc production in the two photon process e+e−→e+e−ηc at an e+e− center-of-mass energy of 58 GeV. We determine the radiative decay width Γγγ(ηc) to be 27±16(sta)±10(sys) keV.
Published: 1998

50. Measurement of α using NLLA+O(α2) in e+e− annihilation at =58.0 GeV

Author: Koji Abe, S. S. Myung, S. Behari, H. S. Ahn, Yasuhiro Sugimoto, K. Gotow, Y. Sakai, P. N. Kirk, H. Miyata, Y. Yamashita, Winston Ko, Y. Takaiwa, D. Y. Kim, L. E. Piilonen, A. Abashian, K. Ueno, S. Choi, Hiroyuki Sagawa, N. Takashimizu, Saroj Kumar Sahu, R. L. Lander, J. Rowe, Yoshimasa Kurihara, M. Satou, Tsunehiko Omori, T. Kojima, Steve Schnetzer, C. Rosenfeld, S. K. Choi, N. Nakajima, Takashi Sasaki, Hyunyong Kim, S. Kanda, S. Matsumoto, T. Nozaki, Yuki Fujii, A. Maki, L. Y. Zheng, Richard Breedon, M. Shirai, T. J. Wang, J. S. Kang, S. Kobayashi, Moo Hyun Lee, T. Aso, S. L. Olsen, S. K. Kim, Kazumasa Miyano, Susumu Terada, and A. Murakami
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Annihilation, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Hadron, Strong coupling, High Energy Physics::Experiment, Jet (particle physics)
Abstract: A measurement of the strong coupling constant αS is presented using hadronic events produced in e+e− annihilations at s =58.0 GeV from the AMY detector at TRISTAN. The measurement is based on comparisons of the distributions of thrust, heavy jet mass, total jet broadening, wide jet broadening, and energy-energy correlations with QCD calculations resummed up to next-to-leading-logarithms matched with the O(αS2) perturbative calculation. Combining the results of the individual evaluations, we find α S (58 GeV )=0.132±0.006 .
Published: 1998

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