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1. Measurement of the branching fraction of J/ψ → ρπ at KEDR

Author: The KEDR collaboration, V. V. Anashin, O. V. Anchugov, A. V. Andrianov, K. V. Astrelina, V. M. Aulchenko, E. M. Baldin, G. N. Baranov, A. K. Barladyan, A. Yu. Barnyakov, M. Yu. Barnyakov, I. Yu. Basok, A. M. Batrakov, E. A. Bekhtenev, O. V. Belikov, D. E. Berkaev, A. E. Blinov, V. E. Blinov, M. F. Blinov, A. V. Bobrov, V. S. Bobrovnikov, A. V. Bogomyagkov, D. Yu. Bolkhovityanov, A. E. Bondar, A. R. Buzykaev, P. B. Cheblakov, V. L. Dorohov, F. A. Emanov, V. V. Gambaryan, D. N. Grigoriev, V. V. Kaminskiy, S. E. Karnaev, G. V. Karpov, S. V. Karpov, K. Yu. Karukina, D. P. Kashtankin, P. V. Kasyanenko, A. A. Katcin, T. A. Kharlamova, V. A. Kiselev, S. A. Kononov, A. A. Krasnov, E. A. Kravchenko, V. N. Kudryavtsev, V. F. Kulikov, I. A. Kuyanov, E. B. Levichev, P. V. Logachev, D. A. Maksimov, Yu. I. Maltseva, V. M. Malyshev, A. L. Maslennikov, O. I. Meshkov, S. I. Mishnev, I. A. Morozov, I. I. Morozov, D. A. Nikiforov, S. A. Nikitin, I. B. Nikolaev, I. N. Okunev, S. B. Oreshkin, A. A. Osipov, I. V. Ovtin, A. V. Pavlenko, S. V. Peleganchuk, P. A. Piminov, N. A. Podgornov, V. G. Prisekin, O. L. Rezanova, A. A. Ruban, G. A. Savinov, A. G. Shamov, L. I. Shekhtman, D. A. Shvedov, B. A. Shwartz, E. A. Simonov, S. V. Sinyatkin, A. N. Skrinsky, A. V. Sokolov, E. V. Starostina, D. P. Sukhanov, A. M. Sukharev, A. A. Talyshev, V. A. Tayursky, V. I. Telnov, Yu. A. Tikhonov, K. Yu. Todyshev, A. G. Tribendis, G. M. Tumaikin, Yu. V. Usov, A. I. Vorobiov, V. N. Zhilich, A. A. Zhukov, V. V. Zhulanov, and A. N. Zhuravlev
Subjects: e +-e − Experiments, Particle and Resonance Production, Quarkonium, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract We present the study of the decay J/ψ → ρπ. The results are based on of 5.2 million J/ψ events collected by the KEDR detector at the VEPP-4M collider. The branching fractions are measured to be B $$ \mathcal{B} $$ (J/ψ → ρπ) = (2.072 ± 0.017 ± 0.062) ∙ 10 −2 and B $$ \mathcal{B} $$ (J/ψ → π + π − π 0) = (1.878 ± 0.013 ± 0.051) ∙ 10 −2, where the first uncertainties are statistical and the second systematic. Our results are more precise than the previous relative measurements.
Published: 2023
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2. Measurement of $$J/\psi $$ J / ψ decays into final states $$2(\pi ^{+}\pi ^{-})\pi ^{0},K^{+}K^{-}\pi ^{+}\pi ^{-}\pi ^{0},\,2(\pi ^{+}\pi ^{-})$$ 2 ( π + π - ) π 0 , K + K - π + π - π 0 , 2 ( π + π - ) and $$K^{+}K^{-}\pi ^{+}\pi ^{-}$$ K + K - π + π

Author: V. V. Anashin, O. V. Anchugov, V. M. Aulchenko, E. M. Baldin, G. N. Baranov, A. K. Barladyan, A. Yu. Barnyakov, M. Yu. Barnyakov, S. E. Baru, I. Yu. Basok, A. M. Batrakov, E. A. Bekhtenev, A. E. Blinov, V. E. Blinov, A. V. Bobrov, V. S. Bobrovnikov, A. V. Bogomyagkov, A. E. Bondar, A. R. Buzykaev, P. B. Cheblakov, V. L. Dorohov, S. I. Eidelman, S. A. Glukhov, D. N. Grigoriev, V. V. Kaminskiy, S. E. Karnaev, G. V. Karpov, S. V. Karpov, K. Yu. Karukina, D. P. Kashtankin, A. A. Katsin, T. A. Kharlamova, V. A. Kiselev, V. V. Kolmogorov, S. A. Kononov, K. Yu. Kotov, A. A. Krasnov, E. A. Kravchenko, V. N. Kudryavtsev, V. F. Kulikov, E. A. Kuper, G. Ya. Kurkin, I. A. Kuyanov, E. B. Levichev, D. A. Maksimov, V. M. Malyshev, A. L. Maslennikov, O. I. Meshkov, S. I. Mishnev, I. A. Morozov, I. I. Morozov, N. Yu. Muchnoi, V. V. Neufeld, S. A. Nikitin, I. B. Nikolaev, I. N. Okunev, A. P. Onuchin, S. B. Oreshkin, A. A. Osipov, I. V. Ovtin, S. V. Peleganchuk, V. V. Petrov, P. A. Piminov, S. G. Pivovarov, V. G. Prisekin, O. L. Rezanova, A. A. Ruban, V. K. Sandyrev, G. A. Savinov, A. G. Shamov, D. N. Shatilov, L. I. Shekhtman, D. A. Shvedov, B. A. Shwartz, E. A. Simonov, S. V. Sinyatkin, A. N. Skrinsky, A. V. Sokolov, E. V. Starostina, D. P. Sukhanov, A. M. Sukharev, A. A. Talyshev, V. A. Tayursky, V. I. Telnov, Yu. A. Tikhonov, K. Yu. Todyshev, A. G. Tribendis, G. M. Tumaikin, Yu. V. Usov, A. I. Vorobiov, V. N. Zhilich, A. A. Zhukov, V. V. Zhulanov, and A. N. Zhuravlev
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Using the 1.32 $$\hbox {pb}^{-1}$$ pb - 1 statistics collected at the $$J/\psi $$ J / ψ peak with the KEDR detector at the VEPP-4M $$e^{+}e^{-\, }$$ e + e - collider, we measured the branching fractions of $$J/\psi $$ J / ψ meson decays to the final states 2( $$\pi ^{+}\pi ^{-})\pi ^{0}$$ π + π - ) π 0 , $$K^{+}K^{-}\pi ^{+}\pi ^{-}\pi ^{0}$$ K + K - π + π - π 0 , 2( $$\pi ^{+}\pi ^{-})$$ π + π - ) and $$K^{+}K^{-}\pi ^{+}\pi ^{-}$$ K + K - π + π - . The results obtained for the decays $$J/\psi \rightarrow $$ J / ψ → 2( $$\pi ^{+}\pi ^{-})\pi ^{0}$$ π + π - ) π 0 , $$J/\psi \rightarrow K^{+}K^{-}\pi ^{+}\pi ^{-}\pi ^{0}$$ J / ψ → K + K - π + π - π 0 contradict the measurements performed by other groups in the last century, but agree well with recent results of BABAR and BESIII collaborations.
Published: 2022
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3. Experiments with the KEDR Detector at the $${{e}^{ + }}{{e}^{ - }}$$ Collider VEPP-4M in the Energy Range $$\sqrt s $$ = 1.84–3.88 GeV

Author: V. V. Anashin, O. V. Anchugov, V. M. Aulchenko, S. A. Balashov, E. M. Baldin, G. N. Baranov, A. K. Barladyan, A. Yu. Barnyakov, M. Yu. Barnyakov, S. E. Baru, I. Yu. Basok, A. M. Batrakov, I. V. Bedny, E. A. Bekhtenev, A. E. Blinov, V. E. Blinov, A. V. Bobrov, V. S. Bobrovnikov, A. V. Bogomyagkov, A. E. Bondar, D. V. Bondarev, A. R. Buzykaev, P. B. Cheblakov, V. P. Cherepanov, V. L. Dorohov, S. I. Eidelman, S. A. Glukhov, Yu. M. Gluchovchenko, D. N. Grigoriev, V. R. Groshev, V. V. Gulevich, D. V. Gusev, V. V. Kaminskiy, S. E. Karnaev, G. V. Karpov, S. V. Karpov, K. Yu. Karyukina, D. P. Kashtankin, P. V. Kasyanenko, A. A. Katcin, T. A. Kharlamova, V. A. Kiselev, V. V. Kolmogorov, S. A. Kononov, K. A. Kotov, K. Yu. Kotov, A. A. Krasnov, E. A. Kravchenko, V. N. Kudryavtsev, V. F. Kulikov, G. Ya. Kurkin, I. A. Kuyanov, E. B. Levichev, D. A. Maksimov, V. M. Malyshev, A. L. Maslennikov, A. S. Medvedko, O. I. Meshkov, S. I. Mishnev, I. A. Morozov, I. I. Morozov, N. Yu. Muchnoi, A. I. Naumenkov, V. V. Neufeld, S. A. Nikitin, I. B. Nikolaev, I. N. Okunev, A. P. Onuchin, S. B. Oreshkin, I. O. Orlov, A. A. Osipov, I. V. Ovtin, Yu. A. Pakhotin, S. V. Peleganchuk, S. S. Petrosyan, V. V. Petrov, P. A. Piminov, S. G. Pivovarov, N. A. Podgornov, A. O. Poluektov, A. A. Polunin, I. N. Popkov, G. E. Pospelov, I. Ya. Protopopov, V. G. Prisekin, O. L. Rezanova, A. A. Ruban, V. K. Sandyrev, G. A. Savinov, A. G. Shamov, D. N. Shatilov, L. I. Shekhtman, E. I. Shubin, D. A. Shvedov, B. A. Shwartz, V. A. Sidorov, E. A. Simonov, S. V. Sinyatkin, A. N. Skrinsky, V. V. Smaluk, A. V. Sokolov, E. V. Starostina, M. V. Struchalin, D. P. Sukhanov, A. M. Sukharev, A. A. Talyshev, V. A. Tayursky, V. I. Telnov, Yu. A. Tikhonov, K. Yu. Todyshev, A. G. Tribendis, G. M. Tumaikin, Yu. V. Usov, A. I. Vorobiov, A. V. Zatsepin, V. N. Zhilich, A. A. Zhukov, V. V. Zhulanov, A. N. Zhuravlev, and A. N. Yushkov
Subjects: Nuclear and High Energy Physics
Published: 2023

4. Measurement of $$J/\psi $$ decays into final states $$2(\pi ^{+}\pi ^{-})\pi ^{0},K^{+}K^{-}\pi ^{+}\pi ^{-}\pi ^{0},\,2(\pi ^{+}\pi ^{-})$$ and $$K^{+}K^{-}\pi ^{+}\pi ^{-}$$

Author: V. V. Anashin, O. V. Anchugov, V. M. Aulchenko, E. M. Baldin, G. N. Baranov, A. K. Barladyan, A. Yu. Barnyakov, M. Yu. Barnyakov, S. E. Baru, I. Yu. Basok, A. M. Batrakov, E. A. Bekhtenev, A. E. Blinov, V. E. Blinov, A. V. Bobrov, V. S. Bobrovnikov, A. V. Bogomyagkov, A. E. Bondar, A. R. Buzykaev, P. B. Cheblakov, V. L. Dorohov, S. I. Eidelman, S. A. Glukhov, D. N. Grigoriev, V. V. Kaminskiy, S. E. Karnaev, G. V. Karpov, S. V. Karpov, K. Yu. Karukina, D. P. Kashtankin, A. A. Katsin, T. A. Kharlamova, V. A. Kiselev, V. V. Kolmogorov, S. A. Kononov, K. Yu. Kotov, A. A. Krasnov, E. A. Kravchenko, V. N. Kudryavtsev, V. F. Kulikov, E. A. Kuper, G. Ya. Kurkin, I. A. Kuyanov, E. B. Levichev, D. A. Maksimov, V. M. Malyshev, A. L. Maslennikov, O. I. Meshkov, S. I. Mishnev, I. A. Morozov, I. I. Morozov, N. Yu. Muchnoi, V. V. Neufeld, S. A. Nikitin, I. B. Nikolaev, I. N. Okunev, A. P. Onuchin, S. B. Oreshkin, A. A. Osipov, I. V. Ovtin, S. V. Peleganchuk, V. V. Petrov, P. A. Piminov, S. G. Pivovarov, V. G. Prisekin, O. L. Rezanova, A. A. Ruban, V. K. Sandyrev, G. A. Savinov, A. G. Shamov, D. N. Shatilov, L. I. Shekhtman, D. A. Shvedov, B. A. Shwartz, E. A. Simonov, S. V. Sinyatkin, A. N. Skrinsky, A. V. Sokolov, E. V. Starostina, D. P. Sukhanov, A. M. Sukharev, A. A. Talyshev, V. A. Tayursky, V. I. Telnov, Yu. A. Tikhonov, K. Yu. Todyshev, A. G. Tribendis, G. M. Tumaikin, Yu. V. Usov, A. I. Vorobiov, V. N. Zhilich, A. A. Zhukov, V. V. Zhulanov, and A. N. Zhuravlev
Subjects: Physics and Astronomy (miscellaneous), Engineering (miscellaneous)
Abstract: Using the 1.32 $$\hbox {pb}^{-1}$$ pb - 1 statistics collected at the $$J/\psi $$ J / ψ peak with the KEDR detector at the VEPP-4M $$e^{+}e^{-\, }$$ e + e - collider, we measured the branching fractions of $$J/\psi $$ J / ψ meson decays to the final states 2($$\pi ^{+}\pi ^{-})\pi ^{0}$$ π + π - ) π 0 , $$K^{+}K^{-}\pi ^{+}\pi ^{-}\pi ^{0}$$ K + K - π + π - π 0 , 2($$\pi ^{+}\pi ^{-})$$ π + π - ) and $$K^{+}K^{-}\pi ^{+}\pi ^{-}$$ K + K - π + π - . The results obtained for the decays $$J/\psi \rightarrow $$ J / ψ → 2($$\pi ^{+}\pi ^{-})\pi ^{0}$$ π + π - ) π 0 , $$J/\psi \rightarrow K^{+}K^{-}\pi ^{+}\pi ^{-}\pi ^{0}$$ J / ψ → K + K - π + π - π 0 contradict the measurements performed by other groups in the last century, but agree well with recent results of BABAR and BESIII collaborations.
Published: 2022

5. The anomalous magnetic moment of the muon in the Standard Model

Author: T. Kinoshita, B.A. Shwartz, Christian S. Fischer, V. Gülpers, Bogdan Malaescu, M.N. Achasov, Vladyslav Pauk, Carleton DeTar, Martin Hoferichter, Thomas Teubner, Fred Jegerlehner, I. Caprini, Johan Bijnens, Konstantin Ottnad, Renwick J. Hudspith, V. P. Druzhinin, Esther Weil, D. W. Hertzog, D. Stöckinger, J. Charles, R. S. Van de Water, Maarten Golterman, Stefan E. Müller, Gilberto Colangelo, Nuno Cardoso, D. Nomura, C. M. Carloni Calame, Jonna Koponen, Taku Izubuchi, A. Denig, Santiago Peris, Franziska Hagelstein, Jeremy Green, Andreas Nyffeler, K. Yu. Todyshev, C. F. Redmer, M. Della Morte, Zhiqing Zhang, B. L. Roberts, F. Curciarello, Cesareo A. Dominguez, S. Holz, Richard Williams, Laetitia Laub, Hartmut Wittig, Henryk Czyz, B.-L. Hoid, Antoine Gérardin, S.I. Eidelman, Daniel Mohler, I. Danilkin, Bastian Kubis, E. P. Solodov, Elvira Gamiz, E. de Rafael, H. Stöckinger-Kim, Gregorio Herdoiza, J. Monnard, M. Davier, T. San José, Laurent Lellouch, T. Aoyama, Aida X. El-Khadra, Nils Hermansson-Truedsson, Steven Gottlieb, I.B. Logashenko, Antonio Rodríguez-Sánchez, Marina Marinkovic, M. Bruno, Tom Blum, Nils Asmussen, Luchang Jin, A. Hoecker, M. Fael, Peter Stoffer, Aaron S. Meyer, K. Raya, T. Mibe, D. Giusti, M. Benayoun, Jack Laiho, Kim Maltman, K. Miura, Marco Cè, Pablo Roig, Craig McNeile, S. I. Serednyakov, G. von Hippel, A. V. Nesterenko, F. Ignatov, M. Knecht, D. Hatton, Christoph Lehner, Pere Masjuan, A. Vaquero Avilés-Casco, Massimiliano Procura, A. Kupich, A. E. Radzhabov, Silvano Simula, Vladimir Pascalutsa, M. Nio, A. Keshavarzi, A. Bashir, Marc Vanderhaeghen, Antonin Portelli, Andreas S. Kronfeld, M. Passera, E. Perez del Rio, W. J. Marciano, Z. Gelzer, S. Leupold, E.-H. Chao, Pablo Sanchez-Puertas, S. Guellati-Khelifa, Christine Davies, Ethan T. Neil, Masashi Hayakawa, B. Hörz, A. E. Dorokhov, Gernot Eichmann, Andreas Crivellin, Robert L. Sugar, G. Venanzoni, P. B. Mackenzie, O. Deineka, A. S. Zhevlakov, A. Kupść, Jonas Wilhelm, Harvey B. Meyer, Arkady Vainshtein, Bipasha Chakraborty, Andreas Risch, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Kastler Brossel (LKB [Collège de France]), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Aoyama, T, Asmussen, N, Benayoun, M, Bijnens, J, Blum, T, Bruno, M, Caprini, I, Carloni Calame, C, Ce, M, Colangelo, G, Curciarello, F, Czyz, H, Danilkin, I, Davier, M, Davies, C, Della Morte, M, Eidelman, S, El-Khadra, A, Gerardin, A, Giusti, D, Golterman, M, Gottlieb, S, Gulpers, V, Hagelstein, F, Hayakawa, M, Herdoiza, G, Hertzog, D, Hoecker, A, Hoferichter, M, Hoid, B, Hudspith, R, Ignatov, F, Izubuchi, T, Jegerlehner, F, Jin, L, Keshavarzi, A, Kinoshita, T, Kubis, B, Kupich, A, Kupsc, A, Laub, L, Lehner, C, Lellouch, L, Logashenko, I, Malaescu, B, Maltman, K, Marinkovic, M, Masjuan, P, Meyer, A, Meyer, H, Mibe, T, Miura, K, Muller, S, Nio, M, Nomura, D, Nyffeler, A, Pascalutsa, V, Passera, M, Perez del Rio, E, Peris, S, Portelli, A, Procura, M, Redmer, C, Roberts, B, Sanchez-Puertas, P, Serednyakov, S, Shwartz, B, Simula, S, Stockinger, D, Stockinger-Kim, H, Stoffer, P, Teubner, T, Van de Water, R, Vanderhaeghen, M, Venanzoni, G, von Hippel, G, Wittig, H, Zhang, Z, Achasov, M, Bashir, A, Cardoso, N, Chakraborty, B, Chao, E, Charles, J, Crivellin, A, Deineka, O, Denig, A, Detar, C, Dominguez, C, Dorokhov, A, Druzhinin, V, Eichmann, G, Fael, M, Fischer, C, Gamiz, E, Gelzer, Z, Green, J, Guellati-Khelifa, S, Hatton, D, Hermansson-Truedsson, N, Holz, S, Horz, B, Knecht, M, Koponen, J, Kronfeld, A, Laiho, J, Leupold, S, Mackenzie, P, Marciano, W, Mcneile, C, Mohler, D, Monnard, J, Neil, E, Nesterenko, A, Ottnad, K, Pauk, V, Radzhabov, A, de Rafael, E, Raya, K, Risch, A, Rodriguez-Sanchez, A, Roig, P, San Jose, T, Solodov, E, Sugar, R, Todyshev, K, Vainshtein, A, Vaquero Aviles-Casco, A, Weil, E, Wilhelm, J, Williams, R, Zhevlakov, A, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Collège de France (CdF (institution))
Subjects: Standard Model, Nuclear Theory, magnetic, higher-order, Physics beyond the Standard Model, General Physics and Astronomy, nucl-ex, 01 natural sciences, High Energy Physics - Experiment, Subatomär fysik, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Subatomic Physics, quantum electrodynamics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Vacuum polarization, Nuclear Experiment (nucl-ex), Nuclear Experiment, fundamental constant: fine structure, Physics, Quantum chromodynamics, QED, Anomalous magnetic dipole moment, new physics, J-PARC Lab, High Energy Physics - Lattice (hep-lat), Electroweak interaction, lattice field theory, Particle Physics - Lattice, hep-ph, Observable, High Energy Physics - Phenomenology, Nuclear Physics - Theory, Particle Physics - Experiment, Particle physics, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], nucl-th, 530 Physics, dispersion relation, g-2, Lattice field theory, FOS: Physical sciences, hep-lat, nonperturbative, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Muon magnetic moment, Nuclear Theory (nucl-th), High Energy Physics - Lattice, muon, quantum chromodynamics, 0103 physical sciences, ddc:530, Nuclear Physics - Experiment, 010306 general physics, activity report, perturbation theory, Particle Physics - Phenomenology, Muon, muon: magnetic moment, electroweak interaction, [PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat], hep-ex, 010308 nuclear & particles physics, vacuum polarization: hadronic, High Energy Physics::Phenomenology, photon photon: scattering, anomalous magnetic moment, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment
Abstract: We are very grateful to the Fermilab Directorate and the Fermilab Theoretical Physics Department for their financial and logistical support of the first workshop of the Muon g -2 Theory Initiative (held near Fermilab in June 2017) [123], which was crucial for its success, and indeed for the successful start of the Initiative. Financial support for this workshop was also provided by the Fermilab Distinguished Scholars program, the Universities Research Association through a URA Visiting Scholar award, the Riken Brookhaven Research Center, and the Japan Society for the Promotion of Science under Grant No. KAKEHNHI-17H02906. We thank Shoji Hashimoto, Toru Iijima, Takashi Kaneko, and Shohei Nishida for hosting the HVP workshop at KEK [124] and the KEK Theory Center and the U.S.-Japan Science and Technology Cooperation Program in High Energy Physics for providing logistical and financial support. The HLbL workshop at the University of Connecticut [125] was hosted by the University of Connecticut Physics Department. We also gratefully acknowledge support for the second plenary workshop in Mainz [126] from the Deutsche Forschungsgemeinschaft via the Cluster of Excellence "Precision Physics, Fundamental Interactions and Structure of Matter'' (PRISMA), the Collaborative Research Centre "The low-energy frontier of the Standard Model'' (SFB 1044), as well as the Helmholtz Institute Mainz. And finally, we thank the Institute for Nuclear Theory at the University of Washington for hosting the third plenary workshop [127] and for its kind hospitality and stimulating research environment. This workshop was supported in part by the U.S. Department of Energy, Office of Science, under Award Nos. DE-FG02-00ER41132, DE-SC0020106, and by the U.S.-Japan Science and Technology Cooperation Program in High Energy Physics. This review benefited from discussions with O. Cata, N. Christ, L.Y. Dai, H. Davoudiasl, S. Fayer, S. Ganguly, A. Gasparian, S. Hashimoto, T. Iijima, K. Kampf, D. Kawall, I. Larin, Z. Pagel, M. Petschlies, A. Rebhan, K. Schilcher, K. Shimomura, E. Shintani, D. Steffen, S. Tracz, C. Tu, and T. Yamazaki. The work in this paper was supported by CNRS, by Conacyt (Ciencia Basica 2015) under Grant No. 250628, by CONACyT-Mexico under Grant No. CB2014-22117, by Coordinacion de la Investigacion Cientifica (CIC-UMSNH) under Grant No. 4.10, by Danmarks Frie Forskningsfond under Grant No. 8021-00122B, by Deutsche Forschungsgemeinschaft Collaborative Research Centers CRC 1044, CRC 1044 -204404729, CRC 110, and under Grant No. HI 2048/1-1, Prisma Cluster for Excellence PRISMA+ EXC2118/1, STO/876/6-1, by European Research Council under the European Union's Horizon 2020 research and innovation programme under Grant Agreement Nos. 668679, 757646, 771971-SIMDAMA, 813942, by the European Union H2020-MSCA-COFUND2016 under Grant No. 754510, by the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant Agreement No. 843134, by European Union EuroPLEx Grant H2020-MSCA-ITN-2018-813942, by European Union STRONG 2020 project under Grant Agreement No. 824093, by the Excellence Initiative of Aix-Marseille University -A*MIDEX, a French "Investissements d'Avenir" program, through the Chaire d'Excellence program and the OCEVU Laboratoire d'Excellence (ANR-11-LABX-0060), by the Fermilab Distinguished Scholars program, by Fondo SEP-Cinvestav under Grant No. 142, Fundacao para a Ciencia e a Tecnologia under Grant No. SFRH/BPD/109443/2015, by Generalitat de Catalunya under Grant No. 2017SGR1069, by the Helmholtz Association (German Federal Ministry of Education and Research), by the Helmholtz-Institut Mainz, by the Istituto Nazionale di Fisica Nucleare (INFN), by the Isaac Newton Trust, by the Japan Society for the Promotion of Science under Grant Nos. KAKENHI-15H05742, 16K05317, 16K05323, 16K05338, 17H01133, 17H02906, 18H05226, 19K21872, 20K03926, 20K03960, by Junta de Andalucia under Grant No. A-FQM-467-UGR18, by KEK, by Ministerio de Ciencia e Innovacion under Grant No. CICYTFEDER-FPA2017-86989-P, by Ministerio de Industria, Economia y Competitividad under Grant Nos. FPA2016-78220-C3-3-P, FPA2017-86989-P, PGC2018-094857-B-I00, SEV-2016-0588, SEV-2016-0597, by Laboratoires d'Excellence FIRST-TF grants, a French "Investissements d'Avenir'' program, by the Ministry of Science and Higher Education of the Russian Federation under Grant Agreement No. 14.W03.31.0026, by the National Research Foundation of South Africa, by the Natural Sciences and Engineering Research Council of Canada, by the Portuguese Science Foundation (FCT) Investigator Grant IF/00898/2015, by the Romanian Ministry of Education and Research under Grant No. PN19060101, by the Russian Science Foundation under Grant No. RSF 18-12-00128, by the Secretaria d'Universitats i Recerca del Departament d'Economia i Coneixement de la Generalitat de Catalunya under Grant No. 2017 SGR 1069, by the Swedish Research Council under Grant Nos. 2016-05996, 2019-03779, by the Swiss National Science Foundation under Grant Nos. PP00P2_176884, PCEFP2_181117, by The Leverhulme Trust under Grant No. ECF-2019-223, by the UK Science and Technology Facilities Council (STFC) under Grant Nos. ST/N504130/1, ST/P000290/1, ST/P00055X/1, ST/P000630/1, ST/P000711/1, ST/P000746/1, ST/S000879/1, ST/S000925/1, by the U.S. Department of Energy, Office of Science, Office of High Energy Physics under Award Nos. DE-SC0009919, DE-SC0009998, DE-SC0010005, DE-SC0010120, DE-SC0010339, DE-SC0012391, DE-SC0012704, DE-SC0013682, DE-SC0013895, DE-SC0015655, by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Award Nos. DE-AC02-05CH11231, DE-FG02-00ER41132, DE-FG02-97ER41020, by the U.S.-Japan Science and Technology Cooperation Program in High Energy Physics, "Incubation Platform for Intensity Frontier", by the U.S. National Science Foundation under Grant Nos. NSF-PHY-1316222, PHY14-14614, PHY17-19626, and PHY19-23131, and by the U.S. National Institute of Standards and Technology (NIST) Precision Measurement Grant Program under Award No. 60NANB16D271. This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics., We review the present status of the Standard Model calculation of the anomalous magnetic moment of the muon. This is performed in a perturbative expansion in the fine-structure constant and is broken down into pure QED, electroweak, and hadronic contributions. The pure QED contribution is by far the largest and has been evaluated up to and including with negligible numerical uncertainty. The electroweak contribution is suppressed by and only shows up at the level of the seventh significant digit. It has been evaluated up to two loops and is known to better than one percent. Hadronic contributions are the most difficult to calculate and are responsible for almost all of the theoretical uncertainty. The leading hadronic contribution appears at and is due to hadronic vacuum polarization, whereas at the hadronic light-by-light scattering contribution appears. Given the low characteristic scale of this observable, these contributions have to be calculated with nonperturbative methods, in particular, dispersion relations and the lattice approach to QCD. The largest part of this review is dedicated to a detailed account of recent efforts to improve the calculation of these two contributions with either a data-driven, dispersive approach, or a first-principle, lattice-QCD approach. The final result reads and is smaller than the Brookhaven measurement by 3.7. The experimental uncertainty will soon be reduced by up to a factor four by the new experiment currently running at Fermilab, and also by the future J-PARC experiment. This and the prospects to further reduce the theoretical uncertainty in the near future – which are also discussed here – make this quantity one of the most promising places to look for evidence of new physics., Fermilab Directorate, Fermilab Theoretical Physics Department, Fermilab Distinguished Scholars program, Universities Research Association through a URA Visiting Scholar award, Riken Brookhaven Research Center, Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Japan Society for the Promotion of Science KAKEHNHI-17H02906 KAKENHI-15H05742 16K05317 16K05323 16K05338 17H01133 17H02906 18H05226 19K21872 20K03926 20K03960, High Energy Accelerator Research Organization (KEK), U.S.-Japan Science and Technology Cooperation Program in High Energy Physics, Deutsche Forschungsgemeinschaft via the Cluster of Excellence "Precision Physics, Fundamental Interactions and Structure of Matter'' (PRISMA), Collaborative Research Centre "The low-energy frontier of the Standard Model'' SFB 1044, Helmholtz Institute Mainz, United States Department of Energy (DOE) DE-FG02-00ER41132 DE-SC0020106, Centre National de la Recherche Scientifique (CNRS), Conacyt (Ciencia Basica 2015) 250628, Consejo Nacional de Ciencia y Tecnologia (CONACyT) CB2014-22117, Coordinacion de la Investigacion Cientifica (CIC-UMSNH) 4.10, Danmarks Frie Forskningsfond 8021-00122B, German Research Foundation (DFG) CRC 1044 CRC 1044 -204404729 CRC 110 HI 2048/1-1, Prisma Cluster for Excellence PRISMA+ EXC2118/1 STO/876/6-1, European Research Council (ERC) 668679 757646 771971-SIMDAMA 813942, European Union (EU) 754510, European Union (EU) 843134, European Union EuroPLEx Grant H2020-MSCA-ITN-2018-813942, European Union STRONG 2020 project 824093, French National Research Agency (ANR), OCEVU Laboratoire d'Excellence ANR-11-LABX-0060, Fondo SEP-Cinvestav 142, Portuguese Foundation for Science and Technology SFRH/BPD/109443/2015, Generalitat de Catalunya 2017SGR1069, Helmholtz Association (German Federal Ministry of Education and Research), Istituto Nazionale di Fisica Nucleare (INFN), Isaac Newton Trust, Junta de Andalucia A-FQM-467-UGR18, Instituto de Salud Carlos III Spanish Government CICYTFEDER-FPA2017-86989-P, Ministerio de Industria, Economia y Competitividad FPA2016-78220-C3-3-P FPA2017-86989-P PGC2018-094857-B-I00 SEV-2016-0588 SEV-2016-0597, Laboratoires d'Excellence FIRST-TF grants, Ministry of Science and Higher Education of the Russian Federation 14.W03.31.0026, National Research Foundation - South Africa, Natural Sciences and Engineering Research Council of Canada (NSERC) CGIAR, Portuguese Science Foundation (FCT) Investigator Grant IF/00898/2015, Romanian Ministry of Education and Research PN19060101, Russian Science Foundation (RSF) RSF 18-12-00128, Generalitat de Catalunya 2017 SGR 1069, Swedish Research Council 2016-05996 2019-03779, Swiss National Science Foundation (SNSF) PP00P2_176884 PCEFP2_181117, Leverhulme Trust ECF-2019-223, UK Research & Innovation (UKRI) Science & Technology Facilities Council (STFC) ST/N504130/1 ST/P000290/1 ST/P00055X/1 ST/P000630/1 ST/P000711/1 ST/P000746/1 ST/S000879/1 ST/S000925/1, United States Department of Energy (DOE) DE-SC0009919 DE-SC0009998 DE-SC0010005 DE-SC0010120 DE-SC0010339 DE-SC0012391 DE-SC0012704 DE-SC0013682 DE-SC0013895 DE-SC0015655, United States Department of Energy (DOE) DE-FG02-00ER41132 DE-AC02-05CH11231 DE-FG02-97ER41020 DE-AC02-07CH11359, U.S.-Japan Science and Technology Cooperation Program in High Energy Physics, "Incubation Platform for Intensity Frontier", National Science Foundation (NSF) NSF-PHY-1316222 PHY14-14614 PHY17-19626 PHY19-23131, U.S. National Institute of Standards and Technology (NIST) Precision Measurement Grant 60NANB16D271
Published: 2020

6. Measuring the inclusive cross section of e+e− annihilation into hadrons in the pre-asymptotic energy range

Author: K. Yu. Todyshev
Subjects: Nuclear physics, Physics, Cross section (physics), Range (particle radiation), Annihilation, Hadron, General Physics and Astronomy, Energy (signal processing)
Abstract: Among the observed variety of the natural phenomena reflected in experimental results, there are just a few physical features offering a view of a given fragment of the mosaic of physical laws in its entirety. One such remarkable fundamental feature is R, the ratio of the inclusive cross section of electron–positron annihilation into hadrons to the cross section of muon pair production in the Born approximation. We discuss experiments on measuring the R(s) ratio in the energy range 1.84–3.72 GeV.
Published: 2020

7. Search for an Axionlike Particle in B Meson Decays

Author: J P, Lees, V, Poireau, V, Tisserand, E, Grauges, A, Palano, G, Eigen, D N, Brown, Yu G, Kolomensky, M, Fritsch, H, Koch, T, Schroeder, R, Cheaib, C, Hearty, T S, Mattison, J A, McKenna, R Y, So, V E, Blinov, A R, Buzykaev, V P, Druzhinin, V B, Golubev, E A, Kozyrev, E A, Kravchenko, A P, Onuchin, S I, Serednyakov, Yu I, Skovpen, E P, Solodov, K Yu, Todyshev, A J, Lankford, B, Dey, J W, Gary, O, Long, A M, Eisner, W S, Lockman, W, Panduro Vazquez, D S, Chao, C H, Cheng, B, Echenard, K T, Flood, D G, Hitlin, J, Kim, Y, Li, D X, Lin, S, Middleton, T S, Miyashita, P, Ongmongkolkul, J, Oyang, F C, Porter, M, Röhrken, Z, Huard, B T, Meadows, B G, Pushpawela, M D, Sokoloff, L, Sun, J G, Smith, S R, Wagner, D, Bernard, M, Verderi, D, Bettoni, C, Bozzi, R, Calabrese, G, Cibinetto, E, Fioravanti, I, Garzia, E, Luppi, V, Santoro, A, Calcaterra, R, de Sangro, G, Finocchiaro, S, Martellotti, P, Patteri, I M, Peruzzi, M, Piccolo, M, Rotondo, A, Zallo, S, Passaggio, C, Patrignani, I, Flood, N, Nguyen, B J, Shuve, H M, Lacker, B, Bhuyan, U, Mallik, C, Chen, J, Cochran, S, Prell, A V, Gritsan, N, Arnaud, M, Davier, F, Le Diberder, A M, Lutz, G, Wormser, D J, Lange, D M, Wright, J P, Coleman, E, Gabathuler, D E, Hutchcroft, D J, Payne, C, Touramanis, A J, Bevan, F, Di Lodovico, R, Sacco, G, Cowan, Sw, Banerjee, C L, Davis, A G, Denig, W, Gradl, K, Griessinger, A, Hafner, K R, Schubert, R J, Barlow, G D, Lafferty, R, Cenci, A, Jawahery, D A, Roberts, R, Cowan, S H, Robertson, R M, Seddon, N, Neri, F, Palombo, L, Cremaldi, R, Godang, D J, Summers, P, Taras, G, De Nardo, C, Sciacca, G, Raven, C P, Jessop, J M, LoSecco, K, Honscheid, R, Kass, A, Gaz, M, Margoni, M, Posocco, G, Simi, F, Simonetto, R, Stroili, S, Akar, E, Ben-Haim, M, Bomben, G R, Bonneaud, G, Calderini, J, Chauveau, G, Marchiori, J, Ocariz, M, Biasini, E, Manoni, A, Rossi, G, Batignani, S, Bettarini, M, Carpinelli, G, Casarosa, M, Chrzaszcz, M, De Nuccio, F, Forti, M A, Giorgi, A, Lusiani, B, Oberhof, E, Paoloni, M, Rama, G, Rizzo, J J, Walsh, L, Zani, A J S, Smith, F, Anulli, R, Faccini, F, Ferrarotto, F, Ferroni, A, Pilloni, G, Piredda, C, Bünger, S, Dittrich, O, Grünberg, M, Heß, T, Leddig, C, Voß, R, Waldi, T, Adye, F F, Wilson, S, Emery, G, Vasseur, D, Aston, C, Cartaro, M R, Convery, J, Dorfan, W, Dunwoodie, M, Ebert, R C, Field, B G, Fulsom, M T, Graham, C, Hast, W R, Innes, P, Kim, D W G S, Leith, S, Luitz, D B, MacFarlane, D R, Muller, H, Neal, B N, Ratcliff, A, Roodman, M K, Sullivan, J, Va'vra, W J, Wisniewski, M V, Purohit, J R, Wilson, A, Randle-Conde, S J, Sekula, H, Ahmed, N, Tasneem, M, Bellis, P R, Burchat, E M T, Puccio, M S, Alam, J A, Ernst, R, Gorodeisky, N, Guttman, D R, Peimer, A, Soffer, S M, Spanier, J L, Ritchie, R F, Schwitters, J M, Izen, X C, Lou, F, Bianchi, F, De Mori, A, Filippi, D, Gamba, L, Lanceri, L, Vitale, F, Martinez-Vidal, A, Oyanguren, J, Albert, A, Beaulieu, F U, Bernlochner, G J, King, R, Kowalewski, T, Lueck, C, Miller, I M, Nugent, J M, Roney, R J, Sobie, T J, Gershon, P F, Harrison, T E, Latham, R, Prepost, S L, Wu, Lees, J, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, D, Kolomensky, Y, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, Hearty, C, Mattison, T, Mckenna, J, So, R, Blinov, V, Buzykaev, A, Druzhinin, V, Golubev, V, Kozyrev, E, Kravchenko, E, Onuchin, A, Serednyakov, S, Skovpen, Y, Solodov, E, Todyshev, K, Lankford, A, Dey, B, Gary, J, Long, O, Eisner, A, Lockman, W, Panduro Vazquez, W, Chao, D, Cheng, C, Echenard, B, Flood, K, Hitlin, D, Kim, J, Li, Y, Lin, D, Middleton, S, Miyashita, T, Ongmongkolkul, P, Oyang, J, Porter, F, Röhrken, M, Huard, Z, Meadows, B, Pushpawela, B, Sokoloff, M, Sun, L, Smith, J, Wagner, S, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, de Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, I, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Flood, I, Nguyen, N, Shuve, B, Lacker, H, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, A, Arnaud, N, Davier, M, Le Diberder, F, Lutz, A, Wormser, G, Lange, D, Wright, D, Coleman, J, Gabathuler, E, Hutchcroft, D, Payne, D, Touramanis, C, Bevan, A, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, C, Denig, A, Gradl, W, Griessinger, K, Hafner, A, Schubert, K, Barlow, R, Lafferty, G, Cenci, R, Jawahery, A, Roberts, D, Cowan, R, Robertson, S, Seddon, R, Neri, N, Palombo, F, Cremaldi, L, Godang, R, Summers, D, Taras, P, De Nardo, G, Sciacca, C, Raven, G, Jessop, C, Losecco, J, Honscheid, K, Kass, R, Gaz, A, Margoni, M, Posocco, M, Simi, G, Simonetto, F, Stroili, R, Akar, S, Ben-Haim, E, Bomben, M, Bonneaud, G, Calderini, G, Chauveau, J, Marchiori, G, Ocariz, J, Biasini, M, Manoni, E, Rossi, A, Batignani, G, Bettarini, S, Carpinelli, M, Casarosa, G, Chrzaszcz, M, De Nuccio, M, Forti, F, Giorgi, M, Lusiani, A, Oberhof, B, Paoloni, E, Rama, M, Rizzo, G, Walsh, J, Zani, L, Smith, A, Anulli, F, Faccini, R, Ferrarotto, F, Ferroni, F, Pilloni, A, Piredda, G, Bünger, C, Dittrich, S, Grünberg, O, Heß, M, Leddig, T, Voß, C, Waldi, R, Adye, T, Wilson, F, Emery, S, Vasseur, G, Aston, D, Cartaro, C, Convery, M, Dorfan, J, Dunwoodie, W, Ebert, M, Field, R, Fulsom, B, Graham, M, Hast, C, Innes, W, Kim, P, Leith, D, Luitz, S, Macfarlane, D, Muller, D, Neal, H, Ratcliff, B, Roodman, A, Sullivan, M, Va'Vra, J, Wisniewski, W, Purohit, M, Wilson, J, Randle-Conde, A, Sekula, S, Ahmed, H, Tasneem, N, Bellis, M, Burchat, P, Puccio, E, Alam, M, Ernst, J, Gorodeisky, R, Guttman, N, Peimer, D, Soffer, A, Spanier, S, Ritchie, J, Schwitters, R, Izen, J, Lou, X, Bianchi, F, De Mori, F, Filippi, A, Gamba, D, Lanceri, L, Vitale, L, Martinez-Vidal, F, Oyanguren, A, Albert, J, Beaulieu, A, Bernlochner, F, King, G, Kowalewski, R, Lueck, T, Miller, C, Nugent, I, Roney, J, Sobie, R, Gershon, T, Harrison, P, Latham, T, Prepost, R, Wu, S, Lees, J P, Brown, D N, Kolomensky, Yu G, Mattison, T S, McKenna, J A, So, R Y, Blinov, V E, Buzykaev, A R, Druzhinin, V P, Golubev, V B, Kozyrev, E A, Kravchenko, E A, Onuchin, A P, Serednyakov, S I, Skovpen, Yu I, Solodov, E P, Todyshev, K Yu, Lankford, A J, Gary, J W, Eisner, A M, Lockman, W S, Chao, D S, Cheng, C H, Flood, K T, Hitlin, D G, Lin, D X, Miyashita, T S, Porter, F C, Meadows, B T, Pushpawela, B G, Sokoloff, M D, Smith, J G, Wagner, S R, Peruzzi, I M, Shuve, B J, Lacker, H M, Gritsan, A V, Lutz, A M, Lange, D J, Wright, D M, Coleman, J P, Hutchcroft, D E, Payne, D J, Bevan, A J, Banerjee, Sw, Davis, C L, Denig, A G, Schubert, K R, Barlow, R J, Lafferty, G D, Roberts, D A, Robertson, S H, Seddon, R M, Summers, D J, Jessop, C P, LoSecco, J M, Bonneaud, G R, Giorgi, M A, Walsh, J J, Smith, A J S, Wilson, F F, Convery, M R, Field, R C, Fulsom, B G, Graham, M T, Innes, W R, Leith, D W G S, MacFarlane, D B, Muller, D R, Ratcliff, B N, Sullivan, M K, Va'vra, J, Wisniewski, W J, Purohit, M V, Wilson, J R, Sekula, S J, Burchat, P R, Puccio, E M T, Alam, M S, Ernst, J A, Peimer, D R, Spanier, S M, Ritchie, J L, Schwitters, R F, Izen, J M, Lou, X C, Bernlochner, F U, King, G J, Nugent, I M, Roney, J M, Sobie, R J, Gershon, T J, Harrison, P F, Latham, T E, Wu, S L, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, BaBar, Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Y. G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. S., Mckenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Y. I., Solodov, E. P., Todyshev, K. Y., Lankford, A. J., Dey, B., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Panduro Vazquez, W., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Lin, D. X., Middleton, S., Miyashita, T. S., Ongmongkolkul, P., Oyang, J., Porter, F. C., Rohrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., De Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Flood, I., Nguyen, N., Shuve, B. J., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Le Diberder, F., Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, S. W., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., Losecco, J. M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., De Nuccio, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bunger, C., Dittrich, S., Grunberg, O., Hess, M., Leddig, T., Voss, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., Macfarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'Vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Ahmed, H., Tasneem, N., Bellis, M., Burchat, P. R., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Spanier, S. M., Ritchie, J. L., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Miller, C., Nugent, I. M., Roney, J. M., Sobie, R. J., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., Wu, S. L., Mckenna, J A, Losecco, J M, and Macfarlane, D B
Subjects: flavor changing, General Physics and Astronomy, B meson, High Energy Physics - Experiment, current: constraint, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], QC, B meson decay, scale: electroweak interaction, article, electron positron: colliding beams, mass dependence, The standard model, Confidence level, PEP-II, axion-like particles, axion: mass, photon: pair production, boson, axionlike particles, FOS: Physical sciences, coupling constant: upper limit, Bottom mesons, electron positron: annihilation, meson, Physics::Geophysics, BABAR experiment, B: rare decay, Bosons, Electroweak boson, axionlike particle, High Energy Physics::Phenomenology, ALPs, Particle ma, Upper limit, Bottom meson, Rare decays, SLAC PEP Stor, current, axion: radiative decay, HEP, Electroweak scale, Germanium compound, Orders of magnitude, Rare decay, axion, Hadron, BaBar, coupling: (axion 2photon), High Energy Physics::Experiment, experimental results
Abstract: Axion-like particles (ALPs) are predicted in many extensions of the Standard Model, and their masses can naturally be well below the electroweak scale. In the presence of couplings to electroweak bosons, these particles could be emitted in flavor-changing $B$ meson decays. We report herein a search for an ALP, $a$, in the reaction $B^\pm\rightarrow K^\pm a$, $a\rightarrow\gamma\gamma$ using data collected by the BABAR experiment at SLAC. No significant signal is observed, and 90% confidence level upper limits on the ALP coupling to electroweak bosons are derived as a function of ALP mass, improving current constraints by several orders of magnitude in the range $0.175\,\,\mathrm{GeV} < m_a < 4.78\,\,\mathrm{GeV}$., Comment: 11 pages, 8 figures, submitted to Phys. Rev. Lett
Published: 2022

8. Light meson spectroscopy from Dalitz plot analyses of ηc decays to η′K+K− , η′π+π− , and ηπ+π− produced in two-photon interactions

Author: Z. C. Huard, U. Mallik, Yu. I. Skovpen, T. S. Miyashita, N. Neri, F. Anulli, E. Grauges, G. R. Bonneaud, Mario Giorgi, J. Dorfan, E. Fioravanti, F. Palombo, T. Lueck, Alessandro Gaz, B. N. Ratcliff, G. J. King, Elisa Manoni, F. Di Lodovico, A. M. Rossi, M. Verderi, N. Arnaud, J. L. Ritchie, L. M. Cremaldi, R. Y. So, A. Roodman, M. Rotondo, D. J. Payne, J. W. Gary, M. Ebert, S. H. Robertson, S. Bettarini, R. M. Seddon, F. Ferroni, R. Cenci, G. De Nardo, A. J. Bevan, Herbert Koch, Crisostomo Sciacca, D. Aston, A. Zallo, J. B. Kim, G. Rizzo, P. F. Harrison, D. G. Hitlin, W. J. Wisniewski, N. Tasneem, M. Fritsch, B. T. Meadows, G. Raven, K. Griessinger, S. M. Spanier, Tim Adye, A. Oyanguren, Stephen Robert Wagner, Aidan Randle-Conde, R. D. Kass, R. C. Field, F. Forti, K. R. Schubert, S. Passaggio, M. D. Sokoloff, P. R. Burchat, Yu. G. Kolomensky, G. Finocchiaro, J. P. Lees, Simon Akar, M. S. Alam, R. Prepost, J. M. Roney, C. Hast, S. Luitz, D. J. Lange, S. Martellotti, G. Piredda, W. Panduro Vazquez, D. E. Hutchcroft, Babar, J. Ocariz, I. M. Peruzzi, J. G. Smith, D. B. MacFarlane, H. A. Neal, G. Wormser, A. Calcaterra, C. Bünger, Maurizio Biasini, D. R. Muller, G. Casarosa, T. Leddig, Tamara Vazquez Schroeder, J. M. Izen, P. Ongmongkolkul, B. Bhuyan, B. Oberhof, V. E. Blinov, J. Cochran, E. A. Kravchenko, M. Piccolo, W. S. Lockman, B. G. Fulsom, T. J. Gershon, G. Vasseur, S. I. Serednyakov, F. Bianchi, I. M. Nugent, R. Cheaib, T. S. Mattison, C. Cartaro, Y. B. Li, Owen Rosser Long, D. W. G. S. Leith, G. Batignani, S. J. Sekula, M. R. Convery, A. Jawahery, V. Santoro, B. G. Pushpawela, W. Dunwoodie, Marco Bomben, S. Dittrich, D. S. Chao, R. Waldi, R. Gorodeisky, D. N. Brown, F. F. Wilson, Douglas Wright, D. A. Roberts, L. Zani, J. A. Ernst, L. Sun, T. E. Latham, M. Carpinelli, V. B. Golubev, C. P. Jessop, G. Calderini, Martino Margoni, M. Davier, J. M. LoSecco, M. K. Sullivan, S. Emery, E. Ben-Haim, E. A. Kozyrev, C. Touramanis, A. M. Lutz, E. Paoloni, B. Dey, M. T. Graham, A. Hafner, O. Grünberg, W. Gradl, D. X. Lin, M. Rama, J. Va’vra, Hamad Ahmed, R. Kowalewski, J. A. McKenna, A. P. Onuchin, E. M. T. Puccio, G. Cibinetto, A. V. Gritsan, Alessandro Pilloni, A. R. Buzykaev, D. R. Peimer, K. T. Flood, A. Beaulieu, M. Röhrken, A. Palano, R. Sacco, N. Guttman, G. Marchiori, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, F. De Mori, P. Patteri, L. Lanceri, A. Filippi, Denis Bernard, A. J. S. Smith, R. Cowan, B. Echenard, J. Chauveau, V. P. Druzhinin, C. Bozzi, G. Cowan, K. Honscheid, R. J. Barlow, M. Posocco, D. Gamba, M. Bellis, James R. Wilson, Brian Shuve, R. Calabrese, G. Eigen, K. Yu Todyshev, R. Stroili, F. Simonetto, J. J. Walsh, G. D. Lafferty, X. C. Lou, J. Oyang, R. Godang, Cheng Chen, H. M. Lacker, M. Heß, C. Hearty, D. J. Summers, S. Prell, I. Garzia, R. J. Sobie, V. Poireau, A. Soffer, L. Vitale, F. Martinez-Vidal, A. Lusiani, E. Luppi, P. Taras, E. P. Solodov, J. P. Coleman, A. G. Denig, C. L. Davis, R. F. Schwitters, A. M. Eisner, Peter S. Kim, M. V. Purohit, J. Albert, C. H. Cheng, R. de Sangro, S. L. Wu, E. Gabathuler, W. R. Innes, F. C. Porter, M. Chrzaszcz, C. Voß, Sw. Banerjee, G. Simi, D. Bettoni, Florian Urs Bernlochner, C. Patrignani, and V. Tisserand
Subjects: Physics, Meson, 010308 nuclear & particles physics, Branching fraction, Glueball, Electron–positron annihilation, Resonance, Dalitz plot, 01 natural sciences, Crystallography, 0103 physical sciences, 010306 general physics, Spectroscopy, Scalar meson
Abstract: We study the processes γ γ → η c → η ′ K + K - , η ′ π + π - , and η π + π - using a data sample of 519 fb - 1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e + e - collider at center-of-mass energies at and near the ϒ ( n S ) ( n = 2 , 3, 4) resonances. This is the first observation of the decay η c → η ′ K + K - and we measure the branching fraction Γ ( η c → η ′ K + K - ) / ( Γ ( η c → η ′ π + π - ) = 0.644 ± 0.03 9 stat ± 0.03 2 sys . Significant interference is observed between γ γ → η c → η π + π - and the nonresonant two-photon process γ γ → η π + π - . A Dalitz plot analysis is performed of η c decays to η ′ K + K - , η ′ π + π - , and η π + π - . Combined with our previous analysis of η c → K K ¯ π , we measure the K 0 * ( 1430 ) parameters and the ratio between its η ′ K and π K couplings. The decay η c → η ′ π + π - is dominated by the f 0 ( 2100 ) resonance, also observed in J / ψ radiative decays. A new a 0 ( 1700 ) → η π resonance is observed in the η c → η π + π - channel. We also compare η c decays to η and η ′ final states in association with scalar mesons as they relate to the identification of the scalar glueball.
Published: 2021

9. Charm at KEDR

Author: O.V. Anchugov, E.A. Bekhtenev, N. Yu. Muchnoi, N. A. Podgornov, P.V. Kasyanenko, A. R. Buzykaev, S. Eidelman, A. Bobrov, A.G. Tribendis, Vladimir Zhulanov, S.E. Baru, V. E. Blinov, V. V. Kaminskiy, B. Shwartz, D.N. Grigoriev, Valery I. Telnov, A.M. Sukharev, Sergey Karnaev, G.A. Savinov, G. V. Karpov, Yu. I. Maltseva, P.B. Cheblakov, S.B. Oreshkin, D.P. Kashtankin, M. Blinov, Yu. V. Usov, V. V. Petrov, A.N. Skrinsky, A. N. Zhuravlev, Sergey Sinyatkin, S.V. Karpov, K. Astrelina, V.L. Dorohov, A. A. Katcin, V. F. Kulikov, Pavel Piminov, V. V. Gambaryan, D.P. Sukhanov, V. M. Aulchenko, I.Yu. Basok, L. I. Shekhtman, V. S. Bobrovnikov, V. A. Tayursky, Evgeny Levichev, K.Yu. Kotov, Ivan Ovtin, I.N. Okunev, S.A. Kononov, A.A. Zhukov, G. Yu. Kurkin, O. Belikov, G.N. Baranov, E. A. Simonov, D.A. Shvedov, A.A. Ruban, Anton Bogomyagkov, M. Yu. Barnyakov, A. I. Vorobiov, S. A. Glukhov, A.A. Krasnov, V. Kudryavtsev, F. Emanov, I. B. Nikolaev, A. V. Osipov, S. E. Mishnev, I. A. Kuyanov, Alexey Talyshev, V. A. Kiselev, S.G. Pivovarov, A.K. Barladyan, Sergey Peleganchuk, V.V. Anashin, K. Yu. Todyshev, A.G. Shamov, K.Yu. Karukina, D. E. Berkaev, A. E. Blinov, A.E. Bondar, Evgenii Baldin, A. Andrianov, V. M. Malyshev, Andrey Sokolov, P. V. Logachev, E.V. Starostina, Tatyana Kharlamova, V.N. Zhilich, Oleg Meshkov, Alexey Maslennikov, E. A. Kravchenko, A. V. Pavlenko, D. A. Maksimov, D. Nikiforov, A. Yu. Barnyakov, A. P. Onuchin, S.A. Nikitin, D. Yu. Bolkhovityanov, V.G. Prisekin, V. V. Oreshonok, Olga Rezanova, G.M. Tumaikin, Yu. A. Tikhonov, and I. I. Morozov
Subjects: Physics, Particle physics, Meson, High Energy Physics::Lattice, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Charm (quantum number), Nuclear Experiment
Abstract: We review the recent results obtained by the KEDR experiment in the charmonium energy range. They include the measurements of $J/\psi$ meson total and partial widths and exclusive branching fractions, study of $D^+$ and $D^0$ meson masses and R between 1.8 and 7.0 GeV.
Published: 2021

10. Light meson spectroscopy from Dalitz plot analyses ηc decays to η0K + K − , η0π + π − , and ηπ + π − produced in two-photon interactions

Author: J. ???P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. ???N. Brown, Yu. ???G. Kolomensky, M. Fritsch, H. Koch, T. Schroeder, R. Cheaib, C. Hearty, T. ???S. Mattison, J. ???A. McKenna, R. ???Y. So, V. ???E. Blinov, A. ???R. Buzykaev, V. ???P. Druzhinin, V. ???B. Golubev, E. ???A. Kozyrev, E. ???A. Kravchenko, A. ???P. Onuchin, S. ???I. Serednyakov, Yu. ???I. Skovpen, E. ???P. Solodov, K. ???Yu. Todyshev, A. ???J. Lankford, B. Dey, J. ???W. Gary, O. Long, A. ???M. Eisner, W. ???S. Lockman, W. Panduro Vazquez, D. ???S. Chao, C. ???H. Cheng, B. Echenard, K. ???T. Flood, D. ???G. Hitlin, J. Kim, Y. Li, D. ???X. Lin, T. ???S. Miyashita, P. Ongmongkolkul, J. Oyang, F. ???C. Porter, M. R??hrken, Z. Huard, B. ???T. Meadows, B. ???G. Pushpawela, M. ???D. Sokoloff, L. Sun, J. ???G. Smith, S. ???R. Wagner, D. Bernard, M. Verderi, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Fioravanti, I. Garzia, E. Luppi, V. Santoro, A. Calcaterra, R. de Sangro, G. Finocchiaro, S. Martellotti, P. Patteri, I. ???M. Peruzzi, M. Piccolo, M. Rotondo, A. Zallo, S. Passaggio, C. Patrignani, B. ???J. Shuve, H. ???M. Lacker, B. Bhuyan, U. Mallik, C. Chen, J. Cochran, S. Prell, A. ???V. Gritsan, N. Arnaud, M. Davier, F. Le Diberder, A. ???M. Lutz, G. Wormser, D. ???J. Lange, D. ???M. Wright, J. ???P. Coleman, E. Gabathuler, D. ???E. Hutchcroft, D. ???J. Payne, C. Touramanis, A. ???J. Bevan, F. Di Lodovico, R. Sacco, G. Cowan, Sw. Banerjee, C. ???L. Davis, A. ???G. Denig, W. Gradl, K. Griessinger, A. Hafner, K. ???R. Schubert, R. ???J. Barlow, G. ???D. Lafferty, R. Cenci, A. Jawahery, D. ???A. Roberts, R. Cowan, S. ???H. Robertson, R. ???M. Seddon, N. Neri, F. Palombo, L. Cremaldi, R. Godang, D. ???J. Summers, P. Taras, G. De Nardo, C. Sciacca, G. Raven, C. ???P. Jessop, J. ???M. LoSecco, K. Honscheid, R. Kass, A. Gaz, M. Margoni, M. Posocco, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G. ???R. Bonneaud, G. Calderini, J. Chauveau, G. Marchiori, J. Ocariz, M. Biasini, E. Manoni, A. Rossi, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, M. Chrzaszcz, F. Forti, M. ???A. Giorgi, A. Lusiani, B. Oberhof, E. Paoloni, M. Rama, G. Rizzo, J. ???J. Walsh, L. Zani, A. ???J. ???S. Smith, F. Anulli, R. Faccini, F. Ferrarotto, F. Ferroni, A. Pilloni, G. Piredda, C. B??nger, S. Dittrich, O. Gr??nberg, M. He??, T. Leddig, C. Vo??, R. Waldi, T. Adye, F. ???F. Wilson, S. Emery, G. Vasseur, D. Aston, C. Cartaro, M. ???R. Convery, J. Dorfan, W. Dunwoodie, M. Ebert, R. ???C. Field, B. ???G. Fulsom, M. ???T. Graham, C. Hast, W. ???R. Innes, P. Kim, D. ???W. ???G. ???S. Leith, S. Luitz, D. ???B. MacFarlane, D. ???R. Muller, H. Neal, B. ???N. Ratcliff, A. Roodman, M. ???K. Sullivan, J. Va???vra, W. ???J. Wisniewski, M. ???V. Purohit, J. ???R. Wilson, A. Randle-Conde, S. ???J. Sekula, H. Ahmed, M. Bellis, P. ???R. Burchat, E. ???M. ???T. Puccio, M. ???S. Alam, J. ???A. Ernst, R. Gorodeisky, N. Guttman, D. ???R. Peimer, A. Soffer, S. ???M. Spanier, J. ???L. Ritchie, R. ???F. Schwitters, J. ???M. Izen, X. ???C. Lou, F. Bianchi, F. De Mori, A. Filippi, D. Gamba, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, J. Albert, A. Beaulieu, F. ???U. Bernlochner, G. ???J. King, R. Kowalewski, T. Lueck, I. ???M. Nugent, J. ???M. Roney, R. ???J. Sobie, N. Tasneem, T. ???J. Gershon, P. ???F. Harrison, T. ???E. Latham, R. Prepost, S. ???L. Wu, Lees, J. ???P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. ???N., Kolomensky, Yu. ???G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. ???S., Mckenna, J. ???A., So, R. ???Y., Blinov, V. ???E., Buzykaev, A. ???R., Druzhinin, V. ???P., Golubev, V. ???B., Kozyrev, E. ???A., Kravchenko, E. ???A., Onuchin, A. ???P., Serednyakov, S. ???I., Skovpen, Yu. ???I., Solodov, E. ???P., Todyshev, K. ???Yu., Lankford, A. ???J., Dey, B., Gary, J. ???W., Long, O., Eisner, A. ???M., Lockman, W. ???S., Panduro Vazquez, W., Chao, D. ???S., Cheng, C. ???H., Echenard, B., Flood, K. ???T., Hitlin, D. ???G., Kim, J., Li, Y., Lin, D. ???X., Miyashita, T. ???S., Ongmongkolkul, P., Oyang, J., Porter, F. ???C., R??hrken, M., Huard, Z., Meadows, B. ???T., Pushpawela, B. ???G., Sokoloff, M. ???D., Sun, L., Smith, J. ???G., Wagner, S. ???R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., de Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I. ???M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Shuve, B. ???J., Lacker, H. ???M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. ???V., Arnaud, N., Davier, M., Le Diberder, F., Lutz, A. ???M., Wormser, G., Lange, D. ???J., Wright, D. ???M., Coleman, J. ???P., Gabathuler, E., Hutchcroft, D. ???E., Payne, D. ???J., Touramanis, C., Bevan, A. ???J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, Sw., Davis, C. ???L., Denig, A. ???G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. ???R., Barlow, R. ???J., Lafferty, G. ???D., Cenci, R., Jawahery, A., Roberts, D. ???A., Cowan, R., Robertson, S. ???H., Seddon, R. ???M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. ???J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. ???P., Losecco, J. ???M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. ???R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., Forti, F., Giorgi, M. ???A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. ???J., Zani, L., Smith, A. ???J. ???S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., B??nger, C., Dittrich, S., Gr??nberg, O., He??, M., Leddig, T., Vo??, C., Waldi, R., Adye, T., Wilson, F. ???F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. ???R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. ???C., Fulsom, B. ???G., Graham, M. ???T., Hast, C., Innes, W. ???R., Kim, P., Leith, D. ???W. ???G. ???S., Luitz, S., Macfarlane, D. ???B., Muller, D. ???R., Neal, H., Ratcliff, B. ???N., Roodman, A., Sullivan, M. ???K., Va???vra, J., Wisniewski, W. ???J., Purohit, M. ???V., Wilson, J. ???R., Randle-Conde, A., Sekula, S. ???J., Ahmed, H., Bellis, M., Burchat, P. ???R., Puccio, E. ???M. ???T., Alam, M. ???S., Ernst, J. ???A., Gorodeisky, R., Guttman, N., Peimer, D. ???R., Soffer, A., Spanier, S. ???M., Ritchie, J. ???L., Schwitters, R. ???F., Izen, J. ???M., Lou, X. ???C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. ???U., King, G. ???J., Kowalewski, R., Lueck, T., Nugent, I. ???M., Roney, J. ???M., Sobie, R. ???J., Tasneem, N., Gershon, T. ???J., Harrison, P. ???F., Latham, T. ???E., Prepost, R., and Wu, S. ???L.
Subjects: Belle II, SuperKEKB, Dalitz, Dalitz plot analyses, light meson, Light meson spectroscopy, Dalitz plot analyse
Abstract: We study the processes γγ → ηc → η0KþK−, η0πþπ−, and ηπþπ− using a data sample of 519 fb−1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e− collider at center-of-mass energies at and near the Υ(nS) (n = 2, 3, 4) resonances. This is the first observation of the decay ηc → η0KþK− and we measure the branching fraction Γðηc → η0KþK−Þ=ðΓðηc → η0πþπ−Þ 1⁄4 0.644 0.039stat 0.032sys. Significant interference is observed between γγ → ηc → ηπþπ− and the nonresonant two-photon process γγ → ηπþπ−. A Dalitz plot analysis is performed of ηc decays to η0KþK−, η0πþπ−, and ηπþπ−. Combined with our previous analysis of ηc → KK ̄ π, we measure the K 0ð1430Þ parameters and the ratio between its η0K and πK couplings. The decay ηc → η0πþπ− is dominated by the f0ð2100Þ resonance, also observed in J=ψ radiative decays. A new a0(1700)→ ηπ resonance is observed in the ηc → ηπþπ− channel. We also compare ηc decays to η and η0 final states in association with scalar mesons as they relate to the identification of the scalar glueball.
Published: 2021

11. Search for Rare or Forbidden Decays of the D0 Meson

Author: T. E. Latham, M. Carpinelli, J. Ocariz, J. W. Gary, V. B. Golubev, Alessandro Pilloni, E. Grauges, Mario Giorgi, Elisa Manoni, N. Tasneem, Yu G. Kolomensky, D. Aston, James R. Wilson, Brian Shuve, R. Calabrese, D. R. Peimer, A. Calcaterra, J. M. Roney, C. Cartaro, Aidan Randle-Conde, J. G. Smith, S. Bettarini, J. L. Ritchie, J. M. LoSecco, Marco Bomben, C. H. Chen, S. M. Spanier, D. Bettoni, Colin Jessop, R. Prepost, D. B. MacFarlane, M. Rama, A. M. Rossi, Joseph Izen, Z. C. Huard, W. Panduro Vazquez, C. Voss, L. M. Cremaldi, J. A. McKenna, H. A. Neal, G. Casarosa, W. R. Innes, W. S. Lockman, A. G. Denig, A. Oyanguren, F. Di Lodovico, D. J. Payne, E. A. Kravchenko, M. Verderi, S. Martellotti, C. Hearty, F. Anulli, B. T. Meadows, G. Raven, V. Poireau, Alessandro Gaz, M. Piccolo, D. J. Summers, M. D. Sokoloff, P. R. Burchat, Abner Soffer, G. Eigen, M. Fritsch, P. C. Kim, Crisostomo Sciacca, G. Rizzo, J. J. Walsh, W. J. Wisniewski, G. Vasseur, K. T. Flood, R. Kowalewski, W. Dunwoodie, U. Mallik, S. H. Robertson, S. Emery, G. Batignani, G. J. King, A. R. Buzykaev, M. S. Alam, D. G. Hitlin, E. A. Kozyrev, R. Cenci, C. Touramanis, E. Fioravanti, A. Zallo, Florian Urs Bernlochner, F. Palombo, T. Lueck, I. M. Nugent, B. G. Pushpawela, N. Neri, R. J. Sobie, L. Vitale, R. Sacco, Herbert Koch, D. S. Chao, A. Beaulieu, D. N. Brown, Douglas Wright, L. Zani, F. Martinez-Vidal, Dominik Müller, M. T. Graham, O. Grünberg, K. Griessinger, M. V. Purohit, J. P. Lees, J. Albert, R. C. Field, M. Davier, A. Roodman, R. M. Seddon, E. Paoloni, T. S. Miyashita, G. D. Lafferty, C. Patrignani, A. J.S. Smith, M. Ebert, E. Luppi, D. E. Hutchcroft, Stephen Sekula, R. Gorodeisky, D. A. Roberts, Roland Waldi, F. Ferroni, T. S. Mattison, T. Leddig, So R. Y., F. De Mori, C. L. Davis, P. Ongmongkolkul, R. Godang, F. Forti, C. Hast, D. J. Lange, G. Piredda, Paul Fraser Harrison, J. Dorfan, Heiko Lacker, A. Hafner, E. M. T. Puccio, B. Bhuyan, Ju-Young Kim, Maurizio Biasini, V. Tisserand, G. R. Bonneaud, M. Rotondo, R. Cheaib, Stephen Robert Wagner, B. G. Fulsom, Tim Adye, T. J. Gershon, K. R. Schubert, V. P. Druzhinin, C. Bozzi, K. Honscheid, M. K. Sullivan, V. E. Blinov, G. De Nardo, V. Santoro, R. D. Kass, Owen Rosser Long, Yu I. Skovpen, F. Simonetto, J. A. Ernst, W. Gradl, L. Lanceri, R. J. Barlow, B. Echenard, M. Röhrken, C. H. Cheng, M. Posocco, R. Faccini, F. Ferrarotto, A. J. Lankford, E. Gabathuler, F. C. Porter, D. Bernard, G. Wormser, L. Sun, G. Finocchiaro, J. Chauveau, T. Schroeder, E. Ben-Haim, R. de Sangro, Adrian John Bevan, M. Hess, F. Le Diberder, D. W. G. S. Leith, X. C. Lou, G. A. Cowan, G. Calderini, D. Gamba, M. Bellis, F. F. Wilson, Martino Margoni, M. Chrzaszcz, A. Filippi, B. Oberhof, A. M. Eisner, Y. Li, R. Cowan, Sw. Banerjee, S. Akar, G. Simi, S. Prell, I. Garzia, N. Guttman, James H Cochran, G. Marchiori, K. Yu Todyshev, R. Stroili, A. Lusiani, P. Taras, E. P. Solodov, J. P. Coleman, R. F. Schwitters, Hamad Ahmed, Andrei Gritsan, A. M. Lutz, S. Passaggio, C. Bünger, A. Jawahery, A. P. Onuchin, G. Cibinetto, A. Palano, S. Luitz, P. Patteri, J. Va’vra, Wu S. L., M. R. Convery, B. N. Ratcliff, Biplab Dey, I. M. Peruzzi, S. I. Serednyakov, F. Bianchi, S. Dittrich, and N. Arnaud
Subjects: Physics, Particle physics, Muon, Annihilation, Meson, Electron–positron annihilation, 0103 physical sciences, General Physics and Astronomy, Electron, 010306 general physics, 01 natural sciences
Abstract: We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D^{0}→h^{'-}h^{-}l^{'+}l^{+} and D^{0}→h^{'-}h^{+}l^{'±}l^{∓}, where h and h^{'} represent a K or π meson and l and l^{'} an electron or muon. The analysis is based on 468 fb^{-1} of e^{+}e^{-} annihilation data collected at or close to the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signal is observed for any of the twelve modes, and we establish 90% confidence level upper limits on the branching fractions in the range (1.0-30.6)×10^{-7}. The limits are between 1 and 3 orders of magnitude more stringent than previous measurements.
Published: 2020

12. Measurement of Γee×Bμμ for ψ(2S) meson

Author: E.V. Starostina, G.V. Karpov, V.L. Dorohov, A.I. Vorobiov, Andrey Sokolov, G.N. Baranov, A.G. Tribendis, A. E. Blinov, A.A. Osipov, S.I. Eidelman, B.A. Shwartz, Tatyana Kharlamova, V.G. Prisekin, Vladimir Zhulanov, S.E. Baru, G.Ya. Kurkin, A.K. Barladyan, M.Yu. Barnyakov, A.M. Batrakov, A.N. Zhuravlev, I.V. Ovtin, K.Yu. Kotov, O.V. Anchugov, A. P. Onuchin, K. Yu. Todyshev, D.N. Grigoriev, I.I. Morozov, V.V. Anashin, V. M. Malyshev, D.A. Shvedov, I.N. Okunev, D.P. Kashtankin, I.A. Morozov, A.Yu. Barnyakov, E. A. Simonov, A.N. Skrinsky, N. Yu. Muchnoi, S.A. Nikitin, V. Kudryavtsev, Valery I. Telnov, A.E. Bondar, Evgenii Baldin, V.V. Kolmogorov, Alexey Buzykaev, Evgeny Levichev, Yu. A. Tikhonov, Dmitry Shatilov, Yu. V. Usov, Alexey Talyshev, S. A. Glukhov, A.A. Krasnov, A.M. Sukharev, I. B. Nikolaev, V.F. Kulikov, A.A. Zhukov, E.A. Kuper, Sergey Sinyatkin, Vladimir Blinov, Sergey Peleganchuk, Pavel Piminov, V.A. Tayursky, S. I. Mishnev, G.A. Savinov, S.G. Pivovarov, A.G. Shamov, S.B. Oreshkin, D.P. Sukhanov, I.Yu. Basok, A.V. Bogomyagkov, I. A. Kuyanov, V.M. Aulchenko, V. S. Bobrovnikov, K.Yu. Karukina, V.N. Zhilich, Oleg Meshkov, S.A. Kononov, G.M. Tumaikin, S.V. Karpov, V. A. Kiselev, E. A. Kravchenko, V. V. Petrov, E.A. Bekhtenev, Olga Rezanova, D.A. Maksimov, P.B. Cheblakov, A. Bobrov, A.A. Ruban, Sergey Karnaev, and Alexey Maslennikov
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, 01 natural sciences, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: The product of the electronic width of the ψ(2S) meson and the branching fraction of its decay to the muon pair was measured in the e + e − → ψ (2S) → μ + μ − process using nine data sets corresponding to an integrated luminosity of about 6.5 pb−1 collected with the KEDR detector at the VEPP-4M electron–positron collider: Γ e e × B μ μ = 19.3 ± 0.3 ± 0.5 eV . Adding the previous KEDR results on hadronic and leptonic channels, the values of the ψ(2S) electronic width were obtained under two assumptions: either with the assumption of lepton universality Γ e e = 2.279 ± 0.015 ± 0.042 keV or without it, summing up hadronic and three independent leptonic channels Γ e e = 2.282 ± 0.015 ± 0.042 keV .
Published: 2018

13. The drift chamber project for the Super Charm-Tau Factory detector

Author: V.G. Prisekin, T.V. Bedareva, D.A. Kyshtymov, G.A. Gusev, I.Yu. Basok, K. Yu. Todyshev, Vladimir Blinov, and M.D. Grigoriev
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, business.industry, Principal (computer security), Detector, Tracking system, 01 natural sciences, 030218 nuclear medicine & medical imaging, Gaseous detectors, 03 medical and health sciences, 0302 clinical medicine, 0103 physical sciences, Factory (object-oriented programming), High Energy Physics::Experiment, Charm (quantum number), Aerospace engineering, business, Instrumentation, Energy (signal processing)
Abstract: Since recently, the design of the detector for the Super Charm-Tau Factory has been actively developed at the Budker Institute. The principal tasks of the detector tracking system are to provide efficient reconstruction of charged-particle tracks, to determine their momenta and impact parameters with high precision and to identify particles using their energy losses. This article describes various issues related to the development of the drift chamber, the main part of the tracking system.
Published: 2021

14. Extraction of form Factors from a Four-Dimensional Angular Analysis of B¯→D*ℓ−ν¯ℓ

Author: V. B. Golubev, T. E. Latham, M. Carpinelli, D. B. MacFarlane, M. Rama, M. Rotondo, G. De Nardo, M. Röhrken, J. L. Ritchie, W. R. Innes, R. Y. So, A. Roodman, R. Sacco, Yu G. Kolomensky, J. P. Lees, R. M. Seddon, A. J.S. Smith, Roland Waldi, F. Ferroni, J. Dorfan, N. Tasneem, V. Santoro, Simon Akar, C. Bünger, J. J. Walsh, E. A. Kozyrev, B. T. Meadows, G. Raven, Paul Fraser Harrison, M. D. Sokoloff, P. R. Burchat, H. A. Neal, G. Casarosa, W. J. Wisniewski, D. N. Brown, Ju-Young Kim, Stephen Robert Wagner, Aidan Randle-Conde, G. R. Bonneaud, B. Bhuyan, A. Jawahery, R. Kowalewski, P. Ongmongkolkul, A. P. Onuchin, B. G. Fulsom, G. J. King, G. Cibinetto, M. K. Sullivan, S. Martellotti, C. H. Cheng, James R. Wilson, Andrei Gritsan, R. Gorodeisky, D. A. Roberts, V. Poireau, A. Hafner, E. M. T. Puccio, R. de Sangro, S. L. Wu, M. Piccolo, I. M. Nugent, R. Calabrese, G. Batignani, Crisostomo Sciacca, G. Rizzo, G. D. Lafferty, E. Ben-Haim, D. S. Chao, A. M. Lutz, A. R. Buzykaev, M. S. Alam, M. Davier, S. Passaggio, M. V. Purohit, S. H. Robertson, S. Emery, J. Albert, A. Beaulieu, J. Chauveau, F. De Mori, A. Palano, Herbert Koch, Heiko Lacker, J. M. Roney, S. Luitz, P. Patteri, J. Va’vra, A. M. Rossi, Joseph Izen, K. Griessinger, W. Dunwoodie, J. Ocariz, E. Fioravanti, J. G. Smith, G. Eigen, Florian Urs Bernlochner, F. Palombo, T. Lueck, M. Ebert, K. R. Schubert, Stephen Sekula, J. W. Gary, Abner Soffer, T. S. Miyashita, R. Cheaib, V. P. Druzhinin, C. Bozzi, K. Honscheid, V. E. Blinov, J. M. LoSecco, Z. C. Huard, W. Panduro Vazquez, F. Di Lodovico, D. J. Payne, R. J. Barlow, Tim Adye, B. G. Pushpawela, R. D. Kass, P. Taras, E. P. Solodov, M. Posocco, T. S. Mattison, Alessandro Pilloni, W. S. Lockman, D. R. Peimer, C. Hast, D. J. Lange, G. Piredda, F. Anulli, A. Filippi, J. A. McKenna, D. W. G. S. Leith, Alessandro Gaz, G. Calderini, E. Paoloni, R. Cowan, D. Gamba, J. P. Coleman, M. Bellis, Martino Margoni, T. J. Gershon, Maurizio Biasini, R. F. Schwitters, Owen Rosser Long, K. Yu Todyshev, R. Stroili, L. Sun, A. Oyanguren, span>B ar, Adrian John Bevan, F. Simonetto, S. Prell, I. Garzia, James H Cochran, A. Lusiani, C. Touramanis, C. L. Davis, X. C. Lou, R. Godang, P. C. Kim, O. Grünberg, M. Heß, M. Fritsch, R. Cenci, A. Zallo, Yu I. Skovpen, C. Hearty, Elisa Manoni, B. Echenard, D. J. Summers, D. Aston, D. Bernard, M. Bomben, R. J. Sobie, L. Vitale, F. Martinez-Vidal, Dominik Müller, span, N. Guttman, E. Luppi, M. T. Graham, Colin Jessop, R. Prepost, I. M. Peruzzi, G. Marchiori, E. A. Kravchenko, S. I. Serednyakov, G. Vasseur, K. T. Flood, F. Bianchi, J. A. Ernst, Douglas Wright, S. Dittrich, E. Gabathuler, F. C. Porter, E. Grauges, L. Zani, D. E. Hutchcroft, T. Leddig, W. Gradl, Mario Giorgi, R. Faccini, M. Chrzaszcz, M. R. Convery, C. Voß, F. Ferrarotto, A. J. Lankford, F. Le Diberder, A. M. Eisner, L. Lanceri, B. N. Ratcliff, Sw. Banerjee, Biplab Dey, G. Simi, Hamad Ahmed, D. Bettoni, N. Arnaud, A. Calcaterra, C. Cartaro, G. Finocchiaro, C. Patrignani, V. Tisserand, A. G. Denig, S. Bettarini, F. F. Wilson, B. Oberhof, G. A. Cowan, C. H. Chen, S. M. Spanier, G. Wormser, Y. Li, M. Verderi, T. Schroeder, U. Mallik, N. Neri, L. M. Cremaldi, D. G. Hitlin, R. C. Field, and F. Forti
Subjects: Physics, Quantum chromodynamics, Semileptonic decay, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Crossing, Form factor (quantum field theory), General Physics and Astronomy, 01 natural sciences, 0103 physical sciences, High Energy Physics::Experiment, B meson, 010306 general physics
Abstract: An angular analysis of the decay B[over ¯]→D^{*}l^{-}ν[over ¯]_{l}, l∈{e,μ}, is reported using the full e^{+}e^{-} collision data set collected by the BABAR experiment at the ϒ(4S) resonance. One B meson from the ϒ(4S)→BB[over ¯] decay is fully reconstructed in a hadronic decay mode, which constrains the kinematics and provides a determination of the neutrino momentum vector. The kinematics of the semileptonic decay is described by the dilepton mass squared, q^{2}, and three angles. The first unbinned fit to the full four-dimensional decay rate in the standard model is performed in the so-called Boyd-Grinstein-Lebed approach, which employs a generic q^{2} parametrization of the underlying form factors based on crossing symmetry, analyticity, and QCD dispersion relations for the amplitudes. A fit using the more model-dependent Caprini-Lellouch-Neubert (CLN) approach is performed as well. Our form factor shapes show deviations from previous fits based on the CLN parametrization. The latest form factors also provide an updated prediction for the branching fraction ratio R(D^{*})≡B(B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ})/B(B[over ¯]→D^{*}l^{-}ν[over ¯]_{l})=0.253±0.005. Finally, using the well-measured branching fraction for the B[over ¯]→D^{*}l^{-}ν[over ¯]_{l} decay, a value of |V_{cb}|=(38.36±0.90)×10^{-3} is obtained that is consistent with the current world average for exclusive B[over ¯]→D^{(*)}l^{-}ν[over ¯]_{l} decays and remains in tension with the determination from inclusive semileptonic B decays to final states with charm.
Published: 2019

15. Observation of the Decay D0→K−π+e+e−

Author: C. Bünger, Stephen Sekula, A. Oyanguren, A. Jawahery, C. Bozzi, J. Chauveau, F. De Mori, K. Honscheid, E. A. Kozyrev, N. Tasneem, Heiko Lacker, Aidan Randle-Conde, R. J. Barlow, G. R. Bonneaud, R. Cenci, C. Touramanis, A. Zallo, Florian Urs Bernlochner, G. Cibinetto, B. Bhuyan, F. Palombo, T. Lueck, B. G. Fulsom, E. P. Solodov, T. S. Miyashita, S. Bettarini, S. Prell, O. Grünberg, D. W. G. S. Leith, Maurizio Biasini, M. Posocco, G. Calderini, James H Cochran, J. L. Ritchie, I. M. Peruzzi, R. Gorodeisky, D. A. Roberts, S. I. Serednyakov, A. G. Denig, K. R. Schubert, Owen Rosser Long, H. A. Neal, G. Casarosa, A. M. Rossi, F. Bianchi, A. Lusiani, V. P. Druzhinin, V. Poireau, T. S. Mattison, V. B. Golubev, G. Wormser, J. A. Ernst, W. Gradl, A. Palano, T. Schroeder, A. Hafner, Joseph Izen, L. Lanceri, S. Emery, R. Y. So, M. Bellis, S. Dittrich, C. Hearty, P. Ongmongkolkul, C. Hast, D. J. Lange, G. Piredda, W. J. Wisniewski, E. M. T. Puccio, A. R. Buzykaev, M. S. Alam, M. T. Graham, Eleonora Luppi, M. Piccolo, A. P. Onuchin, A. Beaulieu, S. Martellotti, M. Carpinelli, L. M. Cremaldi, J. M. Roney, L. Sun, T. J. Gershon, B. Echenard, James R. Wilson, G. Batignani, Z. C. Huard, W. Panduro Vazquez, G. J. King, S. Luitz, D. Bernard, P. C. Kim, M. V. Purohit, D. J. Summers, P. Patteri, D. G. Hitlin, W. R. Innes, R. F. Schwitters, J. Va’vra, E. A. Kravchenko, J. Albert, A. Filippi, Elisa Manoni, Colin Jessop, R. Prepost, D. Aston, J. G. Smith, R. C. Field, E. Ben-Haim, Adrian John Bevan, F. Forti, W. S. Lockman, Crisostomo Sciacca, F. Anulli, W. Dunwoodie, R. Cowan, J. Dorfan, J. J. Walsh, Y. Li, A. M. Eisner, I. M. Nugent, Alessandro Gaz, A. Calcaterra, i> ar, B. G. Pushpawela, Tim Adye, R. Sacco, D. N. Brown, A. M. Lutz, R. D. Kass, M. Bomben, R. J. Sobie, G. Finocchiaro, Sw. Banerjee, C. H. Cheng, T. E. Latham, S. H. Robertson, L. Vitale, F. Di Lodovico, G. Eigen, R. de Sangro, S. Passaggio, S. L. Wu, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Martinez-Vidal, C. Cartaro, Dominik Müller, J. P. Lees, D. J. Payne, Herbert Koch, F. Le Diberder, G. D. Lafferty, N. Arnaud, R. Kowalewski, M. Rotondo, F. F. Wilson, M. R. Convery, A. J.S. Smith, Yu. I. Skovpen, G. De Nardo, Abner Soffer, D. S. Chao, B. Oberhof, M. Röhrken, Simon Akar, Yu G. Kolomensky, K. Griessinger, K. Yu. Todyshev, B. N. Ratcliff, M. Davier, V. Santoro, B. T. Meadows, G. Vasseur, A. Roodman, G. A. Cowan, Douglas Wright, K. T. Flood, G. Raven, R. Godang, R. M. Seddon, M. D. Sokoloff, E. Fioravanti, L. Zani, P. R. Burchat, E. Paoloni, R. Stroili, Roland Waldi, P. Taras, Alessandro Pilloni, F. Ferroni, D. R. Peimer, Roberto Calabrese, D. B. MacFarlane, D. Gamba, M. Rama, Paul Fraser Harrison, J. A. McKenna, Ju-Young Kim, Stephen Robert Wagner, Hamad Ahmed, J. Ocariz, M. K. Sullivan, N. Guttman, M. Heß, J. W. Gary, J. P. Coleman, E. Grauges, Mario Giorgi, R. Cheaib, G. Marchiori, E. Gabathuler, F. C. Porter, span> B, F. Simonetto, J. M. LoSecco, B. Dey, C. H. Chen, X. C. Lou, S. M. Spanier, Martino Margoni, M. Chrzaszcz, C. Voß, Vladimir Blinov, D. Bettoni, Andrei Gritsan, I. Garzia, D. E. Hutchcroft, C. Patrignani, G. Rizzo, V. Tisserand, T. Leddig, M. Verderi, U. Mallik, N. Neri, M. Fritsch, Gabriele Simi, C. L. Davis, and M. Ebert
Subjects: Physics, Particle physics, Annihilation, Branching fraction, 0103 physical sciences, General Physics and Astronomy, Resonance, Invariant mass, 010306 general physics, 01 natural sciences, Energy (signal processing), Standard Model
Abstract: We report the observation of the rare charm decay D^{0}→K^{-}π^{+}e^{+}e^{-}, based on 468 fb^{-1} of e^{+}e^{-} annihilation data collected at or close to the center-of-mass energy of the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. We find the branching fraction in the invariant mass range 0.675
Published: 2019

16. Search for a Stable Six-Quark State at BABAR

Author: J. Chauveau, F. De Mori, Heiko Lacker, J. L. Ritchie, Yu. I. Skovpen, S. I. Serednyakov, S. Bettarini, G. Finocchiaro, R. Y. So, K. R. Schubert, J. Dorfan, F. F. Wilson, R. Gorodeisky, D. A. Roberts, Roberto Calabrese, B. Oberhof, B. Bhuyan, K. Yu. Todyshev, P. Taras, A. Hafner, Giulia Casarosa, G. Wormser, V. B. Golubev, E. M. T. Puccio, J. Ocariz, J. W. Gary, D. B. MacFarlane, G. Rizzo, M. Rama, E. Grauges, Stefan Spanier, S. Prell, James H Cochran, N. Tasneem, Mario Giorgi, R. F. Schwitters, A. Lusiani, H. A. Neal, A. Calcaterra, R. Cheaib, W. R. Innes, A. Palano, V. P. Druzhinin, Randall Sobie, T. Schroeder, C. H. Cheng, Maurizio Biasini, D. Bettoni, C. Cartaro, Aidan Randle-Conde, Abner Soffer, R. Cenci, I. M. Peruzzi, B. Echenard, G. R. Bonneaud, Tim Adye, David Hutchcroft, J. M. LoSecco, D. Bernard, P. C. Kim, A. Zallo, R. de Sangro, B. Dey, R. D. Kass, Owen Rosser Long, S. L. Wu, S. Luitz, P. Patteri, J. J. Walsh, J. Va’vra, W. J. Wisniewski, R. Stroili, A. G. Denig, J. P. Lees, R. Godang, M. T. Graham, Eleonora Luppi, G. J. King, D. N. Brown, I. Garzia, A. R. Buzykaev, M. S. Alam, A. P. Onuchin, L. Sun, R. Sacco, David Lange, W. Dunwoodie, Y. Li, C. Patrignani, B. G. Fulsom, V. Tisserand, J. A. McKenna, Adrian John Bevan, A. Beaulieu, B. G. Pushpawela, Andrei Gritsan, A. M. Lutz, E. Paoloni, N. Arnaud, Colin Jessop, R. Prepost, G. D. Lafferty, Douglas Wright, V. Santoro, L. Zani, R. Kowalewski, L. M. Cremaldi, J. A. Ernst, W. Gradl, S. Passaggio, L. Lanceri, M. R. Convery, C. Bünger, Florian Urs Bernlochner, James R. Wilson, F. Palombo, T. Lueck, A. J.S. Smith, E. Gabathuler, A. Jawahery, F. C. Porter, M. Heß, Martino Margoni, Simon Akar, D. G. Hitlin, G. Cibinetto, G. Vasseur, K. T. Flood, E. A. Kozyrev, A. Filippi, Alessandro Pilloni, D. R. Peimer, B. N. Ratcliff, Hamad Ahmed, B. T. Meadows, G. Raven, M. V. Purohit, R. C. Field, F. Forti, M. Chrzaszcz, M. D. Sokoloff, Nicola Neri, P. R. Burchat, R. Cowan, C. Voß, J. Albert, G. Eigen, D. W. G. S. Leith, A. M. Eisner, M. Ebert, Stephen Sekula, F. Bianchi, D. Gamba, E. P. Solodov, T. S. Miyashita, S. Dittrich, G. Calderini, C. Bozzi, K. Honscheid, C. Hearty, R. J. Barlow, M. Posocco, Sw. Banerjee, S. Emery, N. Guttman, G. De Nardo, D. J. Summers, M. Bellis, G. Marchiori, M. Bomben, L. Vitale, F. Ferrarotto, A. J. Lankford, F. Le Diberder, F. Martinez-Vidal, Dominik Müller, M. Fritsch, span, G. A. Cowan, J. M. Roney, X. C. Lou, Gabriele Simi, J. G. Smith, C. L. Davis, F. Di Lodovico, D. J. Payne, Riccardo Faccini, A. Roodman, R. M. Seddon, E. Fioravanti, Roland Waldi, F. Ferroni, M. Rotondo, M. Röhrken, Paul Fraser Harrison, V. Poireau, Ju-Young Kim, M. Piccolo, G. Batignani, E. Ben-Haim, Stephen Robert Wagner, M. K. Sullivan, A. M. Rossi, Joseph Izen, S. Martellotti, M. Carpinelli, I. M. Nugent, D. S. Chao, M. Davier, Z. C. Huard, W. Panduro Vazquez, W. S. Lockman, J. P. Coleman, F. Anulli, Alessandro Gaz, S. H. Robertson, Herbert Koch, K. Griessinger, A. Oyanguren, span>B ar, C. Touramanis, T. Leddig, O. Grünberg, Elisa Manoni, D. Aston, M. Verderi, T. E. Latham, T. S. Mattison, C. Hast, G. Piredda, U. Mallik, T. J. Gershon, F. Simonetto, Yu G. Kolomensky, E. A. Kravchenko, C. H. Chen, Vladimir Blinov, Crisostomo Sciacca, P. Ongmongkolkul, Ministerio de Ciencia e Innovación (España), Lees, J, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, D, Kolomensky, Y, Fritsch, M, Koch, H, Schroeder, T, Hearty, C, Mattison, T, Mckenna, J, So, R, Blinov, V, Buzykaev, A, Druzhinin, V, Golubev, V, Kozyrev, E, Kravchenko, E, Onuchin, A, Serednyakov, S, Skovpen, Y, Solodov, E, Todyshev, K, Lankford, A, Gary, J, Long, O, Eisner, A, Lockman, W, Panduro Vazquez, W, Chao, D, Cheng, C, Echenard, B, Flood, K, Hitlin, D, Kim, J, Li, Y, Miyashita, T, Ongmongkolkul, P, Porter, F, Rohrken, M, Huard, Z, Meadows, B, Pushpawela, B, Sokoloff, M, Sun, L, Smith, J, Wagner, S, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, I, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Lacker, H, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, A, Arnaud, N, Davier, M, Le Diberder, F, Lutz, A, Wormser, G, Lange, D, Wright, D, Coleman, J, Gabathuler, E, Hutchcroft, D, Payne, D, Touramanis, C, Bevan, A, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Davis, C, Denig, A, Gradl, W, Griessinger, K, Hafner, A, Schubert, K, Barlow, R, Lafferty, G, Cenci, R, Jawahery, A, Roberts, D, Cowan, R, Robertson, S, Seddon, R, Dey, B, Neri, N, Palombo, F, Cheaib, R, Cremaldi, L, Godang, R, Summers, D, Taras, P, De Nardo, G, Sciacca, C, Raven, G, Jessop, C, Losecco, J, Honscheid, K, Kass, R, Gaz, A, Margoni, M, Posocco, M, Simi, G, Simonetto, F, Stroili, R, Akar, S, Ben-Haim, E, Bomben, M, Bonneaud, G, Calderini, G, Chauveau, J, Marchiori, G, Ocariz, J, Biasini, M, Manoni, E, Rossi, A, Batignani, G, Bettarini, S, Carpinelli, M, Casarosa, G, Chrzaszcz, M, Forti, F, Giorgi, M, Lusiani, A, Oberhof, B, Paoloni, E, Rama, M, Rizzo, G, Walsh, J, Zani, L, Smith, A, Anulli, F, Faccini, R, Ferrarotto, F, Ferroni, F, Pilloni, A, Piredda, G, Bunger, C, Dittrich, S, Grunberg, O, Hess, M, Leddig, T, Voss, C, Waldi, R, Adye, T, Wilson, F, Emery, S, Vasseur, G, Aston, D, Cartaro, C, Convery, M, Dorfan, J, Dunwoodie, W, Ebert, M, Field, R, Fulsom, B, Graham, M, Hast, C, Innes, W, Kim, P, Leith, D, Luitz, S, Macfarlane, D, Muller, D, Neal, H, Ratcliff, B, Roodman, A, Sullivan, M, Va'Vra, J, Wisniewski, W, Purohit, M, Wilson, J, Randle-Conde, A, Sekula, S, Ahmed, H, Bellis, M, Burchat, P, Puccio, E, Alam, M, Ernst, J, Gorodeisky, R, Guttman, N, Peimer, D, Soffer, A, Spanier, S, Ritchie, J, Schwitters, R, Izen, J, Lou, X, Bianchi, F, De Mori, F, Filippi, A, Gamba, D, Lanceri, L, Vitale, L, Martinez-Vidal, F, Oyanguren, A, Albert, J, Beaulieu, A, Bernlochner, F, King, G, Kowalewski, R, Lueck, T, Nugent, I, Roney, J, Sobie, R, Tasneem, N, Gershon, T, Harrison, P, Latham, T, Prepost, R, Wu, S, Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Schroeder, T., Hearty, C., Mattison, T. S., Mckenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Y. I., Solodov, E. P., Todyshev, K. Y., Lankford, A. J., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Panduro Vazquez, W., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Miyashita, T. S., Ongmongkolkul, P., Porter, F. C., Rohrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., Bernard, D., Verderi, M., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Fioravanti, E., Garzia, I., Luppi, E., Santoro, V., Calcaterra, A., De Sangro, R., Finocchiaro, G., Martellotti, S., Patteri, P., Peruzzi, I. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Le Diberder, F., Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, S., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Dey, B., Neri, N., Palombo, F., Cheaib, R., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., Losecco, J. M., Honscheid, K., Kass, R., Gaz, A., Margoni, M., Posocco, M., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bunger, C., Dittrich, S., Grunberg, O., Hess, M., Leddig, T., Voss, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., Macfarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'Vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Ahmed, H., Bellis, M., Burchat, P. R., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Spanier, S. M., Ritchie, J. L., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., Wu, S. L., Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, BaBar, Lees J.P., Poireau V., Tisserand V., Grauges E., Palano A., Eigen G., Brown D.N., Kolomensky Yu.G., Fritsch M., Koch H., Schroeder T., Hearty C., Mattison T.S., McKenna J.A., So R.Y., Blinov V.E., Buzykaev A.R., Druzhinin V.P., Golubev V.B., Kozyrev E.A., Kravchenko E.A., Onuchin A.P., Serednyakov S.I., Skovpen Y.I., Solodov E.P., Todyshev K.Y., Lankford A.J., Gary J.W., Long O., Eisner A.M., Lockman W.S., Panduro Vazquez W., Chao D.S., Cheng C.H., Echenard B., Flood K.T., Hitlin D.G., Kim J., Li Y., Miyashita T.S., Ongmongkolkul P., Porter F.C., Rohrken M., Huard Z., Meadows B.T., Pushpawela B.G., Sokoloff M.D., Sun L., Smith J.G., Wagner S.R., Bernard D., Verderi M., Bettoni D., Bozzi C., Calabrese R., Cibinetto G., Fioravanti E., Garzia I., Luppi E., Santoro V., Calcaterra A., De Sangro R., Finocchiaro G., Martellotti S., Patteri P., Peruzzi I.M., Piccolo M., Rotondo M., Zallo A., Passaggio S., Patrignani C., Lacker H.M., Bhuyan B., Mallik U., Chen C., Cochran J., Prell S., Gritsan A.V., Arnaud N., Davier M., Le Diberder F., Lutz A.M., Wormser G., Lange D.J., Wright D.M., Coleman J.P., Gabathuler E., Hutchcroft D.E., Payne D.J., Touramanis C., Bevan A.J., Di Lodovico F., Sacco R., Cowan G., Banerjee S., Davis C.L., Denig A.G., Gradl W., Griessinger K., Hafner A., Schubert K.R., Barlow R.J., Lafferty G.D., Cenci R., Jawahery A., Roberts D.A., Cowan R., Robertson S.H., Seddon R.M., Dey B., Neri N., Palombo F., Cheaib R., Cremaldi L., Godang R., Summers D.J., Taras P., De Nardo G., Sciacca C., Raven G., Jessop C.P., Losecco J.M., Honscheid K., Kass R., Gaz A., Margoni M., Posocco M., Simi G., Simonetto F., Stroili R., Akar S., Ben-Haim E., Bomben M., Bonneaud G.R., Calderini G., Chauveau J., Marchiori G., Ocariz J., Biasini M., Manoni E., Rossi A., Batignani G., Bettarini S., Carpinelli M., Casarosa G., Chrzaszcz M., Forti F., Giorgi M.A., Lusiani A., Oberhof B., Paoloni E., Rama M., Rizzo G., Walsh J.J., Zani L., Smith A.J.S., Anulli F., Faccini R., Ferrarotto F., Ferroni F., Pilloni A., Piredda G., Bunger C., Dittrich S., Grunberg O., Hess M., Leddig T., Voss C., Waldi R., Adye T., Wilson F.F., Emery S., Vasseur G., Aston D., Cartaro C., Convery M.R., Dorfan J., Dunwoodie W., Ebert M., Field R.C., Fulsom B.G., Graham M.T., Hast C., Innes W.R., Kim P., Leith D.W.G.S., Luitz S., Macfarlane D.B., Muller D.R., Neal H., Ratcliff B.N., Roodman A., Sullivan M.K., Va'Vra J., Wisniewski W.J., Purohit M.V., Wilson J.R., Randle-Conde A., Sekula S.J., Ahmed H., Bellis M., Burchat P.R., Puccio E.M.T., Alam M.S., Ernst J.A., Gorodeisky R., Guttman N., Peimer D.R., Soffer A., Spanier S.M., Ritchie J.L., Schwitters R.F., Izen J.M., Lou X.C., Bianchi F., De Mori F., Filippi A., Gamba D., Lanceri L., Vitale L., Martinez-Vidal F., Oyanguren A., Albert J., Beaulieu A., Bernlochner F.U., King G.J., Kowalewski R., Lueck T., Nugent I.M., Roney J.M., Sobie R.J., Tasneem N., Gershon T.J., Harrison P.F., Latham T.E., Prepost R., Wu S.L., Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Skovpen, Yu. I., Todyshev, K. Yu., Röhrken, M., de Sangro, R., Banerjee, Sw., Bünger, C., Grünberg, O., Heß, M., Voß, C., Va’Vra, J., Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Massachusetts Institute of Technology. Laboratory for Nuclear Science, and Cowan, Ray F
Subjects: Kjerne- og elementærpartikkelfysikk: 431 [VDP], branching ratio: upper limit, Electron–positron annihilation, Bound state, General Physics and Astronomy, BaBar experiment, Quarks, Upsilon(10355): rare decay, Upsilon(10355): electroproduction, Upsilon(10020): branching ratio, particle: exotic, upsilon mesons: hadronic decay, 01 natural sciences, decay, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Upsilon(10020): electroproduction, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physic, QC, QB, Exotic particles, Physics, new physics: search for, Settore FIS/01 - Fisica Sperimentale, electron positron: colliding beams, detector, limits, decay, Nuclear and elementary particle physics: 431 [VDP], Particles, Dark matter (Astronomy), Confidence level, baryon: dark matter, Upsilon(10020): rare decay, Branching fraction, Matèria fosca (Astronomia), Quark, Particle physics, Dark matter, FOS: Physical sciences, Lambda: pair production, electron positron: annihilation, Partícules (Matèria), NO, Physics and Astronomy (all), BABAR experiment, 0103 physical sciences, Atomic physic, Upsilon(10355): branching ratio, 010306 general physics, detector, dark matter: mass, State (functional analysis), stability, SLAC PEP Stor, HEP, A-stable, BaBar, Elementary Particles and Fields, High Energy Physics::Experiment, limits, experimental results
Abstract: Recent investigations have suggested that the six-quark combination uuddss could be a deeply bound state (S) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, doubly strange six-quark state in Upsilon -> S anti-Lambda anti-Lambda decays based on a sample of 90 million Upsilon(2S) and 110 million Upsilon(3S) decays collected by the BABAR experiment. No signal is observed, and 90% confidence level limits on the combined Upsilon(2S,3S) -> S anti-Lambda anti-Lambda branching fraction in the range (1.2-1.4)x10^-7 are derived for m_S < 2.05 GeV. These bounds set stringent limits on the existence of such exotic particles., 7 pages, 4 figures, published version
Published: 2019

17. Study of the reactions e+e−→π+π−π0π0π0 and π+π−π0π0η at center-of-mass energies from threshold to 4.35 GeV using initial-state radiation

Author: J. P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu. G. Kolomensky, M. Fritsch, H. Koch, T. Schroeder, R. Cheaib, C. Hearty, T. S. Mattison, J. A. McKenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, V. B. Golubev, E. A. Kozyrev, E. A. Kravchenko, A. P. Onuchin, S. I. Serednyakov, Yu. I. Skovpen, E. P. Solodov, K. Yu. Todyshev, A. J. Lankford, B. Dey, J. W. Gary, O. Long, A. M. Eisner, W. S. Lockman, W. Panduro Vazquez, D. S. Chao, C. H. Cheng, B. Echenard, K. T. Flood, D. G. Hitlin, J. Kim, Y. Li, D. X. Lin, S. Middleton, T. S. Miyashita, P. Ongmongkolkul, J. Oyang, F. C. Porter, M. Röhrken, Z. Huard, B. T. Meadows, B. G. Pushpawela, M. D. Sokoloff, L. Sun, J. G. Smith, S. R. Wagner, D. Bernard, M. Verderi, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Fioravanti, I. Garzia, E. Luppi, V. Santoro, A. Calcaterra, R. de Sangro, G. Finocchiaro, S. Martellotti, P. Patteri, I. M. Peruzzi, M. Piccolo, M. Rotondo, A. Zallo, S. Passaggio, C. Patrignani, B. J. Shuve, H. M. Lacker, B. Bhuyan, U. Mallik, C. Chen, J. Cochran, S. Prell, A. V. Gritsan, N. Arnaud, M. Davier, F. Le Diberder, A. M. Lutz, G. Wormser, D. J. Lange, D. M. Wright, J. P. Coleman, E. Gabathuler, D. E. Hutchcroft, D. J. Payne, C. Touramanis, A. J. Bevan, F. Di Lodovico, R. Sacco, G. Cowan, Sw. Banerjee, C. L. Davis, A. G. Denig, W. Gradl, K. Griessinger, A. Hafner, K. R. Schubert, R. J. Barlow, G. D. Lafferty, R. Cenci, A. Jawahery, D. A. Roberts, R. Cowan, S. H. Robertson, R. M. Seddon, N. Neri, F. Palombo, L. Cremaldi, R. Godang, D. J. Summers, P. Taras, G. De Nardo, C. Sciacca, G. Raven, C. P. Jessop, J. M. LoSecco, K. Honscheid, R. Kass, A. Gaz, M. Margoni, M. Posocco, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G. R. Bonneaud, G. Calderini, J. Chauveau, G. Marchiori, J. Ocariz, M. Biasini, E. Manoni, A. Rossi, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, M. Chrzaszcz, F. Forti, M. A. Giorgi, A. Lusiani, B. Oberhof, E. Paoloni, M. Rama, G. Rizzo, J. J. Walsh, L. Zani, A. J. S. Smith, F. Anulli, R. Faccini, F. Ferrarotto, F. Ferroni, A. Pilloni, G. Piredda, C. Bünger, S. Dittrich, O. Grünberg, M. Heß, T. Leddig, C. Voß, R. Waldi, T. Adye, F. F. Wilson, S. Emery, G. Vasseur, D. Aston, C. Cartaro, M. R. Convery, J. Dorfan, W. Dunwoodie, M. Ebert, R. C. Field, B. G. Fulsom, M. T. Graham, C. Hast, W. R. Innes, P. Kim, D. W. G. S. Leith, S. Luitz, D. B. MacFarlane, D. R. Muller, H. Neal, B. N. Ratcliff, A. Roodman, M. K. Sullivan, J. Va’vra, W. J. Wisniewski, M. V. Purohit, J. R. Wilson, A. Randle-Conde, S. J. Sekula, H. Ahmed, N. Tasneem, M. Bellis, P. R. Burchat, E. M. T. Puccio, M. S. Alam, J. A. Ernst, R. Gorodeisky, N. Guttman, D. R. Peimer, A. Soffer, S. M. Spanier, J. L. Ritchie, R. F. Schwitters, J. M. Izen, X. C. Lou, F. Bianchi, F. De Mori, A. Filippi, D. Gamba, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, J. Albert, A. Beaulieu, F. U. Bernlochner, G. J. King, R. Kowalewski, T. Lueck, C. Miller, I. M. Nugent, J. M. Roney, R. J. Sobie, T. J. Gershon, P. F. Harrison, T. E. Latham, R. Prepost, and S. L. Wu
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, 7. Clean energy, 01 natural sciences, Omega, 0103 physical sciences, Mass spectrum, Pi, Intermediate state, Invariant mass, 010306 general physics
Abstract: We study the processes $e^+e^-\to 2(\pi^+\pi^-)\pi^0\pi^0\pi^0\gamma$ and $2(\pi^+\pi^-)\pi^0\pi^0\eta\gamma$ in which an energetic photon is radiated from the initial state. The data were collected with the \babar~ detector at SLAC. About 14\,000 and 4700 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb^{-1}. The invariant mass of the hadronic final state defines the effective \epem center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the $e^+e^-\to 2(\pi^+\pi^-)\pi^0\pi^0\pi^0$ and the $e^+e^-\to2(\pi^+\pi^-)\pi^0\pi^0\eta$ cross sections are performed. The contributions from $\omega\pi^+\pi^-\pi^0\pi^0$, $\eta2(\pi^+\pi^-)$, and other intermediate states are presented. We observe the $J/\psi$ and $\psi(2S)$ in most of these final states and measure the corresponding branching fractions, many of them for the first time.
Published: 2018

18. Measurement of the γγ→η′ transition form factor

Author: A. J S Smith, A. Randle-Conde, R. F. Schwitters, R. Cenci, R. de Sangro, M. K. Sullivan, Z. C. Huard, Gabriele Simi, J. R. Wilson, T. S. Miyashita, F. Le Diberder, C. H. Cheng, K. Yu Todyshev, V. E. Blinov, Marcin Chrzaszcz, M. Verderi, Eleonora Luppi, Yu. I. Skovpen, G. J. King, M. A. Giorgi, S. Passaggio, R. Faccini, J. M. Izen, Simon Akar, M. Bellis, T. Leddig, K. Honscheid, F. Forti, A. R. Buzykaev, C. Cartaro, D. J. Summers, A. M. Lutz, M. V. Purohit, F. Bianchi, J. W. Gary, P. Taras, A. Calcaterra, I. M. Nugent, R. Kowalewski, J. Dorfan, D. Gamba, D. J. Payne, X. C. Lou, N. Arnaud, J. P. Coleman, G. Eigen, M. Margoni, A. Soffer, R. Godang, E. Paoloni, M. Heß, D. S. Chao, G. Wormser, G. Batignani, M. R. Convery, D. B. Macfarlane, L. Lanceri, R. J. Sobie, A. Roodman, D. J. Lange, Alessandro Pilloni, D. R. Peimer, T. Schroeder, A. J. Lankford, D. Aston, W. Panduro Vazquez, Wu S. L., R. M. Seddon, E. P. Solodov, J. Chauveau, M. Posocco, S. Bettarini, R. Prepost, Y. B. Li, G. Piredda, F. Anulli, U. Mallik, M. Carpinelli, J. Va'Vra, E. Fioravanti, W. S. Lockman, Roland Waldi, So R. Y., L. Vitale, K. T. Flood, Ray Franklin Cowan, C. Chen, G. Raven, L. Zani, G. Vasseur, M. Piccolo, P. C. Kim, F. U. Bernlochner, T. Adye, J. M. Roney, S. M. Spanier, C. L. Davis, B. Echenard, M. Fritsch, K. Griessinger, G. Calderini, Alberto Lusiani, J. Ocariz, G. Casarosa, C. Hearty, Marcello Rotondo, S. Emery, M. T. Graham, B. Bhuyan, F. Simonetto, Timothy Gershon, R. Cheaib, Ju-Young Kim, M. Davier, A. Oyanguren, M. Bomben, Dominik Müller, F. Ferroni, Biplab Dey, W. J. Wisniewski, D. A. Roberts, F. Di Lodovico, Brian Meadows, E. Grauges, F. Martinez-Vidal, J. J. Walsh, Matteo Rama, A. V. Gritsan, D. Bernard, Fergus Wilson, A. G. Denig, B. N. Ratcliff, I. Garzia, James G. Smith, C. Sciacca, R. C. Field, H. Ahmed, C. Touramanis, D. N. Brown, S. Luitz, K. R. Schubert, S. I. Serednyakov, F. Palombo, V. Poireau, Thomas Latham, C. Patrignani, V. Tisserand, J. L. Ritchie, R. Calabrese, Nicola Neri, M. Biasini, T. Lueck, F. De Mori, J. M. Losecco, G. Marchiori, D. G. Hitlin, Elisa Manoni, F. C. Porter, Michael Sokoloff, J. Cochran, C. Bozzi, R. Gorodeisky, C. Hast, P. R. Burchat, G. A. Cowan, A. P. Onuchin, L. Sun, Sw. Banerjee, Yu. G. Kolomensky, P. Ongmongkolkul, E. Ben-Haim, J. A. Ernst, N. Tasneem, J. Albert, T. S. Mattison, N. Guttman, B. G. Fulsom, W. Gradl, Adrian John Bevan, F. Ferrarotto, E. M. T. Puccio, S. Dittrich, I. M. Peruzzi, M. Ebert, R. Stroili, A. Rossi, O. Long, C. Bünger, S. Martellotti, V. P. Druzhinin, D. M. Wright, G. De Nardo, H. M. Lacker, A. Jawahery, S. J. Sekula, G. Cibinetto, P. Patteri, W. Dunwoodie, M. S. Alam, H. Koch, E. A. Kozyrev, G. Finocchiaro, H. Neal, R. Kass, D. W G S Leith, A. Beaulieu, D. Bettoni, S. Prell, V. B. Golubev, B. G. Pushpawela, M. Röhrken, A. Gaz, R. Sacco, B. Oberhof, S. H. Robertson, A. Palano, E. A. Kravchenko, George Lafferty, C. P. Jessop, A. Filippi, G. Rizzo, A. Hafner, W. R. Innes, David Hutchcroft, Oliver Grünberg, G. R. Bonneaud, A. Zallo, C. Voß, J. A. McKenna, S. R. Wagner, E. Gabathuler, P. F. Harrison, A. M. Eisner, Roger Barlow, J. P. Lees, V. Santoro, and L. Cremaldi
Subjects: Physics, Range (particle radiation), 010308 nuclear & particles physics, Electron–positron annihilation, Form factor (quantum field theory), 01 natural sciences, 7. Clean energy, Measure (mathematics), law.invention, Luminosity, Nuclear physics, law, 0103 physical sciences, 010306 general physics, Collider
Abstract: We study the process e^+e^− → e^+e^−η′ in the double-tag mode and measure for the first time the γ⋆γ⋆ → η′ transition form factor F_η′(Q^2_1,Q^2_2) in the momentum-transfer range 2 < Q^2_1, Q^2_2 < 60 GeV^2. The analysis is based on a data sample corresponding to an integrated luminosity of around 469 fb^(-1) collected at the PEP-II e^+e^− collider with the BABAR detector at center-of-mass energies near 10.6 GeV.
Published: 2018

19. High precision energy calibration with resonant depolarization at the VEPP-4M collider

Author: S. I. Mishnev, N. Yu. Muchnoi, I.B. Nikolaev, G.M. Tumaikin, Evgeny Levichev, A.I. Mikaiylov, A.G. Shamov, Anton Bogomyagkov, Vladimir Blinov, D. K. Toporkov, D. M. Nikolenko, K. Yu. Todyshev, E.I. Shubin, S.A. Nikitin, V.P. Cherepanov, V. A. Kiselev, and V.N. Zhilich
Subjects: Nuclear and High Energy Physics, Particle physics, Backscatter, KEDR, Electron–positron annihilation, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, Calibration, 010306 general physics, Collider, Physics, beam energy measurement, Range (particle radiation), 010308 nuclear & particles physics, Depolarization, Compton backscattering, resonance depolarization, Physics::Accelerator Physics, High Energy Physics::Experiment, VEPP-4M, Touschek polarimeter, Energy (signal processing), Lepton
Abstract: At the VEPP-4M collider the record accuracy of 10−6 of an absolute beam energy calibration was achieved with the resonant depolarization technique in the energy range including the J/ψ, ψ(2S), ψ(3770) resonances as well as the τ - lepton production threshold. This report discusses the methods, equipment and the results.
Published: 2016

20. Measurement of Ruds and R between 3.12 and 3.72 GeV at the KEDR detector

Author: V.A. Tayursky, G.A. Savinov, G.V. Karpov, V.F. Kulikov, A. E. Blinov, A.I. Vorobiov, Tatyana Kharlamova, D.A. Maksimov, N. Yu. Muchnoi, I.B. Nikolaev, A.A. Osipov, E.A. Kuper, V.G. Prisekin, I. A. Kuyanov, V.M. Aulchenko, E. A. Simonov, V. S. Bobrovnikov, M.Yu. Barnyakov, S.A. Nikitin, V. A. Kiselev, V.V. Kolmogorov, Alexey Talyshev, A.M. Sukharev, A.N. Skrinsky, S.E. Baru, V. Kudryavtsev, A.K. Barladyan, S.B. Oreshkin, S.I. Eidelman, S.A. Kononov, Sergey Karnaev, A. P. Onuchin, Yu. A. Tikhonov, Yu.M. Glukhovchenko, Sergey Peleganchuk, Yu. V. Usov, V.V. Anashin, A.A. Borodenko, K.Yu. Kotov, I.N. Okunev, D.N. Grigoriev, I.Yu. Basok, I.V. Ovtin, A.A. Ruban, Evgeny Levichev, A.N. Zhuravlev, A.Yu. Barnyakov, I.I. Morozov, V.K. Sandyrev, G.Ya. Kurkin, A.E. Bondar, S.V. Karpov, Dmitry Shatilov, Evgenii Baldin, Alexey Buzykaev, Valery I. Telnov, B.A. Shwartz, Vladimir Blinov, A.V. Bogomyagkov, P.V. Kasyanenko, S.G. Pivovarov, A.G. Shamov, K. Yu. Todyshev, Vladimir Zhulanov, Sergey Sinyatkin, Pavel Piminov, S. I. Mishnev, A.M. Batrakov, G.M. Tumaikin, V.N. Zhilich, Oleg Meshkov, Andrey Sokolov, E.V. Starostina, V.V. Neufeld, V. M. Malyshev, A. Bobrov, V. V. Petrov, Olga Rezanova, E. A. Kravchenko, and Alexey Maslennikov
Subjects: Physics, Systematic error, Particle physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Electron–positron annihilation, Detector, FOS: Physical sciences, 01 natural sciences, lcsh:QC1-999, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, 010306 general physics, Collider, lcsh:Physics
Abstract: Using the KEDR detector at the VEPP-4M e + e − e + e − collider, we have measured the values of R uds R uds and R at seven points of the center-of-mass energy between 3.12 and 3.72 GeV. The total achieved accuracy is about or better than 3.3% 3.3 % at most of energy points with a systematic uncertainty of about 2.1% 2.1 % . At the moment it is the most accurate measurement of R(s) R ( s ) in this energy range.
Published: 2016

21. Overview of PID options for experiments at the Super Charm-Tau Factory

Author: I. A. Kuyanov, S.A. Kononov, I.M. Plekhov, V.S. Boborovnikov, M.Yu. Barnyakov, N.A. Podgornov, A.F. Danilyuk, Ivan Ovtin, G.P. Razuvaev, K. Yu Todyshev, A.A. Katcin, A. R. Buzykaev, A. Yu. Barnyakov, V.S. Vorobyev, A. P. Onuchin, E. A. Kravchenko, and M.S. Belozyorova
Subjects: Physics, Particle physics, Luminosity (scattering theory), Physics::Instrumentation and Detectors, Detector, Particle identification, Charm quark, law.invention, law, High Energy Physics::Experiment, Charm (quantum number), Collider, Instrumentation, Mathematical Physics, Cherenkov radiation, Lepton
Abstract: The Super Charm-Tau Factory is an electron-positron collider project in Novosibirsk with a peak luminosity of 1035 cm−1s−1 operating in the center of mass energy range between 2 and 6 GeV. The physics program of the experiment in general is devoted to the study of charm quark and tau lepton. Conceptual designs of the collider and a universal detector are presented. The dedicated particle identification (PID) system is required to provide the state-of-the-art level of μ/π separation for the particle momenta up to 1.2 GeV/c. The following options for the PID system are considered in this paper: Focusing Aerogel RICH (FARICH) detector composed of 4-layer aerogel tiles, threshold Cherenkov counters based on aerogel and shifter (ASHIPH), Focusing DIRC (FDIRC) counter and time-of-flight (ToF) detector combined with the time-of-propagation (ToP) approach providing a time resolution better than 30 ps. Also the capabilities of particles separation in tracking system are discussed. Comparison of PID approaches with help of parametric simulation is performed.
Published: 2020

22. Particle identification system for the Super Charm–Tau Factory at Novosibirsk

Author: Alexey Buzykaev, E. A. Kravchenko, A. P. Onuchin, A.A. Katcin, A.Yu. Barnyakov, M.Yu. Barnyakov, D.V. Korda, N.A. Podgornov, A.F. Danilyuk, K. Yu. Todyshev, V.S. Vorobyev, V.S. Boborovnikov, G.P. Razuvaev, A.V. Bykov, V.A. Rodiakin, I.A. Kuyanov, V.V. Porosev, I.V. Ovtin, and S.A. Kononov
Subjects: Physics, Nuclear and High Energy Physics, Photomultiplier, Luminosity (scattering theory), Physics::Instrumentation and Detectors, Detector, Charged particle, Particle identification, Particle detector, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Collider, Instrumentation, Cherenkov radiation
Abstract: The Super Charm–Tau (SCT) Factory is a proposed electron–positron collider in Novosibirsk with a peak luminosity of 1 0 35 cm − 1 s − 1 operating in the energy range between 2and 6 GeV. The interaction region should be equipped by an excellent universal particle detector meeting the requirements of broad physics program of the experiment. Research and development for all detector subsystems is currently underway. Particle identification (PID) system of the detector is required to provide the state-of-the-art level of μ / π separation for the particle momenta up to 1 . 2 GeV∕c . The following options for the PID system are considered in this paper: focusing aerogel ring imaging Cherenkov (FARICH) detector composed of 4-layer aerogel tiles, threshold Cherenkov counters based on aerogel shifter photomultiplier (ASHIPH), and time-of-flight (ToF) detector combined with the time-of-propagation (ToP) approach providing a time resolution better than 30 ps . Assessment of the charged particle separation performance for these options based on simulation and prototype tests results is presented.
Published: 2020

23. Precise measurement of And between 1.84 and 3.72 GeV at the KEDR detector

Author: D.P. Kashtankin, S.I. Eidelman, A.K. Barladyan, I.Yu. Basok, V.V. Anashin, Evgeny Levichev, V.M. Aulchenko, Tatyana Kharlamova, K.Yu. Kotov, A.M. Batrakov, V.A. Tayursky, D.N. Grigoriev, A.E. Bondar, Evgenii Baldin, Alexey Buzykaev, K. Yu. Todyshev, G.A. Savinov, A.N. Skrinsky, V. Kudryavtsev, E. A. Kravchenko, P.V. Kasyanenko, E. A. Simonov, D.A. Shvedov, V.L. Dorohov, S.A. Nikitin, I. A. Kuyanov, V. A. Kiselev, Yu. A. Tikhonov, Sergey Peleganchuk, V.F. Kulikov, M.Yu. Barnyakov, Alexey Maslennikov, Sergey Sinyatkin, V.G. Prisekin, O.V. Anchugov, V. V. Kaminskiy, A.N. Zhuravlev, V. S. Bobrovnikov, Pavel Piminov, A.G. Tribendis, S.E. Baru, A.A. Zhukov, E.A. Bekhtenev, Olga Rezanova, Vladimir Blinov, B.A. Shwartz, I.A. Morozov, S.A. Kononov, A. P. Onuchin, S.B. Oreshkin, G.N. Baranov, E.V. Starostina, Yu. V. Usov, A.Yu. Barnyakov, V.V. Kolmogorov, A.A. Krasnov, I.N. Okunev, Vladimir Zhulanov, G.Ya. Kurkin, V. V. Petrov, S.G. Pivovarov, Alexey Talyshev, A.G. Shamov, A.M. Sukharev, I. B. Nikolaev, G.V. Karpov, A.V. Bogomyagkov, A.I. Vorobiov, A. Bobrov, I.I. Morozov, K.Yu. Karukina, Dmitry Shatilov, Andrey Sokolov, Valery I. Telnov, S.V. Karpov, D.A. Maksimov, Sergey Karnaev, S.A. Glukhov, V. M. Malyshev, P.B. Cheblakov, A.A. Ruban, D.P. Sukhanov, S. I. Mishnev, G.M. Tumaikin, A. E. Blinov, A.A. Osipov, V.N. Zhilich, Oleg Meshkov, and I.V. Ovtin
Subjects: Systematic error, Physics, Nuclear and High Energy Physics, Range (particle radiation), 010308 nuclear & particles physics, Detector, Monte Carlo method, FOS: Physical sciences, 01 natural sciences, R-value (insulation), lcsh:QC1-999, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, 010306 general physics, Collider, lcsh:Physics
Abstract: The present work continues a series of the KEDR measurements of the $R$ value that started in 2010 at the VEPP-4M $e^+e^-$ collider. By combining new data with our previous results in this energy range we measured the values of $R_{\text{uds}}$ and $R$ at nine center-of-mass energies between 3.08 and 3.72 GeV. The total accuracy is about or better than $2.6\%$ at most of energy points with a systematic uncertainty of about $1.9\%$. Together with the previous precise $R$ measurement at KEDR in the energy range 1.84-3.05 GeV, it constitutes the most detailed high-precision $R$ measurement near the charmonium production threshold., arXiv admin note: text overlap with arXiv:1610.02827 and substantial text overlap with arXiv:1510.02667
Published: 2018

24. Measurement of the spectral function for the τ−→K−KSντ decay

Author: G. J. King, D. B. Macfarlane, B. Bhuyan, J. Dorfan, Z. C. Huard, J. M. Izen, E. Grauges, M. Bellis, F. Martinez-Vidal, J. J. Walsh, V. B. Golubev, M. Röhrken, George Lafferty, C. P. Jessop, V. E. Blinov, Matteo Rama, A. V. Gritsan, A. Palano, James G. Smith, H. Neal, R. Kass, P. Ongmongkolkul, A. Hafner, W. R. Innes, David Hutchcroft, D. W G S Leith, D. Gamba, A. Beaulieu, J. Va'Vra, Oliver Grünberg, G. R. Bonneaud, W. S. Lockman, L. Lanceri, J. A. McKenna, S. R. Wagner, A. Calcaterra, B. Echenard, C. H. Cheng, R. M. Seddon, E. Fioravanti, A. G. Denig, B. N. Ratcliff, C. Bünger, M. Davier, V. P. Druzhinin, Ray Franklin Cowan, S. M. Spanier, A. Oyanguren, K. Griessinger, C. L. Davis, R. F. Schwitters, A. J S Smith, P. C. Kim, M. Posocco, K. T. Flood, R. Cheaib, A. Jawahery, N. Guttman, R. Stroili, M. Fritsch, F. U. Bernlochner, G. Cibinetto, J. Ocariz, M. T. Graham, D. M. Wright, M. S. Alam, Brian Meadows, Roland Waldi, So R. Y., F. De Mori, J. P. Lees, E. A. Kozyrev, W. J. Wisniewski, F. Ferroni, R. Gorodeisky, G. Vasseur, G. Wormser, F. Le Diberder, K. Yu Todyshev, B. G. Fulsom, C. Bozzi, Gabriele Simi, J. P. Coleman, R. Cenci, Ju-Young Kim, M. Bomben, F. Forti, R. Sacco, M. Margoni, C. Voß, Marcin Chrzaszcz, B. Oberhof, J. Cochran, A. M. Lutz, A. Zallo, Dominik Müller, T. Schroeder, A. J. Lankford, Yu. G. Kolomensky, G. Piredda, V. Santoro, U. Mallik, G. Batignani, M. Biasini, D. N. Brown, Y. B. Li, Michael Sokoloff, F. Ferrarotto, E. M. T. Puccio, M. Carpinelli, R. Godang, C. Sciacca, R. C. Field, H. Ahmed, T. Leddig, E. A. Kravchenko, D. J. Lange, R. Prepost, G. Casarosa, M. Ebert, P. R. Burchat, J. A. Ernst, L. Zani, A. Rossi, G. A. Cowan, S. Emery, Eleonora Luppi, C. Hearty, Marcello Rotondo, T. Adye, L. Vitale, X. C. Lou, S. Dittrich, J. L. Ritchie, O. Long, Wu S. L., D. Bernard, G. Eigen, A. Filippi, D. J. Summers, G. Rizzo, S. I. Serednyakov, F. Palombo, G. Calderini, A. Soffer, D. S. Chao, S. Martellotti, G. De Nardo, Alberto Lusiani, Nicola Neri, H. M. Lacker, C. Chen, Biplab Dey, N. Tasneem, J. Albert, Fergus Wilson, S. J. Sekula, C. Cartaro, I. M. Peruzzi, D. J. Payne, E. Ben-Haim, E. Paoloni, R. de Sangro, P. Patteri, Yu. I. Skovpen, K. Honscheid, J. W. Gary, P. Taras, M. Heß, R. Kowalewski, M. R. Convery, N. Arnaud, T. Lueck, D. G. Hitlin, J. Chauveau, C. Hast, Simon Akar, A. R. Buzykaev, H. Koch, S. Bettarini, G. Raven, G. Finocchiaro, M. Piccolo, F. Simonetto, C. Touramanis, S. Luitz, K. R. Schubert, R. J. Sobie, A. Roodman, W. Dunwoodie, T. S. Mattison, A. Randle-Conde, W. Gradl, M. K. Sullivan, M. Verderi, R. Faccini, V. Poireau, M. A. Giorgi, J. M. Losecco, G. Marchiori, F. C. Porter, F. Bianchi, I. M. Nugent, R. Calabrese, F. Di Lodovico, E. P. Solodov, Elisa Manoni, Sw. Banerjee, A. P. Onuchin, L. Sun, Adrian John Bevan, Alessandro Pilloni, I. Garzia, S. Passaggio, D. R. Peimer, Thomas Latham, C. Patrignani, V. Tisserand, D. Aston, F. Anulli, D. Bettoni, J. M. Roney, S. Prell, W. Panduro Vazquez, B. G. Pushpawela, A. Gaz, S. H. Robertson, M. V. Purohit, Timothy Gershon, D. A. Roberts, E. Gabathuler, P. F. Harrison, A. M. Eisner, L. Cremaldi, Roger Barlow, J. R. Wilson, and T. S. Miyashita
Subjects: S system, Physics, 010308 nuclear & particles physics, Branching fraction, Detector, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, Mass spectrum, Spectral function, 010306 general physics, Collider, Energy (signal processing)
Abstract: The decay τ^− → K^−K_Sν_τ has been studied using 430×10^6 e^+e^− → τ^+τ^− events produced at a center-of-mass energy around 10.6 GeV at the PEP-II collider and studied with the BABAR detector. The mass spectrum of the K^−K_S system has been measured and the spectral function has been obtained. The measured branching fraction B(τ^− → K^−K_Sν_τ) = (0.739 ± 0.011(stat) ± 0.020(syst)) × 10^(-3) is found to be in agreement with earlier measurements.
Published: 2018

25. Final analysis of KEDR data onJ/ψandψ(2S)masses

Author: A.A. Borodenko, I.I. Morozov, G.M. Tumaikin, V.V. Kolmogorov, Dmitry Shatilov, A.N. Zhuravlev, V.A. Tayursky, G.A. Savinov, A.E. Bondar, Alexey Talyshev, A.M. Sukharev, S.V. Karpov, Evgenii Baldin, A.M. Batrakov, V.N. Zhilich, Alexey Buzykaev, Oleg Meshkov, Andrey Sokolov, Yu. V. Usov, V.F. Kulikov, A. E. Blinov, Alexey Maslennikov, S.B. Oreshkin, S. I. Mishnev, A.A. Osipov, V. S. Bobrovnikov, V. A. Kiselev, N. Yu. Muchnoi, I.B. Nikolaev, Olga Rezanova, Yu.M. Glukhovchenko, Vladimir Blinov, K.Yu. Kotov, D.N. Grigoriev, V.G. Prisekin, S.G. Pivovarov, A.G. Shamov, B.A. Shwartz, E.V. Starostina, A.K. Barladyan, I.N. Okunev, Vladimir Zhulanov, V.V. Neufeld, S.I. Eidelman, I.V. Ovtin, A. Bobrov, D.A. Maksimov, A.Yu. Barnyakov, S.E. Baru, V.V. Anashin, A.V. Bogomyagkov, V.K. Sandyrev, V. M. Malyshev, V.M. Aulchenko, I. A. Kuyanov, Sergey Sinyatkin, Sergey Karnaev, Pavel Piminov, A. P. Onuchin, M.Yu. Barnyakov, A.A. Ruban, E. A. Simonov, S.A. Nikitin, Evgeny Levichev, Yu. A. Tikhonov, E. A. Kravchenko, V. V. Petrov, K. Yu. Todyshev, G.Ya. Kurkin, I.Yu. Basok, Tatyana Kharlamova, A.N. Skrinsky, V. Kudryavtsev, Sergey Peleganchuk, G.V. Karpov, A.I. Vorobiov, Valery I. Telnov, E.A. Kuper, and S.A. Kononov
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, law, Electron–positron annihilation, Resonance, Collider, Beam energy, law.invention
Abstract: We present the analysis of all KEDR data on the determination of J / ψ and ψ ( 2 S ) masses. The data comprise six scans of J / ψ and seven scans of ψ ( 2 S ) which were performed at the VEPP-4M e + e − collider in 2002–2008. The beam energy was determined using the resonance depolarization method. The detector and accelerator conditions during scans were very different that increases the reliability of the averaged results. The analysis accounts for partial correlations of systematic uncertainties on the masses. The following mass values were obtained: M J / ψ = 3096.900 ± 0.002 ± 0.006 MeV , M ψ ( 2 S ) = 3686.099 ± 0.004 ± 0.009 MeV . These results supersede our previous measurements published in 2003 and 2012.
Published: 2015

26. Measurement of the e+e−→π+π−π0π0 cross section using initial-state radiation at BABAR

Author: S. H. Robertson, N. Tasneem, R. Godang, E. A. Kravchenko, H. M. Lacker, Aidan Randle-Conde, G. Vasseur, F. De Mori, Crisostomo Sciacca, D. Aston, K. Griessinger, G. Rizzo, A. Oyanguren, G. Wormser, Denis Bernard, R. Cenci, A. Zallo, E. Grauges, Mario Giorgi, T. E. Latham, M. Carpinelli, J. M. Roney, A. J. S. Smith, J. P. Lees, A. M. Eisner, S. Prell, I. Garzia, V. Poireau, A. Soffer, M. Fritsch, C. L. Davis, U. Mallik, T. S. Miyashita, J. Chauveau, S. Luitz, W. Dunwoodie, F. Simonetto, J. G. Smith, A. Lusiani, B. Bhuyan, J. L. Ritchie, V. E. Blinov, D. E. Hutchcroft, J. Cochran, K. Yu Todyshev, B. G. Fulsom, T. Leddig, B. G. Pushpawela, M. V. Purohit, B. N. Ratcliff, J. Albert, V. Santoro, W. S. Lockman, K. T. Flood, T. S. Mattison, Peter S. Kim, M. Piccolo, R. Stroili, W. J. Wisniewski, M. R. Convery, X. C. Lou, S. Passaggio, D. N. Brown, C. P. Jessop, A. M. Rossi, A. G. Denig, J. Va’vra, R. Y. So, V. B. Golubev, G. Batignani, R. Sacco, M. K. Sullivan, C. Hearty, F. F. Wilson, S. Martellotti, D. W. G. S. Leith, J. W. Gary, M. Hess, A. V. Gritsan, E. Ben-Haim, D. J. Summers, P. F. Harrison, M. Röhrken, S. Emery, R. F. Schwitters, F. Di Lodovico, R. C. Field, R. Gorodeisky, R. J. Sobie, A. Palano, Z. C. Huard, L. Vitale, D. J. Payne, D. A. Roberts, G. Calderini, S. Bettarini, C. Hast, M. Rama, D. J. Lange, F. Martinez-Vidal, G. Finocchiaro, I. M. Nugent, G. Piredda, A. M. Lutz, M. T. Graham, A. Hafner, E. M. T. Puccio, J. J. Walsh, J. A. McKenna, W. Panduro Vazquez, E. Luppi, D. S. Chao, M. S. Alam, J. Ocariz, N. Guttman, M. Davier, A. Roodman, F. Anulli, M. Rotondo, G. De Nardo, B. Oberhof, S. M. Spanier, Alessandro Gaz, B. Echenard, T. J. Gershon, R. de Sangro, P. Taras, E. P. Solodov, R. Cheaib, F. Ferroni, R. Waldi, B. T. Meadows, G. D. Lafferty, G. Raven, G. Marchiori, D. Gamba, M. D. Sokoloff, M. Bellis, P. R. Burchat, Elisa Manoni, P. Patteri, C. Buenger, J. M. LoSecco, E. Fioravanti, J. P. Coleman, C. Voss, B. Dey, F. Palombo, T. Lueck, James R. Wilson, W. Gradl, Stephen Robert Wagner, R. Calabrese, K. R. Schubert, C. Cartaro, C. Touramanis, S. J. Sekula, G. Eigen, A. Jawahery, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, A. P. Onuchin, L. Lanceri, E. Paoloni, G. Cibinetto, P. Ongmongkolkul, L. M. Cremaldi, M. Ebert, D. G. Hitlin, F. Forti, Nicola Neri, A. Filippi, D. B. MacFarlane, A. Calcaterra, R. Cowan, Marco Bomben, Douglas Wright, H. A. Neal, G. Casarosa, A. R. Buzykaev, Hamad Ahmed, A. Beaulieu, Yu. G. Kolomensky, V. P. Druzhinin, C. Bozzi, G. Cowan, K. Honscheid, R. J. Barlow, M. Posocco, Yu. I. Skovpen, G. R. Bonneaud, J. Dorfan, M. Verderi, N. Arnaud, Alessandro Pilloni, D. R. Peimer, O. Gruenberg, E. Gabathuler, W. R. Innes, I. M. Peruzzi, Maurizio Biasini, D. R. Muller, Tamara Vazquez Schroeder, Owen Rosser Long, J. A. Ernst, S. I. Serednyakov, F. Bianchi, L. Sun, Tim Adye, S. Dittrich, M. Chrzaszcz, Adrian John Bevan, R. D. Kass, R. Kowalewski, Sw. Banerjee, J. M. Izen, G. Simi, D. Bettoni, Florian Urs Bernlochner, C. Patrignani, V. Tisserand, Martino Margoni, Simon Akar, and R. Prepost
Subjects: Physics, Muon, Photon, Anomalous magnetic dipole moment, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, BaBar experiment, Electron, 01 natural sciences, Nuclear physics, Positron, 0103 physical sciences, 010306 general physics
Abstract: The process e^+e^− → π^+π^−2π^0γ is investigated by means of the initial-state radiation technique, where a photon is emitted from the incoming electron or positron. Using 454.3 fb^(-1) of data collected around a center-of-mass energy of √s = 10.58 GeV by the BABAR experiment at SLAC, approximately 150000 signal events are obtained. The corresponding nonradiative cross section is measured with a relative uncertainty of 3.6% in the energy region around 1.5 GeV, surpassing all existing measurements in precision. Using this new result, the channel’s contribution to the leading order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon is calculated as (g^(π+π−2π^0)_μ−2)/2=(17.9 ± 0.1_(stat) ± 0.6_(syst))×10^(-10) in the energy range 0.85 GeV < E_(CM) < 1.8 GeV. In the same energy range, the impact on the running of the fine-structure constant at the Z^0-pole is determined as Δα^(π+π−2π0)(M^2_Z) = (4.44 ± 0.02_(stat) ± 0.14_(syst))×10^(-4). Furthermore, intermediate resonances are studied and especially the cross section of the process e^+e^− → ωπ^0 → π^+π^−2π^0 is measured.
Published: 2017

27. Evidence for CP violation in B+→K*(892)+π0 from a Dalitz plot analysis of B+→KS0π+π0 decays

Author: J. W. Gary, R. Gorodeisky, M. Simard, D. A. Roberts, A. M. Lutz, A. M. Eisner, J. Olsen, M. T. Graham, A. Hafner, E. M. T. Puccio, U. Mallik, Douglas Wright, Peter S. Kim, A. G. Denig, A. V. Gritsan, M. Röhrken, Cheng Chen, T. S. Miyashita, N. Neri, M. V. Purohit, A. Palano, R. F. Schwitters, F. De Mori, R. Contri, G. J. King, J. Albert, D. J. Bard, Sridhara Dasu, C. Cartaro, A. Khan, K. T. Flood, David Hutchcroft, L. Piemontese, P. Patteri, Denis Bernard, G. Lynch, Simon Akar, R. Prepost, D. Lindemann, M. J. Lewczuk, Hamad Ahmed, C. Bünger, E. Gabathuler, W. R. Innes, P. F. Harrison, A. Filippi, F. C. Porter, T. Leddig, R. Sacco, A. J. S. Smith, D. B. MacFarlane, A. Calcaterra, S. J. Sekula, A. Jawahery, B. N. Ratcliff, F. Di Lodovico, J. Va’vra, V. Prasad, B. Bhuyan, B. G. Fulsom, A. Adametz, J. Chauveau, E. A. Kravchenko, N. Guttman, B. Stugu, Crisostomo Sciacca, D. Aston, G. Rizzo, G. Marchiori, D. Su, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, J. D. Richman, A. P. Onuchin, Pablo Villanueva-Perez, L. Lanceri, R. Godang, Dmytro Kovalskyi, M. Piccolo, L. M. Cremaldi, H. R. Band, W. S. Lockman, G. Vasseur, I. M. Peruzzi, R. Cowan, B. Echenard, M. Chrzaszcz, J. P. Lees, A. Stocchi, M. Ebert, M. R. Convery, R. Cenci, D. J. Payne, C. Voß, G. Cibinetto, J. L. Ritchie, Marco Bomben, S. Martellotti, J. Ocariz, Maria Roberta Monge, C. H. Cheng, P. Taras, E. P. Solodov, A. Zallo, H. M. Lacker, H. L. Lynch, G. Batignani, Tim Adye, E. Paoloni, J. R. Fry, R. Cheaib, Y. B. Pan, J. Cochran, D. Bettoni, M. Fritsch, S. I. Serednyakov, R. Kowalewski, F. Bianchi, E. O. Olaiya, E. Fioravanti, E. Ben-Haim, R. D. Kass, S. Luitz, R. Waldi, D. G. Hitlin, S. Bettarini, A. J. Bevan, M. Gaspero, V. Santoro, Corrado Angelini, S. Dittrich, G. Onorato, C. P. Jessop, P. Ongmongkolkul, R. de Sangro, S. L. Wu, Florian Urs Bernlochner, R. Y. So, J. J. Walsh, F. Palombo, T. Lueck, D. Lopes Pegna, J. M. LoSecco, V. B. Golubev, B. Dey, Bogdan Malaescu, B. T. Meadows, P. C. Bloom, W. H. Toki, G. Raven, C. Touramanis, S. M. Spanier, M. Hess, Yu. I. Skovpen, R. Andreassen, M. K. Sullivan, B. G. Pushpawela, I. M. Nugent, W. J. Wisniewski, S. Passaggio, H. W. Wulsin, M. D. Sokoloff, V. P. Druzhinin, T. E. Latham, M. Carpinelli, P. R. Burchat, C. Bozzi, G. Cowan, Denis Derkach, K. Honscheid, M. Rotondo, Yu. G. Kolomensky, C. L. Davis, O. Grünberg, G. De Nardo, M. J. Lee, G. Grosdidier, B. A. Schumm, S. Prell, V. E. Blinov, I. Garzia, Alessandro Pilloni, E. Grauges, C. Patrignani, Mario Giorgi, L. T. Kerth, M. Rama, F. Forti, V. Poireau, G. D. Lafferty, Z. C. Huard, D. S. Chao, J. A. McKenna, D. R. Peimer, A. Soffer, R. J. Barlow, J. M. Roney, M. Morandin, A. Lusiani, K. Yu Todyshev, D. W. G. S. Leith, Christopher West, V. Tisserand, G. Wormser, M. Posocco, M. Davier, C. Hast, J. P. Coleman, U. Uwer, F. Anulli, R. Stroili, F. Simonetto, J. M. Izen, R. H. Schindler, G. Calderini, J. G. Smith, D. J. Lange, G. Piredda, H. A. Neal, W. Panduro Vazquez, G. Casarosa, N. Tasneem, Alessandro Gaz, T. M. Hong, S. H. Robertson, T. S. Mattison, Maurizio Biasini, D. R. Muller, Aidan Randle-Conde, Herbert Koch, Martino Margoni, T. J. Gershon, M. Franco Sevilla, A. R. Buzykaev, A. Beaulieu, Tamara Vazquez Schroeder, R. Ayad, James R. Wilson, G. R. Bonneaud, J. Dorfan, D. N. Brown, K. Griessinger, Owen Rosser Long, A. Oyanguren, A. Seiden, F. F. Wilson, X. C. Lou, W. Dunwoodie, C. Hearty, William T. Ford, R. Calabrese, H. H. F. Choi, B. Hamilton, S. Emery, Elisa Manoni, J. A. Ernst, D. J. Summers, G. P. Dubois-Felsmann, P. Roudeau, L. Sun, R. J. Sobie, M. Verderi, S. Playfer, B. Spaan, L. Vitale, F. Martinez-Vidal, Ph Leruste, N. Arnaud, H. Briand, W. Gradl, E. Luppi, M. L. Perl, A. M. Rossi, Sw. Banerjee, G. Eigen, R. C. Field, A. Roodman, G. Finocchiaro, V. Luth, M. S. Alam, A. Snyder, B. Oberhof, T. Pulliam, G. Simi, F. Ferroni, D. Gamba, M. Bellis, P. M. Patel, Stephen Robert Wagner, and K. R. Schubert
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Hadron, Dalitz plot, Elementary particle, 01 natural sciences, Nuclear physics, Particle decay, 0103 physical sciences, CP violation, B meson, 010306 general physics
Abstract: We report a Dalitz plot analysis of charmless hadronic decays of charged B mesons to the final state K^0_Sπ^+π^0 using the full BABAR data set of 470.9±2.8 million BB[overbar] events collected at the Υ(4S)resonance. We measure the overall branching fraction and CP asymmetry to be B(B^+→K^0π^+π^0)=(31.8±1.8±2.1+^(6.0)_(−0.0))×10^(-6) and A_(CP)(B^+→K^0π^+π^0)=0.07±0.05±0.03^(+0.02)_(−0.03), where the uncertainties are statistical, systematic, and due to the signal model, respectively. This is the first measurement of the branching fraction for B^+→K^0π^+π^0. We find first evidence of a CP asymmetry in B^+→K∗(892)+π^0 decays: A_(CP)(B^+→K∗(892)^+π^0)=−0.52±0.14±0.04^(+0.04)_(−0.02). The significance of this asymmetry, including systematic and model uncertainties, is 3.4 standard deviations. We also measure the branching fractions and CP asymmetries for three other intermediate decay modes.
Published: 2017

28. Search for Invisible Decays of a Dark Photon Produced in e+e− Collisions at BaBar

Author: D. J. Payne, M. Verderi, J. Chauveau, F. De Mori, A. M. Rossi, Joseph Izen, S. Martellotti, I. M. Nugent, A. Giuffrida, D. S. Chao, M. Davier, V. B. Golubev, Heiko Lacker, A. Roodman, Roland Waldi, Abner Soffer, J. L. Ritchie, F. Ferroni, U. Mallik, Paul Fraser Harrison, Ju-Young Kim, T. E. Latham, M. Carpinelli, Stephen Robert Wagner, M. K. Sullivan, J. Ocariz, T. S. Miyashita, K. R. Schubert, N. Neri, T. S. Mattison, E. Fioravanti, C. Hast, D. J. Lange, G. Piredda, G. Wormser, A. Palano, Florian Urs Bernlochner, F. Palombo, T. Lueck, R. Y. So, R. Sacco, R. Godang, Z. C. Huard, W. Panduro Vazquez, P. Taras, E. P. Solodov, D. B. MacFarlane, M. Rama, R. Cenci, M. Fritsch, J. W. Gary, J. A. McKenna, David Hutchcroft, E. Paoloni, A. Zallo, T. J. Gershon, T. Schroeder, S. Bettarini, Yu G. Kolomensky, W. S. Lockman, J. P. Coleman, W. R. Innes, F. Anulli, S. Luitz, A. Filippi, P. Patteri, Alessandro Gaz, D. Gamba, J. Va’vra, M. V. Purohit, M. Bellis, R. Cheaib, J. Albert, Elisa Manoni, B. Bhuyan, D. Aston, C. H. Chen, Andrei Gritsan, B. G. Fulsom, J. J. Walsh, S. M. Spanier, J. Dorfan, M. Heß, N. Tasneem, D. N. Brown, R. Faccini, F. Ferrarotto, A. J. Lankford, Mark Derdzinski, R. Cowan, L. M. Cremaldi, M. T. Graham, J. M. LoSecco, J. P. Lees, F. Le Diberder, S. Prell, A. M. Lutz, I. Garzia, A. J.S. Smith, D. G. Hitlin, James H Cochran, B. Dey, G. D. Lafferty, K. Yu Todyshev, R. C. Field, A. Oyanguren, S. H. Robertson, R. Gorodeisky, Herbert Koch, S. Passaggio, R. Stroili, F. Forti, D. A. Roberts, C. H. Cheng, H. A. Neal, P. Ongmongkolkul, K. Griessinger, Aidan Randle-Conde, I. M. Peruzzi, G. Casarosa, C. Bünger, Yu I. Skovpen, R. de Sangro, G. R. Bonneaud, V. Santoro, T. Leddig, A. Lusiani, C. Touramanis, W. J. Wisniewski, Sau Lan Wu, A. Hafner, O. Grünberg, E. M. T. Puccio, A. R. Buzykaev, M. S. Alam, A. Beaulieu, E. Grauges, Mario Giorgi, James R. Wilson, R. Calabrese, G. Eigen, Simon Akar, D. J. Summers, M. Bomben, R. J. Sobie, L. Vitale, F. Martinez-Vidal, Dominik Müller, G. A. Cowan, G. J. King, C. L. Davis, M. Ebert, J. M. Roney, Stephen Sekula, J. G. Smith, V. P. Druzhinin, C. Bozzi, E. Luppi, H. Ahmed, N. Guttman, G. De Nardo, R. F. Schwitters, F. Simonetto, G. Marchiori, A. Jawahery, A. P. Onuchin, X. C. Lou, B. T. Meadows, G. Raven, V. E. Blinov, K. Honscheid, R. J. Barlow, G. Cibinetto, M. Posocco, Crisostomo Sciacca, G. Rizzo, Colin Jessop, R. Prepost, M. D. Sokoloff, P. R. Burchat, A. Calcaterra, D. W. G. S. Leith, G. Calderini, S. Emery, E. A. Kravchenko, G. Vasseur, K. T. Flood, Alessandro Pilloni, D. R. Peimer, C. Hearty, R. Kowalewski, C. Cartaro, Maurizio Biasini, Owen Rosser Long, L. Sun, Adrian John Bevan, Douglas Wright, S. I. Serednyakov, F. Bianchi, S. Dittrich, E. Gabathuler, M. R. Convery, F. C. Porter, A. G. Denig, M. Chrzaszcz, C. Voß, D. Bettoni, B. N. Ratcliff, C. Patrignani, V. Tisserand, A. M. Eisner, Sw. Banerjee, G. Simi, N. Arnaud, Tim Adye, R. D. Kass, Martino Margoni, G. Finocchiaro, M. Rotondo, M. Röhrken, F. F. Wilson, B. Oberhof, V. Poireau, M. Piccolo, P. C. Kim, G. Batignani, E. Ben-Haim, B. Echenard, D. Bernard, W. Dunwoodie, J. A. Ernst, W. Gradl, B. G. Pushpawela, L. Lanceri, and F. Di Lodovico
Subjects: Physics, Particle physics, Muon, 010308 nuclear & particles physics, Electron–positron annihilation, Dark matter, General Physics and Astronomy, Coupling (probability), 01 natural sciences, Dark photon, B-factory, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), 010306 general physics, Boson
Abstract: We search for single-photon events in 53 fb^{-1} of e^{+}e^{-} collision data collected with the BABAR detector at the PEP-II B-Factory. We look for events with a single high-energy photon and a large missing momentum and energy, consistent with production of a spin-1 particle A^{'} through the process e^{+}e^{-}→γA^{'}; A^{'}→invisible. Such particles, referred to as "dark photons," are motivated by theories applying a U(1) gauge symmetry to dark matter. We find no evidence for such processes and set 90% confidence level upper limits on the coupling strength of A^{'} to e^{+}e^{-} in the mass range m_{A^{'}}≤8 GeV. In particular, our limits exclude the values of the A^{'} coupling suggested by the dark-photon interpretation of the muon (g-2)_{μ} anomaly, as well as a broad range of parameters for the dark-sector models.
Published: 2017

29. Dalitz plot analyses of J/ψ→π+π−π0 , J/ψ→K+K−π0 , and J/ψ→Ks0K±π∓ produced via e+e− annihilation with initial-state radiation

Author: Maurizio Biasini, F. Bianchi, J. Chauveau, F. De Mori, R. Kowalewski, S. Dittrich, Owen Rosser Long, J. A. Ernst, A. P. Onuchin, L. Sun, Adrian John Bevan, Alessandro Pilloni, D. R. Peimer, C. Hearty, Z. C. Huard, F. Di Lodovico, Roberto Calabrese, Heiko Lacker, Denis Bernard, D. J. Payne, R. Faccini, A. J. Lankford, S. Prell, J. Ocariz, A. Roodman, C. Bozzi, B. N. Ratcliff, D. W. G. S. Leith, K. R. Schubert, C. H. Chen, S. M. Spanier, I. M. Peruzzi, Vladimir Blinov, J. L. Ritchie, S. I. Serednyakov, E. Fioravanti, G. Finocchiaro, C. H. Cheng, Sw. Banerjee, A. G. Denig, C. Bünger, J. W. Gary, G. Calderini, E. A. Kravchenko, G. Rizzo, M. Rama, Roland Waldi, Nicolas Arnaud, R. Cowan, A. Zallo, James H Cochran, V. Poireau, R. Cheaib, S. H. Robertson, F. Ferroni, Michael R. Pennington, L. M. Cremaldi, Herbert Koch, G. De Nardo, Crisostomo Sciacca, D. Aston, R. Y. So, S. L. Wu, Yu. I. Skovpen, H. A. Neal, A. Lusiani, J. M. LoSecco, M. Röhrken, Peter S. Kim, Eleonora Luppi, K. Griessinger, Abner Soffer, J. P. Lees, G. A. Cowan, Paul Fraser Harrison, B. Dey, J. Dorfan, V. P. Druzhinin, M. T. Graham, Florian Urs Bernlochner, F. Palombo, T. Lueck, Douglas Wright, G. Cibinetto, R. Godang, U. Mallik, E. Gabathuler, Ju-Young Kim, G. Piredda, J. J. Walsh, W. R. Innes, F. C. Porter, R. Cenci, G. J. King, A. R. Buzykaev, D. N. Brown, P. Ongmongkolkul, J. M. Roney, B. Bhuyan, A. Beaulieu, M. Verderi, B. G. Fulsom, N. Tasneem, F. Le Diberder, C. Cartaro, R. C. Field, M. Heß, J. A. McKenna, M. Chrzaszcz, C. Voß, T. E. Latham, Stephen Robert Wagner, E. Manoni, Colin Jessop, R. Prepost, E. Paoloni, R. de Sangro, G. D. Lafferty, D. G. Hitlin, B. Echenard, A. Oyanguren, Randall Sobie, J. G. Smith, Andrei Gritsan, M. Fritsch, M. S. Alam, Aidan Randle-Conde, S. Passaggio, G. R. Bonneaud, Stephen Sekula, D. E. Hutchcroft, Adam P. Szczepaniak, A. M. Lutz, T. Leddig, A. Calcaterra, M. K. Sullivan, Yu G. Kolomensky, A. M. Eisner, G. Batignani, C. Touramanis, W. S. Lockman, A. Jawahery, F. F. Wilson, R. F. Schwitters, E. Ben-Haim, B. Oberhof, O. Grünberg, V. Santoro, I. Garzia, K. Honscheid, M. R. Convery, C. Patrignani, V. Tisserand, K. Yu. Todyshev, G. Vasseur, R. J. Barlow, J. Va’vra, A. Filippi, K. T. Flood, Daniel A. Roberts, D. J. Summers, Tim Adye, M. V. Purohit, D. Bettoni, T. S. Mattison, R. D. Kass, D. Gamba, J. Albert, W. J. Wisniewski, S. Luitz, Giulia Casarosa, G. Wormser, M. Bomben, S. Emery, S. Martellotti, C. Hast, D. J. Lange, L. Vitale, F. Martinez-Vidal, N. Neri, W. Panduro Vazquez, N. Guttman, Dominik Müller, E. Grauges, Mario Giorgi, V. B. Golubev, T. J. Gershon, M. Rotondo, H. Ahmed, G. Marchiori, F. Simonetto, T. Schroeder, Gabriele Simi, W. Gradl, C. L. Davis, L. Lanceri, P. Patteri, P. Taras, W. Dunwoodie, A. Gaz, X. C. Lou, B. G. Pushpawela, F. Forti, J. P. Coleman, F. Anulli, A. Palano, Martino Margoni, M. Piccolo, S. Bettarini, E. P. Solodov, T. S. Miyashita, M. Posocco, R. Gorodeisky, M. Bellis, A. Hafner, F. Ferrarotto, E. M. T. Puccio, M. Ebert, D. B. MacFarlane, R. Stroili, R. Sacco, James R. Wilson, Joseph Izen, G. Eigen, A. J.S. Smith, Simon Akar, M. Carpinelli, A. Rossi, B. T. Meadows, G. Raven, M. D. Sokoloff, P. R. Burchat, I. M. Nugent, D. S. Chao, and M. Davier
Subjects: Physics, Particle physics, Annihilation, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, Dalitz plot, 01 natural sciences, Nuclear physics, Particle decay, 0103 physical sciences, 010306 general physics, Dimensionless quantity
Abstract: We study the processes e^+e^− → γISR J/ψ, where J/ψ → π^+π^−π^0, J/ψ → K^+K^−π^0, and J/ψ → K^0_SK^±π^∓ using a data sample of 519 fb^(−1) recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e^+e^− collider at center-of-mass energies at and near the Υ(nS) (n=2,3,4) resonances. We measure the ratio of branching fractions R_1 = ^(B(J/ψ → K^+K^−π^0)) /_(B(J/ψ → π^+π^−π^0)) and R_2 = ^(B(J/ψ → K^0_SK^±π^∓))/_(B(J/ψ → π^+π^−π^0)). We perform Dalitz plot analyses of the three J/ψ decay modes and measure fractions for resonances contributing to the decays. We also analyze the J/ψ → π^+π^−π^0 decay using the Veneziano model. We observe structures compatible with the presence of ρ(1450) in all three J/ψ decay modes and measure the relative branching fraction: R(ρ(1450)) = ^(B(ρ(1450) → K^+K^−))/_(B(ρ(1450) → π^+π^−)) = 0.307±0.084(stat)±0.082(sys).
Published: 2017

30. Measurement of the inclusive electron spectrum from B meson decays and determination of |Vub

Author: F. Di Lodovico, D. J. Payne, F. Simonetto, R. H. Schindler, E. A. Kravchenko, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, C. H. Cheng, J. D. Richman, F. De Mori, S. Bettarini, A. J. Bevan, Maurizio Biasini, D. R. Muller, C. Bünger, J. R. Fry, Pablo Villanueva-Perez, H. A. Neal, L. Lanceri, G. Casarosa, Tamara Vazquez Schroeder, A. Adametz, Denis Bernard, G. Vasseur, R. de Sangro, J. L. Ritchie, Alam, S. J. Sekula, A. Jawahery, Owen Rosser Long, R. Y. So, A. Seiden, M. Hess, Peter S. Kim, R. Andreassen, N. Tasneem, A. J. S. Smith, S. M. Spanier, G. Wormser, J. A. Ernst, A. R. Buzykaev, J. Va’vra, G. Onorato, W. H. Toki, A. Beaulieu, L. T. Kerth, A. P. Onuchin, P. Roudeau, L. Sun, X. C. Lou, Aidan Randle-Conde, A. Filippi, R. Godang, V. Prasad, J. Chauveau, G. Lynch, G. Cibinetto, M. Franco Sevilla, V. B. Golubev, Elisa Manoni, D. Bettoni, N. Guttman, B. Stugu, S. Playfer, G. Marchiori, A. V. Gritsan, B. T. Meadows, S. Martellotti, D. E. Hutchcroft, W. Dunwoodie, T. Leddig, S. Luitz, H. W. Wulsin, P. Ongmongkolkul, G. Raven, E. Grauges, H. M. Lacker, H. L. Lynch, A. M. Eisner, Sridhara Dasu, C. Cartaro, M. Röhrken, D. Su, G. P. Dubois-Felsmann, H. R. Band, W. S. Lockman, A. Palano, P. Taras, E. P. Solodov, S. H. Robertson, B. N. Ratcliff, M. Rama, M. Piccolo, G. Batignani, R. Cowan, T. E. Latham, Florian Urs Bernlochner, B. G. Pushpawela, M. J. Lee, M. Carpinelli, J. A. McKenna, Christopher West, C. Patrignani, M. R. Convery, M. V. Purohit, P. R. Burchat, J. Albert, J. M. Roney, G. J. King, M. Gaspero, Cheng Chen, V. Tisserand, Herbert Koch, David Nathan Brown, P. Patteri, Yu. G. Kolomensky, G. R. Bonneaud, J. Dorfan, I. M. Nugent, L. M. Cremaldi, Corrado Angelini, J. G. Smith, E. Ben-Haim, J. P. Coleman, C. Hearty, R. Cenci, D. Lopes Pegna, M. Ebert, D. B. MacFarlane, D. J. Summers, Dmytro Kovalskyi, A. Zallo, E. O. Olaiya, E. Fioravanti, D. S. Chao, V. P. Druzhinin, C. Bozzi, G. Cowan, A. Calcaterra, K. Honscheid, J. P. Lees, F. Palombo, T. Lueck, D. Lindemann, B. A. Schumm, M. J. Lewczuk, A. G. Denig, Sw. Banerjee, M. Davier, R. Contri, R. J. Barlow, T. S. Mattison, W. J. Wisniewski, R. J. Sobie, Giorgi, M. Posocco, M. Fritsch, M. Verderi, J. Cochran, Ph Leruste, C. L. Davis, N. Arnaud, D. G. Hitlin, C. Touramanis, L. Vitale, Marco Bomben, F. Martinez-Vidal, M. Rotondo, S. Passaggio, Crisostomo Sciacca, D. Aston, G. Rizzo, V. Santoro, V. E. Blinov, K. Griessinger, R. F. Schwitters, G. Simi, K. T. Flood, U. Mallik, Douglas Wright, G. De Nardo, B. Hamilton, A. Oyanguren, O. Grünberg, E. Luppi, F. F. Wilson, P. F. Harrison, D. W. G. S. Leith, M. L. Perl, F. Forti, R. Sacco, G. Grosdidier, B. Echenard, A. M. Rossi, T. S. Miyashita, D. J. Bard, N. Neri, H. H. F. Choi, G. Calderini, S. Emery, S. Prell, I. Garzia, L. Piemontese, V. Poireau, Hamad Ahmed, A. Soffer, A. Lusiani, E. Gabathuler, W. R. Innes, F. C. Porter, T. M. Hong, R. Gorodeisky, C. Hast, D. J. Lange, M. Simard, D. A. Roberts, G. Piredda, A. M. Lutz, W. Panduro Vazquez, M. Chrzaszcz, J. Olsen, M. T. Graham, Sau Lan Wu, A. Hafner, J. Ocariz, E. M. T. Puccio, T. J. Gershon, R. Cheaib, I. M. Peruzzi, R. Waldi, J. M. LoSecco, C. Voss, B. Dey, Bogdan Malaescu, S. I. Serednyakov, F. Bianchi, Z. C. Huard, B. Spaan, S. Dittrich, H. Briand, W. Gradl, R. C. Field, G. Finocchiaro, V. Luth, A. Snyder, B. Oberhof, F. Anulli, Alessandro Gaz, B. Bhuyan, B. G. Fulsom, C. P. Jessop, M. K. Sullivan, D. Gamba, M. Bellis, David Norvil Brown, P. C. Bloom, Sokoloff, Y. B. Pan, R. Kowalewski, Denis Derkach, Alessandro Pilloni, D. R. Peimer, M. Morandin, K. Yu Todyshev, U. Uwer, R. Stroili, R. Ayad, James R. Wilson, R. Calabrese, J. J. Walsh, G. Eigen, W. T. Ford, Tim Adye, G. D. Lafferty, R. D. Kass, J. M. Izen, Martino Margoni, Yu. I. Skovpen, J. W. Gary, A. Khan, A. Stocchi, Maria Roberta Monge, E. Paoloni, A. Roodman, T. Pulliam, F. Ferroni, P. M. Patel, Stephen Robert Wagner, K. R. Schubert, Simon Akar, and R. Prepost
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, Cabibbo–Kobayashi–Maskawa matrix, Branching fraction, media_common.quotation_subject, Hadron, Resonance, Dalitz plot, 01 natural sciences, Asymmetry, 0103 physical sciences, CP violation, 010306 general physics, media_common
Abstract: We report a Dalitz plot analysis of charmless hadronic decays of charged $B$ mesons to the final state $K_{\rm S}^{0}\pi^{+}\pi^{0}$ using the full BaBar dataset of $470.9\pm2.8$ million $B\bar{B}$ events collected at the $\Upsilon(4S)$ resonance. We measure the overall branching fraction and $CP$ asymmetry to be ${\cal B}\left(B^{+}\to K^{0}\pi^{+}\pi^{0}\right) = \left(45.9 \pm 2.6 \pm 3.0^{+8.6}_{-0.0}\right)\times10^{-6}$ and $A_{CP}\left(B^{+}\to K^{0}\pi^{+}\pi^{0}\right) = 0.07 \pm 0.05 \pm 0.03^{+0.02}_{-0.03}$, where the uncertainties are statistical, systematic, and due to the signal model, respectively. This is the first measurement of the branching fraction for $B^{+} \to K^{0}\pi^{+}\pi^{0}$. We find first evidence of a $CP$ asymmetry in $B^{+}\to K^{*}(892)^{+}\pi^{0}$ decays: $A_{CP}\left(B^{+}\to K^{*}(892)^{+}\pi^{0}\right)=-0.52 \pm 0.14 \pm 0.04^{+0.04}_{-0.02}$. The significance of this asymmetry, including systematic and model uncertainties, is $3.4$ standard deviations. We also measure the branching fractions and $CP$ asymmetries for three other intermediate decay modes.
Published: 2017

31. Search for B+→K+τ+τ− at the BaBar Experiment

Author: R. Calabrese, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, R. Cenci, R. Sacco, A. Zallo, Elisa Manoni, D. Aston, Gabriele Simi, B. Echenard, M. Fritsch, C. L. Davis, G. A. Cowan, A. G. Denig, D. Bernard, M. T. Graham, Eleonora Luppi, J. L. Ritchie, S. I. Serednyakov, N. Tasneem, S. Martellotti, M. Carpinelli, I. M. Nugent, D. S. Chao, M. Davier, V. Poireau, M. Piccolo, G. Finocchiaro, T. Leddig, M. V. Purohit, Aidan Randle-Conde, I. M. Peruzzi, A. J.S. Smith, N. Arnaud, J. Albert, S. Bettarini, G. R. Bonneaud, S. Emery, G. Batignani, Simon Akar, W. R. Innes, George Lafferty, B. Oberhof, R. F. Schwitters, A. M. Rossi, A. Filippi, Joseph Izen, K. Yu. Todyshev, A. Roodman, R. Y. So, E. Fioravanti, Roland Waldi, F. Ferroni, Alessandro Pilloni, B. Bhuyan, J. M. Roney, J. Dorfan, Abner Soffer, Paul Fraser Harrison, E. P. Solodov, T. S. Miyashita, Ju-Young Kim, E. Grauges, F. Simonetto, R. Cowan, F. Bianchi, Miriam Heß, A. Calcaterra, Stephen Robert Wagner, F. Forti, M. K. Sullivan, Mario Giorgi, A. Oyanguren, C. Cartaro, G. Raven, J. J. Walsh, S. Dittrich, M. Röhrken, D. R. Peimer, Giulia Casarosa, M. D. Sokoloff, G. Wormser, D. N. Brown, F. Di Lodovico, D. J. Payne, J. A. McKenna, P. R. Burchat, W. Dunwoodie, M. R. Convery, C. Bünger, J. A. Ernst, W. Gradl, E. Ben-Haim, L. Lanceri, D. W. G. S. Leith, Colin Jessop, R. Prepost, E. Paoloni, B. G. Pushpawela, C. H. Cheng, Timothy Gershon, Alberto Lusiani, H. A. Neal, X. C. Lou, R. Godang, R. de Sangro, M. Verderi, Biplab Dey, B. N. Ratcliff, Fergus Wilson, R. Gorodeisky, D. Gamba, D. A. Roberts, G. Calderini, P. Taras, C. Touramanis, T. Schroeder, U. Mallik, G. Vasseur, K. T. Flood, J. Chauveau, F. De Mori, A. R. Buzykaev, M. S. Alam, Roger Barlow, Martino Margoni, B. G. Fulsom, A. Beaulieu, P. C. Kim, N. Guttman, G. De Nardo, Sau Lan Wu, A. Hafner, E. M. T. Puccio, A. Jawahery, R. Kowalewski, Yu. I. Skovpen, G. Cibinetto, C. Hearty, G. Marchiori, Andrei Gritsan, D. J. Summers, Florian Urs Bernlochner, F. Palombo, T. Lueck, K. R. Schubert, M. Ebert, M. Bomben, Maurizio Biasini, L. Vitale, F. Martinez-Vidal, Marcello Rotondo, Dominik Müller, C. H. Chen, Stephen Sekula, Owen Rosser Long, H. Ahmed, S. M. Spanier, Vladimir Blinov, L. M. Cremaldi, J. P. Coleman, J. R. Smith, A. P. Onuchin, L. Sun, Adrian John Bevan, C. Bozzi, D. G. Hitlin, R. C. Field, Matteo Rama, Nicola Neri, S. Prell, K. Honscheid, M. Bellis, Tim Adye, R. D. Kass, T. S. Mattison, James H Cochran, M. Posocco, V. P. Druzhinin, C. Hast, D. J. Lange, G. Piredda, R. Stroili, Marcin Chrzaszcz, James R. Wilson, G. Eigen, A. M. Lutz, S. Passaggio, V. B. Golubev, A. Palano, David Hutchcroft, S. Luitz, P. Patteri, J. Va’vra, D. B. MacFarlane, G. Rizzo, J. P. Lees, V. Santoro, O. Grünberg, Christian Voß, Yu G. Kolomensky, P. Ongmongkolkul, E. A. Kravchenko, Crisostomo Sciacca, W. J. Wisniewski, G. J. King, J. Ocariz, J. W. Gary, R. Cheaib, J. M. LoSecco, S. H. Robertson, Herbert Koch, K. Griessinger, Brian Meadows, Z. C. Huard, W. Panduro Vazquez, V. Luth, W. S. Lockman, F. Anulli, Alessandro Gaz, A. M. Eisner, Sw. Banerjee, D. Bettoni, I. Garzia, Thomas Latham, C. Patrignani, V. Tisserand, E. Gabathuler, F. C. Porter, and Douglas Wright
Subjects: Physics, Particle physics, Muon, Neutral current, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, BaBar experiment, 01 natural sciences, Nuclear physics, 0103 physical sciences, B meson, Neutrino, 010306 general physics, Energy (signal processing), Lepton
Abstract: We search for the rare flavor-changing neutral current process B^{+}→K^{+}τ^{+}τ^{-} using data from the BABAR experiment. The data sample, collected at the center-of-mass energy of the ϒ(4S) resonance, corresponds to a total integrated luminosity of 424 fb^{-1} and to 471×10^{6} BB[over ¯] pairs. We reconstruct one B meson, produced in the ϒ(4S)→B^{+}B^{-} decay, in one of many hadronic decay modes and search for activity compatible with a B^{+}→K^{+}τ^{+}τ^{-} decay in the rest of the event. Each τ lepton is required to decay leptonically into an electron or muon and neutrinos. Comparing the expected number of background events with the data sample after applying the selection criteria, we do not find evidence for a signal. The resulting upper limit, at the 90% confidence level, is B(B^{+}→K^{+}τ^{+}τ^{-})
Published: 2017

32. Measurement of J/ψ→γηc decay rate and ηc parameters at KEDR

Author: A. N. Yushkov, A.A. Osipov, S. I. Mishnev, A. P. Onuchin, Vladimir Blinov, V.M. Aulchenko, A.K. Barladyan, A.N. Zhuravlev, Sergey Peleganchuk, M.Yu. Barnyakov, G.A. Savinov, E.V. Starostina, Alexey Maslennikov, E.A. Kuper, Anton Poluektov, V.V. Anashin, Alexey Talyshev, V.V. Neufeld, V.V. Gulevich, V.G. Prisekin, A.Yu. Barnyakov, Olga Rezanova, E. A. Kravchenko, A.N. Skrinsky, I. Bedny, N. Yu. Muchnoi, D. A. Maksimov, V.K. Sandyrev, I.B. Nikolaev, A.E. Bondar, A.S. Medvedko, S.V. Karpov, A.V. Bogomyagkov, Evgenii Baldin, I.Yu. Basok, Yu. V. Usov, A. Sokolov, V. M. Malyshev, G.M. Tumaikin, I.I. Morozov, Yu.M. Glukhovchenko, V.N. Zhilich, V. V. Petrov, Oleg Meshkov, S.I. Eidelman, Dmitry Shatilov, A.A. Ruban, A. Bobrov, B.A. Shwartz, S.B. Oreshkin, Victor Bobrovnikov, Vladimir Zhulanov, V.F. Kulikov, A.M. Sukharev, Tatyana Kharlamova, S.G. Pivovarov, A.G. Shamov, A. E. Blinov, V.A. Tayursky, K.Yu. Kotov, I.N. Okunev, V. A. Kiselev, D. V. Gusev, A. R. Buzykaev, S.E. Baru, S.A. Kononov, G.Ya. Kurkin, G.V. Karpov, Evgeny Levichev, A.I. Vorobiov, Valery I. Telnov, E. A. Simonov, S.A. Nikitin, Victor Smaluk, Yu. A. Tikhonov, I.O. Orlov, Sergey Sinyatkin, Pavel Piminov, G. E. Pospelov, K. Yu. Todyshev, and Sergey Karnaev
Subjects: Physics, Nuclear and High Energy Physics, Photon, law, Electron–positron annihilation, Detector, Radiative decay, Atomic physics, Collider, law.invention
Abstract: Using the inclusive photon spectrum based on a data sample collected at the J / ψ peak with the KEDR detector at the VEPP-4M e + e − collider, we measured the rate of the radiative decay J / ψ → γ η c as well as η c mass and width. Taking into account an asymmetric photon lineshape we obtained Γ γ η c 0 = 2.98 ± 0.18 − 0.33 + 0.15 keV , M η c = 2983.5 ± 1.4 − 3.6 + 1.6 MeV / c 2 , Γ η c = 27.2 ± 3.1 − 2.6 + 5.4 MeV .
Published: 2014

33. Measurement of the ratio of the lepton widths Γee/Γμμ for the J/ψ meson

Author: Andrey Sokolov, E. A. Simonov, S.A. Nikitin, Anton Poluektov, I.Yu. Basok, S.E. Baru, I.N. Okunev, S.G. Pivovarov, V.V. Gulevich, B.A. Shwartz, Evgeny Levichev, Yu. A. Tikhonov, I.I. Morozov, A.M. Sukharev, E.A. Kuper, V.N. Zhilich, A. Yu. Barnyakov, A.N. Zhuravlev, I.V. Ovtin, V. E. Blinov, A.E. Bondar, Vladimir Zhulanov, Dmitry Shatilov, Victor Bobrovnikov, Oleg Meshkov, Evgenii Baldin, A.A. Osipov, S. I. Mishnev, A. P. Onuchin, Sergey Peleganchuk, A.G. Shamov, Tatyana Kharlamova, V.M. Aulchenko, V. M. Malyshev, S.B. Oreshkin, V.F. Kulikov, A.M. Batrakov, V. A. Kiselev, S.A. Kononov, E.V. Starostina, A.N. Skrinsky, G.A. Savinov, V.V. Kolmogorov, A.V. Bogomyagkov, V.V. Neufeld, V. Kudryavtsev, Alexey Talyshev, Yu. V. Usov, I. B. Nikolaev, A. R. Buzykaev, A.K. Barladyan, Yu.M. Glukhovchenko, K. Yu. Todyshev, D. V. Gusev, A.A. Ruban, N. Yu. Muchnoi, Valery I. Telnov, S.V. Karpov, I.O. Orlov, V.R. Groshev, Sergey Sinyatkin, G.Ya. Kurkin, V.A. Tayursky, Pavel Piminov, A. E. Blinov, G.M. Tumaikin, V.K. Sandyrev, G.V. Karpov, A.I. Vorobiov, S.I. Eidelman, E. A. Kravchenko, K.Yu. Kotov, D.N. Grigoriev, V. V. Petrov, I. A. Kuyanov, M.Yu. Barnyakov, Alexey Maslennikov, V.G. Prisekin, Olga Rezanova, A. Bobrov, D.A. Maksimov, and Sergey Karnaev
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Physics::Accelerator Physics, High Energy Physics::Experiment, Electron, Lepton
Abstract: The ratio of the electron and muon widths of the J / ψ meson has been measured using direct J / ψ decays in the KEDR experiment at the VEPP-4M electron–positron collider. The result Γ e + e − ( J / ψ ) / Γ μ + μ − ( J / ψ ) = 1.0022 ± 0.0044 ± 0.0048 ( 0.65 % ) is in good agreement with the lepton universality. The experience collected during this analysis will be used for J / ψ lepton width determination with up to 1% accuracy.
Published: 2014

34. High-precision particle mass measurements using the KEDR detector at the VEPP-4M collider

Author: K. Yu. Todyshev, Yu. A. Tikhonov, Evgeny Levichev, and A.N. Skrinsky
Subjects: Physics, Elastic scattering, Spectrometer, Detector, Hadron, Compton scattering, General Physics and Astronomy, Particle identification, law.invention, Nuclear physics, law, Measuring instrument, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider
Abstract: A review is presented of experiments performed using the KEDR detector at the VEPP-4M accelerator complex for the precise measurement of particle masses. The resonant depolarization method, proposed in 1975 at the G I Budker Institute of Nuclear Physics of the RAS Siberian Branch for measuring beam energy, has undergone further development in the experiments described; an unprecedented accuracy of has been achieved. Application of this method together with measurement of the Compton backscattering energy allowed a series of experiments to be carried out which have provided the world's most accurate mass values for the , , , and mesons for the -lepton.
Published: 2014

35. The Super C-τ Factory particle identification system options

Author: V.S. Vorobiev, M.Yu. Barnyakov, I.V. Ovtin, N.A. Podgornov, A.F. Danilyuk, A.V. Bykov, K. Yu Todyshev, V.S Boborovnikov, A. R. Buzykaev, A. Yu. Barnyakov, I.M. Plekhov, A. P. Onuchin, I. A. Kuyanov, S.A. Kononov, A.A. Katcin, D.V. Korda, E. A. Kravchenko, and G.P. Razuvaev
Subjects: Physics, Photomultiplier, Range (particle radiation), Luminosity (scattering theory), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, QC1-999, Detector, 01 natural sciences, Particle identification, law.invention, Nuclear physics, law, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Center of mass, 010306 general physics, Collider, Cherenkov radiation
Abstract: The Super C-τ (SCT) Factory at Novosibirsk is a project of new colliding beam experiment proposed in Budker Institute of Nuclear Physics. Electron-positron collider based on Crab-Waist technique for operation energy range 2–5 GeV in center of mass is suggested. The luminosity up to 1035cm−1s−1 (in 100 times higher than in operated today experiments in this energy region) is expected. To perform broad experimental program of the project successfully the excellent particle identification (PID) system is needed. A number of options are under consideration. Three of them are described in the paper: Focusing Aerogel RICH (FARICH) detector, threshold Cherenkov counters based on ASHIPH (Aerogel SHifter PHotomultiplier) technique with 6000 litres of aerogel of two refractive indexes and time-of-flight counters with TOP (Time of Propagation) approach with time resolution better than 30 ps. Comparison of PID capabilities with help of parametric simulation is given.
Published: 2019

36. Time-integrated luminosity recorded by the BABARdetector at the PEP-IIe+e- collider

Author: M. J. Lewczuk, E. A. Kravchenko, T. Lueck, Gabriele Simi, C. L. Davis, Crisostomo Sciacca, D. Aston, R. Gamet, A. M. Eisner, J. L. Ritchie, R. Y. So, R. Andreassen, V. Prasad, G. Hamel de Monchenault, A. P. Wagner, Mauro Morandin, J. Ocariz, M. V. Purohit, Sw. Banerjee, J. Albert, M. A. Mazzoni, G. Wormser, M. Wittgen, G. Lynch, P. Patteri, Peter S. Kim, T. Schroeder, J. W. Gary, W. Dunwoodie, S. M. Spanier, E. Behn, Douglas Wright, M. L. Kocian, B. Bhuyan, R. Cheaib, L. Piemontese, R. F. Schwitters, Marcello Rotondo, M. Sigamani, B. G. Fulsom, Jose F Benitez, I. M. Peruzzi, A. Stocchi, Bruce Schumm, James R. Wilson, E. Prencipe, X. Nguyen, Andrei Gritsan, Claudio Campagnari, E. Gabathuler, W. R. Innes, F. C. Porter, J. M. LoSecco, O. Hamon, A. Roodman, L. M. Cremaldi, Simon Akar, S. Zambito, G. Onorato, A. Cervelli, William T. Ford, H. Briand, R. Godang, V. E. Blinov, D. J. Asgeirsson, B. C. Wray, N. B. Sinev, P. Ongmongkolkul, A. N. Yushkov, A. M. Ruland, F. Forti, H. L. Lynch, M. Verderi, Heiko Lacker, D. Su, H. A. Neal, T. Pulliam, Roland Waldi, F. Ferroni, S. I. Serednyakov, F. Bianchi, D. Monorchio, C. Voß, A. E. Rubin, E. Guido, Enrico Robutti, M. Piccolo, G. Raven, E. Grauges, J. P. Burke, A. Oyanguren, J. R. Fry, G. R. Bonneaud, U. Mallik, Dmytro Kovalskyi, G. J. King, J. J. Walsh, D. R. Peimer, G. Batignani, Sridhara Dasu, C. H. Cheng, P. D. Dauncey, A. G. Denig, J. E. Brau, M. K. Sullivan, M. D. Sokoloff, A. J. Martinez, J. P. Lees, S. Sitt, P. J. Clark, T. S. Miyashita, P. R. Burchat, Nicola Neri, M. Mandelkern, D. W. G. S. Leith, M. Gaspero, A. M. Lutz, R. Calabrese, C. Touramanis, A. Adametz, Paul Fraser Harrison, R. de Sangro, E. Ben-Haim, D. M. Strom, R. Cenci, G. Cibinetto, Hossain Ahmed, Chunhui Chen, W. J. Wisniewski, R. Stroili, G. M. Vitug, T. Hartmann, A. R. Buzykaev, O. Grünberg, M. Carpinelli, P. M. Patel, P. Lewis, G. Eigen, M. R. Monge, P. C. Bloom, Yu. G. Kolomensky, C. Dallapiccola, A. Zallo, D. Lindemann, B. Echenard, D. Bernard, B. Spaan, Stephen Robert Wagner, W. H. Toki, T. Leddig, G. Calderini, D. H. Wright, Thomas Latham, H. R. Band, D. Dujmic, C. Patrignani, Z. C. Huard, K. R. Schubert, Elisa Manoni, W. S. Lockman, M. Fritsch, S. Playfer, J. Chauveau, P. Taras, E. P. Solodov, V. Tisserand, R. Gorodeisky, M. Simard, D. A. Roberts, S. Passaggio, A. A. Salnikov, A. Calcaterra, Eleonora Luppi, M. R. Convery, W. Gradl, W. Park, A. Perez, L. Lanceri, M. T. Graham, D. Bettoni, Alberto Lusiani, I. Garzia, Christopher West, G. Grosdidier, C. Angelini, J. P. Coleman, Yu I. Skovpen, Sau Lan Wu, Marco Bomben, A. Hafner, G. De Nardo, K. Yu Todyshev, M. H. Schune, G. Sciolla, F. Anulli, B. Hamilton, M. Ebert, Colin Jessop, A. Palano, U. Uwer, Biplab Dey, R. C. Field, T. S. Mattison, Alessandro Gaz, G. Finocchiaro, V. Luth, E. M. T. Puccio, P. Biassoni, G. Casarosa, M. L. Perl, Fergus Wilson, R. Prepost, V. Santoro, C. Hast, D. J. Lange, G. Piredda, F. Simonetto, P. Sonnek, R. H. Schindler, Matteo Rama, Abner Soffer, S. H. Robertson, Joseph Izen, M. Morii, Stephen Sekula, Ch Yèche, S. Prell, T. J. Gershon, Herbert Koch, E. O. Olaiya, V. B. Golubev, B. Lindquist, M. S. Alam, James H Cochran, David Hutchcroft, A. Snyder, V. Poireau, Marcello Giorgi, S. Luitz, X. C. Lou, Florian Urs Bernlochner, D. Lopes Pegna, A. Khan, V. P. Druzhinin, C. Bozzi, K. Griessinger, I. M. Nugent, N. Gagliardi, D. B. MacFarlane, F. Palombo, H. W. Wulsin, D. S. Chao, D. N. Brown, Weitao Wang, J. Dorfan, Brian Meadows, C. Bünger, R. Frey, M. Davier, M. H. Kelsey, R. Baldini-Ferroli, D. Kirkby, J. A. McKenna, B. Oberhof, T. M. Hong, G. Vasseur, K. T. Flood, V. Ziegler, K. Honscheid, James D. Olsen, R. Kroeger, R. Sacco, A. Jawahery, B. N. Ratcliff, G. Rizzo, E. Feltresi, A. P. Onuchin, M. Posocco, R. Contri, L. T. Kerth, Alessandro Rossi, R. Schwierz, C. Hearty, Ph Leruste, A. J.S. Smith, N. Arnaud, M. Lo Vetere, D. J. Summers, W. T. Meyer, R. J. Sobie, L. Vitale, F. Martinez-Vidal, Dominik Müller, N. Tasneem, S. Pacetti, R. Cowan, S. Bettarini, M. Bellis, Aidan Randle-Conde, George Lafferty, R. Faccini, M. Franco Sevilla, G. P. Dubois-Felsmann, R. Ayad, Y. B. Pan, R. Kowalewski, A. Y. Rakitin, S. Nelson, Denis Derkach, Maurizio Biasini, B. Malaescu, Owen Rosser Long, A. Seiden, J. A. Ernst, L. Sun, Adrian John Bevan, F. Ferrarotto, A. J. Lankford, F. Le Diberder, E. Torrence, J. D. Richman, Pablo Villanueva-Perez, D. J. Bard, D. G. Hitlin, G. A. Cowan, J. Va’vra, D. Gamba, Eugenio Paoloni, N. Guttman, B. Stugu, G. Marchiori, Roger Barlow, Martino Margoni, R. M. White, C. Cartaro, L. Li Gioi, P. Roudeau, A. M. Gabareen, Tim Adye, R. D. Kass, E. Fioravanti, H. H. F. Choi, S. Emery, Maurizio Martinelli, J. M. Roney, J. G. Smith, F. Di Lodovico, D. J. Payne, and U. Nauenberg
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, 010308 nuclear & particles physics, Electron–positron annihilation, Detector, BaBar experiment, Resonance, 01 natural sciences, Nuclear physics, 0103 physical sciences, 010306 general physics, Instrumentation
Abstract: We describe a measurement of the time-integrated luminosity of the data collected by the BABAR experiment at the PEP-II asymmetric-energy e^+e^- collider at the ϒ(4S), ϒ(3S), and ϒ(2S) resonances and in a continuum region below each resonance. We measure the time-integrated luminosity by counting e^+e^-→e^+e^- and (for the ϒ(4S) only) e^+e^-→μ^+μ^- candidate events, allowing additional photons in the final state. We use data-corrected simulation to determine the cross-sections and reconstruction efficiencies for these processes, as well as the major backgrounds. Due to the large cross-sections of e^+e^-→e^+e^- and e^+e^-→μ^+μ^-, the statistical uncertainties of the measurement are substantially smaller than the systematic uncertainties. The dominant systematic uncertainties are due to observed differences between data and simulation, as well as uncertainties on the cross-sections. For data collected on the ϒ(3S) and ϒ(2S) resonances, an additional uncertainty arises due to ϒ→e^+e^-X background. For data collected off the ϒ resonances, we estimate an additional uncertainty due to time dependent efficiency variations, which can affect the short off-resonance runs. The relative uncertainties on the luminosities of the on-resonance (off-resonance) samples are 0.43% (0.43%) for the ϒ(4S), 0.58% (0.72%) for the ϒ(3S), and 0.68% (0.88%) for the ϒ(2S).
Published: 2013

37. The KEDR detector

Author: E. B. Levichev, I. V. Bedny, A. A. Osipov, A. M. Sukharev, E. M. Baldin, Yu. I. Skovpen, V. V. Smalyuk, A. R. Buzykaev, V. V. Anashin, V. M. Aulchenko, E. A. Kravchenko, Yu. A. Tikhonov, I. B. Nikolaev, S. G. Pivovarov, N. Yu. Muchnoi, S. V. Karpov, A. E. Blinov, M. Yu. Barnyakov, V. N. Kudryavtsev, A. E. Bondar, V. M. Malyshev, V. V. Gulevich, A. A. Ruban, S. V. Peleganchuk, T. A. Kharlamova, A. I. Shusharo, I. O. Orlov, O. L. Beloborodova, A. G. Shamov, A. K. Barladyan, V. N. Zhilich, V. S. Bobrovnikov, V. F. Kulikov, A. I. Vorobiov, A. N. Skrinsky, A. L. Maslennikov, A. A. Talyshev, A. S. Medvedko, A. P. Onuchin, E. A. Kuper, G. A. Savinov, G. E. Pospelov, A. N. Yushkov, B.A. Shwartz, S.A. Nikitin, V. A. Tayursky, L. V. Dneprovsky, I.Yu. Basok, Y. Usov, A. V. Bobrov, Andrey Sokolov, R. G. Snopkov, V. A. Rodyakin, S. E. Baru, S.A. Kononov, L. I. Shekhtman, G. V. Karpov, A. S. Kuzmin, S. B. Oreshkin, Valery I. Telnov, V. G. Prisekin, V. V. Zhulanov, V. E. Blinov, K. Yu. Kotov, D. A. Maksimov, A.Yu. Barnyakov, K. Yu Todyshev, and Anton Poluektov
Subjects: Physics, Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, Detector, Large series, Magnetic detector, Compton backscattering, Laser, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider, Beam energy
Abstract: The KEDR detector is a universal magnetic detector designed for studying the c- and b-quarks and two-photon physics, and is employed at the VEPP-4M e + e − collider. A specific feature of the experiment is the measurement of absolute beam energy using two methods: the resonant depolarization and the faster but less precise Compton backscattering of laser photons. This allowed a large series of measurements to be performed, in which the accuracy of determination of such fundamental parameters of particles as mass and total and leptonic widths was improved.
Published: 2013

38. Measurement of the B0→D*−π+π−π+ branching fraction

Author: Colin Jessop, R. Prepost, N. Tasneem, G. Vasseur, K. T. Flood, J. Ocariz, Debbie Payne, S. H. Robertson, J. Chauveau, F. De Mori, F. Forti, J. W. Gary, J. Dorfan, S. Emery, Herbert Koch, B. Bhuyan, S. Bettarini, B. G. Fulsom, Aidan Randle-Conde, George Lafferty, R. Cheaib, M. K. Sullivan, Maurizio Biasini, G. R. Bonneaud, K. Griessinger, Yu. I. Skovpen, Brian Meadows, G. De Nardo, A. M. Eisner, J. M. LoSecco, M. Röhrken, R. Cenci, A. Zallo, Gabriele Simi, Z. C. Huard, Sw. Banerjee, C. L. Davis, Owen Rosser Long, Andrei Gritsan, J. L. Ritchie, F. Anulli, Abner Soffer, Alessandro Gaz, F. Di Lodovico, Denis Bernard, Miriam Heß, T. S. Mattison, J. A. Ernst, S. I. Serednyakov, Douglas Wright, U. Mallik, M. Fritsch, C. Hast, I. M. Peruzzi, A. P. Onuchin, L. Sun, A. Filippi, D. J. Lange, G. Piredda, M. Verderi, W. Gradl, Peter S. Kim, Eleonora Luppi, W. Panduro Vazquez, S. Martellotti, G. J. King, M. Carpinelli, L. Lanceri, M. V. Purohit, J. A. McKenna, F. Bianchi, R. Y. So, Adrian John Bevan, F. Simonetto, S. Dittrich, Simon Akar, F. Betti, R. Cowan, E. Paoloni, D. W. G. S. Leith, J. Albert, R. C. Field, K. R. Schubert, Nicolas Arnaud, A. M. Lutz, Tim Adye, R. D. Kass, G. Finocchiaro, V. Luth, Alessandro Pilloni, B. Echenard, G. Calderini, D. R. Peimer, A. Oyanguren, M. Piccolo, E. Gabathuler, F. Le Diberder, Fernando Palombo, M. S. Alam, Stephen Sekula, W. R. Innes, Timothy Gershon, F. C. Porter, J. M. Roney, G. Raven, I. M. Nugent, Alberto Lusiani, G. Batignani, Biplab Dey, C. Touramanis, C. H. Chen, S. M. Spanier, E. Grauges, Fergus Wilson, D. S. Chao, Vladimir Blinov, P. R. Burchat, C. Bozzi, S. Luitz, J. R. Smith, J. M. Izen, K. Honscheid, B. Oberhof, Mario Giorgi, J. J. Walsh, M. Davier, G. Rizzo, Florian Urs Bernlochner, T. Lueck, R. Calabrese, E. Ben-Haim, K. Yu. Todyshev, Michael Sokoloff, Elisa Manoni, M. Posocco, T. Leddig, B. G. Pushpawela, R. Sacco, B. N. Ratcliff, X. C. Lou, W. S. Lockman, C. H. Cheng, H. A. Neal, Roger Barlow, D. Bettoni, Martino Margoni, R. Kowalewski, M. Ebert, C. Hearty, M. T. Graham, R. de Sangro, S. L. Wu, M. R. Convery, A. M. Rossi, A. Calcaterra, A. J.S. Smith, R. Gorodeisky, D. J. Summers, A. Roodman, D. A. Roberts, I. Garzia, A. R. Buzykaev, Thomas Latham, E. Fioravanti, C. Patrignani, V. Tisserand, M. Bomben, A. Beaulieu, A. Hafner, L. Vitale, Roland Waldi, V. Santoro, F. Ferroni, E. M. T. Puccio, F. Martinez-Vidal, Dominik Müller, Paul Fraser Harrison, H. Ahmed, D. B. MacFarlane, R. Godang, Stephen Robert Wagner, D. N. Brown, A. G. Denig, Yu. G. Kolomensky, Matteo Rama, S. Prell, James H Cochran, V. Poireau, Marcello Rotondo, V. P. Druzhinin, L. M. Cremaldi, D. G. Hitlin, P. Taras, Nicola Neri, J. P. Coleman, Giulia Casarosa, G. Wormser, R. F. Schwitters, T. Schroeder, O. Grünberg, W. Dunwoodie, Jean-Pierre Lees, Christian Voß, E. A. Kravchenko, Crisostomo Sciacca, D. Aston, James R. Wilson, G. Eigen, P. Ongmongkolkul, R. Stroili, Marcin Chrzaszcz, E. P. Solodov, T. S. Miyashita, M. Bellis, C. Bünger, J. Kim, A. Jawahery, G. Cibinetto, W. J. Wisniewski, S. Passaggio, V. B. Golubev, A. Palano, David Hutchcroft, P. Patteri, C. Cartaro, R. Faccini, F. Ferrarotto, A. J. Lankford, G. A. Cowan, J. Va’vra, D. Gamba, N. Guttman, and G. Marchiori
Subjects: Nuclear physics, Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, 0103 physical sciences, 010306 general physics, 01 natural sciences, Lepton, Universality (dynamical systems)
Abstract: Using a sample of (470.9 +- 2.8) x 10^6 BB-bar pairs, we measure the decay branching fraction B(B^0 -> D^*- pi^+ pi^- pi^+) = (7.26 +- 0.11 +- 0.31) x 10^-3, where the first uncertainty is statistical and the second is systematic. Our measurement will be helpful in studies of lepton universality by measuring B(B^0 -> D^*- tau^+ nu_tau) using tau^+ -> pi^+ pi^- pi^+ nu-bar_tau decays, normalized to B(B^0 -> D^*- pi^+ pi^- pi^+.
Published: 2016

39. Analysis of BaBar, Belle, BES-II, CLEO and KEDR data on $\psi(3770)$ line shape and determination of the resonance parameters

Author: K. Yu. Todyshev and A.G. Shamov
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Hadron, High Energy Physics::Phenomenology, Theoretical models, Electron, 01 natural sciences, Resonance (particle physics), lcsh:QC1-999, Nuclear physics, Cross section (physics), High Energy Physics - Phenomenology, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, lcsh:Physics, Line (formation)
Abstract: The available data on the D D ‾ and inclusive hadronic cross sections in the ψ ( 3770 ) region from the BaBar, Belle, BES-II, CLEO and KEDR experiments have been analyzed assuming that systematic uncertainties on cross sections measured by various detectors are not correlated. Four theoretical models predicting the ψ ( 3770 ) line shape were considered for the D D ‾ channel. All of them gave satisfactory description of the data. The combined analysis of the D D ‾ and inclusive hadronic channels was performed using the model based on the vector dominance approach and accounting for the contribution of the ψ ( 2 S ) tail to the D D ‾ cross section. The following values of the mass, total width, electron width and decay probability to the non- D D ‾ states were obtained: M ( MeV ) Γ ( MeV ) Γ e e ( eV ) B n D D ‾ 3779.8 ± 0.6 25.8 ± 1.3 196 ± 18 0.164 ± 0.049 where the errors quoted include both statistical and dominant systematic uncertainties.
Published: 2016

40. Tests ofCPTsymmetry inB0−B¯0mixing and inB0→cc¯K0decays

Author: C. Hearty, A. Roodman, D. J. Summers, R. Cenci, A. G. Denig, A. Zallo, E. Fioravanti, L. Vitale, Roland Waldi, F. Martinez-Vidal, Dominik Müller, A. M. Eisner, F. Ferroni, Tim Adye, R. D. Kass, M. Fritsch, H. Ahmed, Paul Fraser Harrison, Eleonora Luppi, M. V. Purohit, L. M. Cremaldi, F. Di Lodovico, Stephen Robert Wagner, J. Albert, W. Gradl, S. H. Robertson, J. Ocariz, D. J. Payne, R. Godang, F. Simonetto, L. Lanceri, Herbert Koch, J. Dorfan, B. Echenard, K. Griessinger, Peter S. Kim, D. Bernard, F. Forti, F. De Mori, D. G. Hitlin, E. Gabathuler, Abner Soffer, Gabriele Simi, B. N. Ratcliff, Florian Urs Bernlochner, F. Palombo, T. Lueck, W. R. Innes, F. C. Porter, C. L. Davis, Maurizio Biasini, T. S. Mattison, J. L. Ritchie, E. Ben-Haim, S. Luitz, S. I. Serednyakov, R. Stroili, P. Taras, Z. C. Huard, V. E. Blinov, M. Rotondo, N. Arnaud, M. Bomben, Nicola Neri, G. R. Bonneaud, C. Hast, D. J. Lange, G. Piredda, X. C. Lou, J. M. Roney, Owen Rosser Long, G. De Nardo, B. G. Pushpawela, P. Ongmongkolkul, W. Panduro Vazquez, J. P. Coleman, A. Filippi, F. Anulli, Giulia Casarosa, M. Ebert, K. R. Schubert, C. H. Cheng, J. A. Ernst, Roger Barlow, Martino Margoni, Alessandro Gaz, J. G. Smith, R. Y. So, M. Röhrken, G. J. King, T. J. Gershon, G. Wormser, G. Rizzo, M. Rama, J. Va’vra, R. de Sangro, S. L. Wu, A. M. Rossi, M. Chrzaszcz, C. Voß, J. A. McKenna, G. Calderini, R. Cowan, Joseph Izen, S. Bettarini, T. Schroeder, James R. Wilson, A. P. Onuchin, L. Sun, R. C. Field, Elisa Manoni, Adrian John Bevan, N. Tasneem, M. Heß, Alessandro Pilloni, Yu. I. Skovpen, S. Martellotti, E. Paoloni, I. M. Peruzzi, W. Dunwoodie, G. Finocchiaro, D. Gamba, V. Luth, D. R. Peimer, M. Verderi, Aidan Randle-Conde, M. S. Alam, E. A. Kravchenko, Andrei Gritsan, G. Eigen, Crisostomo Sciacca, D. Aston, J. J. Walsh, M. T. Graham, J. P. Lees, F. F. Wilson, F. Bianchi, I. M. Nugent, D. N. Brown, S. Dittrich, Sw. Banerjee, Roberto Calabrese, U. Mallik, S. Prell, Stephen Sekula, S. Emery, N. Guttman, M. Piccolo, E. P. Solodov, T. E. Latham, M. Carpinelli, B. Oberhof, James H Cochran, V. Poireau, T. S. Miyashita, D. S. Chao, C. Bozzi, G. D. Lafferty, K. Honscheid, G. Marchiori, G. Batignani, A. Oyanguren, R. Kowalewski, M. Davier, J. W. Gary, K. Yu. Todyshev, M. Posocco, D. W. G. S. Leith, V. Santoro, S. Akar, C. Touramanis, H. A. Neal, R. Cheaib, J. Chauveau, O. Grünberg, A. Lusiani, V. P. Druzhinin, Yu G. Kolomensky, T. Leddig, D. Bettoni, W. S. Lockman, A. R. Buzykaev, J. M. LoSecco, A. Beaulieu, C. Cartaro, B. Dey, M. Bellis, M. R. Convery, I. Garzia, R. F. Schwitters, C. Patrignani, V. Tisserand, C. H. Chen, S. M. Spanier, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, Douglas Wright, G. A. Cowan, V. B. Golubev, A. Palano, A. Calcaterra, David Hutchcroft, P. Patteri, A. M. Lutz, W. J. Wisniewski, S. Passaggio, C. Bünger, J. Kim, A. Jawahery, G. Cibinetto, R. Gorodeisky, D. A. Roberts, A. Hafner, E. M. T. Puccio, D. B. MacFarlane, B. T. Meadows, G. Raven, M. D. Sokoloff, E. Grauges, Mario Giorgi, P. R. Burchat, Colin Jessop, R. Prepost, G. Vasseur, R. Sacco, K. T. Flood, A. J.S. Smith, B. Bhuyan, B. G. Fulsom, and M. K. Sullivan
Subjects: Physics, 010308 nuclear & particles physics, CPT symmetry, Electron–positron annihilation, 0103 physical sciences, Analytical chemistry, BaBar experiment, 010306 general physics, 01 natural sciences, Mixing (physics), Bar (unit)
Abstract: Using the eight time dependences for the decays Upsilon(4S)-> B0 B0bar -> fj fk with the dacay into a flavor-specific state fj = ell+- X before or after the decay into a CP eigenstate fk = c cbar KS,KL, as measured by the BABAR experiment, we determine the three CPT-sensitive parameters Re(z) and Im(z) in B0-B0bar mixing and |Abar/A| in B0 -> c cbar K0 decays. We find Im(z) = 0.010 +- 0.030 +- 0.013, Re(z) = -0.065 +- 0.028 +- 0.014, and |Abar/A| = 0.999 +- 0.023 +- 0.017, in agreement with CPT symmetry.
Published: 2016

41. Measurement of the neutralDmeson mixing parameters in a time-dependent amplitude analysis of theD0→π+π−π0decay

Author: J. A. McKenna, E. Paoloni, J. L. Ritchie, S. I. Serednyakov, M. Rotondo, Elisa Manoni, G. De Nardo, R. Y. So, Debbie Payne, M. Röhrken, B. N. Ratcliff, C. Bünger, Alessandro Pilloni, Giulia Casarosa, G. Wormser, D. E. Hutchcroft, M. T. Graham, J. Kim, R. Sacco, D. R. Peimer, T. Leddig, A. Jawahery, Andrei Gritsan, G. Cibinetto, E. Gabathuler, T. Schroeder, W. R. Innes, Florian Urs Bernlochner, R. F. Schwitters, F. C. Porter, F. Palombo, T. Lueck, A. G. Denig, A. J.S. Smith, W. Dunwoodie, F. Simonetto, W. S. Lockman, A. M. Eisner, Yu. I. Skovpen, G. R. Bonneaud, M. Chrzaszcz, E. Ben-Haim, C. Voß, Yu. G. Kolomensky, A. Oyanguren, M. Piccolo, G. Batignani, M. R. Convery, S. Akar, X. C. Lou, C. Touramanis, Douglas Wright, S. Emery, O. Grünberg, M. V. Purohit, F. Forti, G. Marchiori, J. Albert, T. S. Mattison, B. T. Meadows, Sw. Banerjee, G. Raven, R. Faccini, F. Ferrarotto, A. J. Lankford, M. Bomben, M. D. Sokoloff, S. Luitz, P. R. Burchat, C. Hast, D. J. Lange, R. Cenci, G. Piredda, W. Panduro Vazquez, F. Le Diberder, B. Bhuyan, Roger Barlow, Martino Margoni, R. C. Field, B. G. Fulsom, Gabriele Simi, R. Gorodeisky, G. Finocchiaro, V. Luth, A. Zallo, T. J. Gershon, C. L. Davis, D. W. G. S. Leith, D. A. Roberts, M. S. Alam, I. M. Peruzzi, F. F. Wilson, A. Calcaterra, B. G. Pushpawela, A. Hafner, F. Bianchi, B. Oberhof, E. M. T. Puccio, S. Prell, S. Dittrich, M. K. Sullivan, K. Yu. Todyshev, M. Fritsch, P. Ongmongkolkul, James H Cochran, V. Poireau, M. Heß, D. B. MacFarlane, Eleonora Luppi, A. Lusiani, V. P. Druzhinin, Z. C. Huard, J. Dorfan, E. A. Kravchenko, S. Bettarini, George Lafferty, N. Arnaud, Crisostomo Sciacca, D. Aston, G. A. Cowan, E. Grauges, D. Bettoni, F. Anulli, Mario Giorgi, P. Taras, Alessandro Gaz, C. H. Cheng, C. Hearty, S. H. Robertson, I. Garzia, R. de Sangro, S. L. Wu, C. Patrignani, V. Tisserand, Colin Jessop, D. J. Summers, Herbert Koch, R. Prepost, T. E. Latham, L. M. Cremaldi, M. Carpinelli, K. Griessinger, L. Vitale, F. Martinez-Vidal, Dominik Müller, D. G. Hitlin, H. Ahmed, J. Chauveau, W. Gradl, L. Lanceri, J. Va’vra, V. B. Golubev, G. Vasseur, K. T. Flood, A. Palano, D. Gamba, Peter S. Kim, N. Guttman, P. Patteri, A. M. Lutz, W. J. Wisniewski, S. Passaggio, N. Tasneem, J. M. Roney, Aidan Randle-Conde, V. E. Blinov, J. G. Smith, B. Echenard, D. Bernard, G. Rizzo, M. Rama, C. Cartaro, J. P. Lees, M. Verderi, F. Di Lodovico, J. Ocariz, R. Godang, U. Mallik, N. Neri, C. H. Chen, S. M. Spanier, V. Santoro, J. J. Walsh, D. N. Brown, F. De Mori, James R. Wilson, K. R. Schubert, H. A. Neal, G. Calderini, G. Eigen, A. R. Buzykaev, A. Beaulieu, Tim Adye, R. D. Kass, Roberto Calabrese, Maurizio Biasini, J. W. Gary, Owen Rosser Long, R. Cheaib, E. P. Solodov, T. S. Miyashita, J. A. Ernst, A. P. Onuchin, L. Sun, J. M. LoSecco, Adrian John Bevan, B. Dey, R. Kowalewski, M. Ebert, G. J. King, A. M. Rossi, M. Bellis, Joseph Izen, J. P. Coleman, Stephen Sekula, C. Bozzi, K. Honscheid, R. Stroili, M. Posocco, A. Filippi, R. Cowan, A. Roodman, E. Fioravanti, Roland Waldi, F. Ferroni, Paul Fraser Harrison, Stephen Robert Wagner, S. Martellotti, I. M. Nugent, D. S. Chao, M. Davier, and Abner Soffer
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Resonance, Charge (physics), 7. Clean energy, 01 natural sciences, Nuclear physics, Amplitude, Pion, 0103 physical sciences, D meson, High Energy Physics::Experiment, Production (computer science), 010306 general physics
Abstract: We measure the $D^0 - {\bar{D}}^0$ mixing parameters using a time-dependent amplitude analysis of the decay $D^0\to\pi^+\pi^-\pi^0$. The data were recorded with the BABAR detector at center-of-mass energies at and near the $\Upsilon(4S)$ resonance, and correspond to an integrated luminosity of approximately 468.1 ${\rm fb}^{-1}$. The neutral $D$ meson candidates are selected from $D^{*}(2010)^+\to D^0 \pi_s^+$ decays where the flavor at the production is identified by the charge of the low momentum pion, $\pi_s^+$. The measured mixing parameters are $x = (1.5\pm1.2\pm0.6) \%$ and $y = (0.2\pm0.9\pm0.5) \%$, where the quoted uncertainties are statistical and systematic, respectively.
Published: 2016

42. Time-dependent analysis ofB0→KS0π−π+γdecays and studies of theK+π−π+system inB+→K+π−π+γdecays

Author: Giulia Casarosa, Colin Jessop, G. Wormser, R. Prepost, Abner Soffer, R. Faccini, T. Schroeder, G. Lynch, F. Ferrarotto, A. J. Lankford, F. Le Diberder, J. D. Richman, V. B. Golubev, J. L. Ritchie, G. Vasseur, K. T. Flood, D. Su, Maria Roberta Monge, S. I. Serednyakov, A. Palano, M. Piccolo, J. A. McKenna, V. Luth, R. Y. So, S. H. Robertson, Gabriele Simi, G. A. Cowan, V. Prasad, Roberto Calabrese, G. Batignani, R. Andreassen, C. L. Davis, Marcello Rotondo, Herbert Koch, A. G. Denig, B. N. Ratcliff, A. Stocchi, W. R. Innes, D. B. Macfarlane, L. M. Cremaldi, R. Cenci, A. Zallo, F. Forti, Sw. Banerjee, W. Dunwoodie, Stefan Spanier, F. Di Lodovico, J. Ocariz, E. Ben-Haim, M. Fritsch, B. Spaan, J. W. Gary, F. De Mori, C. Cartaro, K. Griessinger, P. Patteri, D. J. Payne, R. Godang, D. G. Hitlin, Eleonora Luppi, U. Uwer, R. Cheaib, R. Stroili, W. Gradl, P. Del Amo Sanchez, Brian Meadows, L. Lanceri, W. J. Wisniewski, M. J. Lee, V. E. Blinov, Nicola Neri, Elisa Manoni, Heiko Lacker, Yu. G. Kolomensky, J. M. LoSecco, Alessandro Pilloni, C. Hearty, P. C. Kim, M. Verderi, E. P. Solodov, T. S. Miyashita, B. Dey, Bogdan Malaescu, G. Rizzo, D. J. Summers, B. Hamilton, M. Ebert, A. Rossi, S. Playfer, R. H. Schindler, P. Roudeau, E. Grauges, Bruce Schumm, G. De Nardo, U. Mallik, Z. C. Huard, Joseph Izen, G. J. King, A. M. Lutz, M. K. Sullivan, M. Röhrken, J. J. Walsh, Sridhara Dasu, E. Gabathuler, F. C. Porter, Dmytro Kovalskyi, Corrado Angelini, A. Roodman, J. P. Lees, R. J. Sobie, Stephen Sekula, J. Dorfan, J. M. Roney, A. Calcaterra, L. Vitale, F. Martinez-Vidal, E. O. Olaiya, Florian Urs Bernlochner, E. Fioravanti, S. Luitz, K. R. Schubert, D. Lopes Pegna, D. R. Peimer, D. Gamba, Roland Waldi, F. Ferroni, Dominik Müller, J. G. Smith, T. Pulliam, S. Passaggio, M. Bellis, T. Lueck, M. Chrzaszcz, James D. Olsen, C. Voß, A. Khan, C. Bozzi, C. Bünger, Paul Fraser Harrison, Marco Bomben, J. Chauveau, Mauro Morandin, Andrei Gritsan, V. Santoro, N. Guttman, F. Palombo, F. Anulli, R. C. Field, H. Ahmed, B. Stugu, K. Honscheid, J. Kim, C. Hast, L. T. Kerth, Douglas Wright, A. Oyanguren, Stephen Robert Wagner, A. Jawahery, C. H. Chen, R. Ayad, N. Tasneem, G. Marchiori, G. Cibinetto, P. Ongmongkolkul, James R. Wilson, D. Aston, S. Martellotti, H. Briand, D. E. Hutchcroft, C. Touramanis, T. Leddig, Aidan Randle-Conde, M. Franco Sevilla, B. Bhuyan, H. R. Band, W. S. Lockman, Yu. I. Skovpen, B. G. Fulsom, M. Posocco, M. Carpinelli, D. N. Brown, M. R. Convery, G. Eigen, P. M. Patel, O. Grünberg, Christopher West, G. R. Bonneaud, H. Neal, H. H. F. Choi, S. Emery, M. J. Lewczuk, F. Simonetto, D. W G S Leith, A. R. Buzykaev, E. A. Kravchenko, G. Calderini, A. Beaulieu, T. S. Mattison, Crisostomo Sciacca, M. Hess, D. J. Lange, G. Piredda, A. Filippi, H. W. Wulsin, W. Panduro Vazquez, R. Cowan, A. Snyder, T. J. Gershon, A. M. Eisner, M. T. Graham, X. C. Lou, M. V. Purohit, Maurizio Biasini, J. Albert, R. F. Schwitters, Owen Rosser Long, A. Seiden, J. A. Ernst, J. R. Fry, C. H. Cheng, A. Adametz, R. de Sangro, S. L. Wu, A. P. Onuchin, W. H. Toki, L. Sun, W. T. Ford, Tim Adye, R. D. Kass, P. Taras, M. Gaspero, Adrian John Bevan, J. P. Coleman, Eugenio Paoloni, Matteo Rama, Simon Akar, G. Onorato, S. Prell, James H Cochran, V. Poireau, G. Raven, Marcello Giorgi, Y. B. Pan, M. D. Sokoloff, P. R. Burchat, D. J. Bard, V. P. Druzhinin, R. Kowalewski, Roger Barlow, Martino Margoni, R. Gorodeisky, T. M. Hong, M. Simard, D. A. Roberts, G. Grosdidier, A. Hafner, E. M. T. Puccio, Denis Derkach, R. Sacco, A. J.S. Smith, I. M. Nugent, D. S. Chao, M. Davier, S. Bettarini, George Lafferty, R. Contri, B. Echenard, D. Bernard, B. G. Pushpawela, D. Bettoni, Alberto Lusiani, G. Finocchiaro, M. S. Alam, Fergus Wilson, I. Garzia, Thomas Latham, C. Patrignani, V. Tisserand, G. P. Dubois-Felsmann, B. Oberhof, J. Va'Vra, I. M. Peruzzi, K. Yu. Todyshev, F. Bianchi, S. Dittrich, Ph Leruste, and N. Arnaud
Subjects: Physics, 010308 nuclear & particles physics, Radiative decay, 01 natural sciences, Nuclear physics, Research council, 0103 physical sciences, media_common.cataloged_instance, Christian ministry, Russian federation, European union, 010306 general physics, Humanities, media_common
Abstract: This work is supported by the U.S. Department of Energy and National Science Foundation, the Natural Sciences and Engineering Research Council (Canada), the Commissariat a l’Energie Atomique and Institut National de Physique Nucleaire et de Physique des Particules (France), the Bundesministerium fur Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica Nucleare (Italy), the Foundation for Fundamental Research on Matter (Netherlands), the Research Council of Norway, the Ministry of Education and Science of the Russian Federation, Ministerio de Ciencia e Innovacion (Spain), and the Science and Technology Facilities Council (United Kingdom). Individuals have received support from the Marie-Curie IEF program (European Union), the A. P. Sloan Foundation (USA) and the Binational Science Foundation (USA–Israel).
Published: 2016

43. Search for mixing-inducedCPviolation using partial reconstruction ofB¯0→D*+Xℓ−ν¯ℓand kaon tagging

Author: Alessandro Pilloni, D. R. Peimer, R. Ayad, James R. Wilson, H. Briand, A. Adametz, D. Aston, J. J. Walsh, R. H. Schindler, M. Hess, Abner Soffer, A. Roodman, A. Stocchi, A. M. Lutz, F. Simonetto, E. Fioravanti, Roland Waldi, Maria Roberta Monge, F. Ferroni, P. Taras, J. A. McKenna, G. Eigen, C. Cartaro, D. B. Macfarlane, E. Paoloni, D. N. Brown, A. Filippi, J. L. Ritchie, Paul Fraser Harrison, D. Su, S. Bettarini, S. Passaggio, V. E. Blinov, S. I. Serednyakov, V. B. Golubev, G. D. Lafferty, Y. B. Pan, R. Kowalewski, Ju-Young Kim, Stefan Spanier, M. Morandin, U. Uwer, M. Piccolo, R. Stroili, F. Forti, R. Cowan, Stephen Robert Wagner, L. Piemontese, P. Roudeau, M. Gaspero, J. P. Coleman, G. Batignani, R. Y. So, A. Palano, R. Andreassen, F. De Mori, E. Gabathuler, M. K. Sullivan, G. Rizzo, M. Rama, Elisa Manoni, M. T. Graham, S. Prell, A. Calcaterra, D. Gamba, M. J. Lee, Heiko Lacker, E. Ben-Haim, F. C. Porter, Denis Derkach, L. M. Cremaldi, W. T. Ford, W. R. Innes, E. P. Solodov, T. S. Miyashita, James H Cochran, V. Poireau, G. J. King, S. Playfer, B. Hamilton, M. Ebert, X. C. Lou, N. Guttman, Corrado Angelini, Tim Adye, Stephen Sekula, R. D. Kass, J. M. Roney, C. Hearty, B. Stugu, D. J. Bard, B. Spaan, S. Luitz, K. R. Schubert, A. M. Rossi, Joseph Izen, P. C. Kim, D. Lopes Pegna, G. Lynch, P. Patteri, A. Lusiani, G. Marchiori, W. Gradl, V. P. Druzhinin, M. Rotondo, C. H. Chen, S. Martellotti, Maurizio Biasini, D. J. Summers, M. Chrzaszcz, A. Khan, J. G. Smith, R. Contri, J. Chauveau, C. Voß, M. Carpinelli, C. Bozzi, J. Dorfan, L. Lanceri, B. Malaescu, C. Bünger, R. Faccini, F. Ferrarotto, A. J. Lankford, K. Honscheid, Owen Rosser Long, Yu. I. Skovpen, D. G. Hitlin, G. De Nardo, F. Le Diberder, R. J. Sobie, M. Bellis, T. M. Hong, I. M. Nugent, Dmytro Kovalskyi, J. D. Richman, A. Seiden, J. P. Lees, A. Jawahery, L. Vitale, M. Röhrken, F. Martinez-Vidal, G. Finocchiaro, Dominik Müller, Marco Bomben, G. Cibinetto, F. Di Lodovico, J. A. Ernst, Nicola Neri, M. Posocco, D. J. Payne, M. S. Alam, Sw. Banerjee, D. S. Chao, W. Dunwoodie, M. Davier, V. Luth, A. P. Onuchin, L. Sun, Giulia Casarosa, G. Wormser, Gabriele Simi, R. F. Schwitters, F. F. Wilson, V. Prasad, Roberto Calabrese, G. A. Cowan, M. Verderi, T. Pulliam, C. L. Davis, Adrian John Bevan, Bruce Schumm, B. Oberhof, J. Va'Vra, R. C. Field, H. Ahmed, B. Echenard, T. Schroeder, J. Ocariz, R. Godang, K. Yu. Todyshev, H. Neal, D. Bernard, V. Santoro, J. W. Gary, A. G. Denig, B. N. Ratcliff, D. W G S Leith, A. R. Buzykaev, A. Beaulieu, T. S. Mattison, R. Cheaib, D. Bettoni, W. J. Wisniewski, U. Mallik, J. M. LoSecco, Roger Barlow, Martino Margoni, D. J. Lange, G. Piredda, M. R. Convery, H. W. Wulsin, Andrei Gritsan, Christopher West, W. Panduro Vazquez, I. Garzia, C. Patrignani, V. Tisserand, G. P. Dubois-Felsmann, H. H. F. Choi, A. Snyder, T. J. Gershon, S. Emery, Colin Jessop, R. Prepost, A. Oyanguren, C. Touramanis, B. G. Pushpawela, O. Grünberg, D. E. Hutchcroft, G. Vasseur, K. T. Flood, T. Leddig, R. Cenci, A. Zallo, H. R. Band, W. S. Lockman, Yu. G. Kolomensky, M. Fritsch, Eleonora Luppi, Douglas Wright, E. Grauges, Mario Giorgi, Sridhara Dasu, R. Sacco, A. J.S. Smith, R. Gorodeisky, M. Simard, D. A. Roberts, G. Grosdidier, A. Hafner, E. M. T. Puccio, Simon Akar, G. Onorato, B. T. Meadows, G. Raven, M. D. Sokoloff, P. R. Burchat, Enrico Robutti, P. Ongmongkolkul, J. R. Fry, T. E. Latham, C. H. Cheng, M. J. Lewczuk, S. H. Robertson, R. de Sangro, S. L. Wu, E. A. Kravchenko, Herbert Koch, W. H. Toki, Crisostomo Sciacca, K. Griessinger, E. O. Olaiya, A. M. Eisner, Florian Urs Bernlochner, Z. C. Huard, F. Palombo, T. Lueck, James D. Olsen, F. Anulli, M. V. Purohit, C. Hast, Alessandro Gaz, B. Bhuyan, J. Albert, B. G. Fulsom, L. T. Kerth, P. M. Patel, G. R. Bonneaud, G. Calderini, N. Tasneem, Aidan Randle-Conde, M. Franco Sevilla, Ph Leruste, N. Arnaud, Biplab Dey, I. M. Peruzzi, F. Bianchi, and S. Dittrich
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, 01 natural sciences, Decay time, Research council, 0103 physical sciences, media_common.cataloged_instance, CP violation, Russian federation, Christian ministry, European union, 010306 general physics, Humanities, media_common
Abstract: This work is supported by the U.S. Department of Energy and National Science Foundation, the Natural Sciences and Engineering Research Council (Canada), the Commissariat a l’Energie Atomique and Institut National de Physique Nucleaire et de Physique des Particules (France), the Bundesministerium fur Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica Nucleare (Italy), the Foundation for Fundamental Research on Matter (The Netherlands), the Research Council of Norway, the Ministry of Education and Science of the Russian Federation, Ministerio de Economia y Competitividad (Spain), the Science and Technology Facilities Council (United Kingdom) and the Binational Science Foundation (U.S.-Israel). Individuals have received support from the Marie-Curie IEF program (European Union) and the A. P. Sloan Foundation (USA).
Published: 2016

44. Observation ofB¯→D(*) π+π−ℓ−ν¯Decays ine+e−Collisions at theΥ(4S)Resonance

Author: S. H. Robertson, H. Neal, Herbert Koch, R. H. Schindler, K. Griessinger, J. L. Ritchie, R. Faccini, F. Ferrarotto, A. J. Lankford, D. W G S Leith, A. R. Buzykaev, A. Beaulieu, A. Roodman, A. M. Lutz, F. Le Diberder, S. I. Serednyakov, J. R. Fry, C. H. Cheng, V. E. Blinov, Yu. I. Skovpen, C. H. Chen, G. Rizzo, M. Rama, Dmytro Kovalskyi, J. P. Lees, J. D. Richman, T. Pulliam, J. A. McKenna, V. Santoro, T. S. Mattison, S. Passaggio, R. de Sangro, S. L. Wu, E. Fioravanti, C. Bünger, R. Y. So, L. M. Cremaldi, S. Prell, M. Verderi, R. Godang, T. E. Latham, A. Jawahery, D. J. Lange, Roland Waldi, Douglas Wright, F. Ferroni, G. Piredda, H. W. Wulsin, W. Panduro Vazquez, U. Mallik, Z. C. Huard, R. Andreassen, W. H. Toki, James H Cochran, V. Poireau, G. Cibinetto, V. Luth, G. Lynch, Corrado Angelini, Stephen Sekula, F. De Mori, D. G. Hitlin, A. Snyder, N. Neri, G. A. Cowan, D. J. Bard, A. Lusiani, Abner Soffer, D. Lopes Pegna, Heiko Lacker, T. J. Gershon, V. Prasad, F. Anulli, V. P. Druzhinin, A. M. Eisner, M. R. Convery, R. Cenci, A. Khan, C. Bozzi, A. Zallo, Paul Fraser Harrison, Ju-Young Kim, Christopher West, Maurizio Biasini, D. E. Hutchcroft, T. Leddig, Roberto Calabrese, T. M. Hong, M. J. Lewczuk, K. Honscheid, H. R. Band, C. Hearty, N. Tasneem, W. S. Lockman, E. A. Kravchenko, Gabriele Simi, B. Bhuyan, S. Luitz, D. Gamba, B. G. Fulsom, Owen Rosser Long, A. Seiden, P. C. Kim, Elisa Manoni, K. R. Schubert, C. L. Davis, S. Playfer, D. J. Summers, Crisostomo Sciacca, M. V. Purohit, Roger Barlow, Martino Margoni, Stephen Robert Wagner, N. Guttman, J. A. Ernst, A. Adametz, M. Fritsch, Giulia Casarosa, M. Posocco, Maria Roberta Monge, J. Albert, G. Wormser, V. B. Golubev, R. J. Sobie, Eleonora Luppi, J. Ocariz, J. Chauveau, B. Stugu, L. Vitale, A. P. Onuchin, I. M. Peruzzi, L. Sun, M. Hess, F. Martinez-Vidal, Dominik Müller, E. Paoloni, T. Schroeder, Aidan Randle-Conde, Bruce Schumm, G. Marchiori, P. Taras, A. Filippi, Adrian John Bevan, A. Palano, Alessandro Pilloni, M. Franco Sevilla, R. C. Field, J. W. Gary, H. Ahmed, S. Martellotti, A. Calcaterra, M. Carpinelli, P. Ongmongkolkul, D. R. Peimer, M. Gaspero, R. Cowan, F. Simonetto, A. Stocchi, A. Oyanguren, D. Aston, R. Cheaib, F. Bianchi, B. Malaescu, C. Cartaro, J. P. Coleman, Andrei Gritsan, M. T. Graham, D. B. Macfarlane, Marco Bomben, W. R. Innes, W. J. Wisniewski, S. Dittrich, J. J. Walsh, R. F. Schwitters, F. Forti, C. Touramanis, W. T. Ford, D. Bettoni, A. G. Denig, B. N. Ratcliff, Tim Adye, J. M. LoSecco, I. M. Nugent, R. D. Kass, E. Grauges, X. C. Lou, O. Grünberg, D. N. Brown, B. Dey, P. Roudeau, Mario Giorgi, Y. B. Pan, P. Patteri, R. Kowalewski, G. J. King, Sridhara Dasu, Yu. G. Kolomensky, J. Dorfan, D. S. Chao, Colin Jessop, R. Gorodeisky, M. Simard, D. A. Roberts, R. Prepost, Ph Leruste, N. Arnaud, M. Davier, G. Vasseur, K. T. Flood, E. O. Olaiya, M. J. Lee, Florian Urs Bernlochner, F. Palombo, T. Lueck, James D. Olsen, G. Grosdidier, B. Hamilton, M. Ebert, A. M. Rossi, Joseph Izen, C. Hast, L. T. Kerth, A. Hafner, P. M. Patel, G. R. Bonneaud, E. M. T. Puccio, I. Garzia, G. Calderini, C. Patrignani, V. Tisserand, G. P. Dubois-Felsmann, E. Gabathuler, F. C. Porter, Simon Akar, M. Chrzaszcz, C. Voß, G. Onorato, Sw. Banerjee, W. Dunwoodie, B. T. Meadows, G. Raven, M. D. Sokoloff, P. R. Burchat, R. Sacco, A. J.S. Smith, R. Ayad, James R. Wilson, H. Briand, G. Eigen, Stefan Spanier, M. Morandin, U. Uwer, R. Stroili, E. P. Solodov, T. S. Miyashita, M. Bellis, M. Rotondo, G. De Nardo, M. Röhrken, B. G. Pushpawela, D. Su, M. Piccolo, G. Batignani, E. Ben-Haim, Denis Derkach, F. Di Lodovico, R. Contri, D. J. Payne, G. Finocchiaro, M. S. Alam, B. Echenard, M. K. Sullivan, D. Bernard, J. M. Roney, F. F. Wilson, B. Oberhof, J. Va'Vra, S. Bettarini, J. G. Smith, K. Yu. Todyshev, B. Spaan, H. H. F. Choi, W. Gradl, S. Emery, L. Lanceri, and G. D. Lafferty
Subjects: Physics, Particle physics, Muon, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, 01 natural sciences, B-factory, Isospin, 0103 physical sciences, B meson, 010306 general physics
Abstract: We report on measurements of the decays of B¯ mesons into the semileptonic final states B¯→D^(*)π^(+)π^(-)l^(-)ν¯, where D^(*) represents a D or D^(*) meson and l^(-) is an electron or a muon. These measurements are based on 471×10^(6) BB ¯ pairs recorded with the BABAR detector at the SLAC asymmetric B factory PEP-II. We determine the branching fraction ratios R_{π^{+}π^{-}}^{(*)}=B(B[over ¯]→D^{(*)}π^{+}π^{-}l^{-}ν[over ¯])/B(B[over ¯]→D^{(*)}l^{-}ν[over ¯]) using events in which the second B meson is fully reconstructed. We find R_{π^{+}π^{-}}=0.067±0.010±0.008 and R_{π^{+}π^{-}}^{*}=0.019±0.005±0.004, where the first uncertainty is statistical and the second is systematic. Based on these results and assuming isospin invariance, we estimate that B[over ¯]→D^{(*)}ππl^{-}ν[over ¯] decays, where π denotes either a π^{±} and π^{0} meson, account for up to half the difference between the measured inclusive semileptonic branching fraction to charm hadrons and the corresponding sum of previously measured exclusive branching fractions.
Published: 2016

45. Measurement of theI=1/2Kπ S-wave amplitude from Dalitz plot analyses ofηc→KK¯πin two-photon interactions

Author: J. L. Ritchie, Herbert Koch, S. I. Serednyakov, R. Y. So, K. Griessinger, F. De Mori, A. G. Denig, Brian Meadows, A. Oyanguren, G. J. King, S. Emery, Colin Jessop, K. R. Schubert, F. Di Lodovico, Timothy Gershon, T. Leddig, D. J. Payne, R. Godang, Yu. G. Kolomensky, W. S. Lockman, Biplab Dey, R. Kowalewski, H. A. Neal, M. R. Convery, R. Gorodeisky, D. A. Roberts, J. Chauveau, R. Prepost, C. Touramanis, C. H. Chen, S. M. Spanier, J. R. Smith, B. Bhuyan, D. Bettoni, B. G. Fulsom, R. Stroili, Marcin Chrzaszcz, R. Calabrese, G. Vasseur, K. T. Flood, M. Verderi, A. Hafner, A. Calcaterra, U. Mallik, A. R. Buzykaev, B. N. Ratcliff, Elisa Manoni, A. Roodman, A. M. Lutz, E. M. T. Puccio, A. Beaulieu, R. Cenci, J. M. Roney, M. K. Sullivan, Marco Bomben, W. J. Wisniewski, I. Garzia, James R. Wilson, Thomas Latham, C. Patrignani, A. Zallo, E. A. Kravchenko, V. Tisserand, Yu. I. Skovpen, E. Fioravanti, Maurizio Biasini, Douglas Wright, S. Passaggio, M. Fritsch, D. B. MacFarlane, Z. C. Huard, Miriam Heß, Roland Waldi, M. T. Graham, J. Ocariz, Eleonora Luppi, Andrei Gritsan, Owen Rosser Long, C. Bünger, G. Eigen, F. Ferroni, D. N. Brown, S. Bettarini, George Lafferty, A. Filippi, J. W. Gary, Crisostomo Sciacca, D. Aston, J. A. Ernst, J. Kim, Sw. Banerjee, F. Anulli, R. Cheaib, Alessandro Gaz, A. Jawahery, A. P. Onuchin, R. Cowan, L. Sun, G. Cibinetto, R. Sacco, E. Grauges, Mario Giorgi, Abner Soffer, E. P. Solodov, T. S. Miyashita, Adrian John Bevan, J. M. LoSecco, Alessandro Pilloni, D. R. Peimer, J. J. Walsh, T. S. Mattison, G. R. Bonneaud, Michael R. Pennington, Paul Fraser Harrison, O. Grünberg, C. Hast, D. J. Lange, A. J.S. Smith, D. W. G. S. Leith, G. Piredda, W. Panduro Vazquez, Simon Akar, M. Carpinelli, Stephen Sekula, Tim Adye, M. Bellis, R. D. Kass, J. A. McKenna, E. Gabathuler, C. Bozzi, K. Honscheid, W. R. Innes, F. C. Porter, E. Paoloni, G. Calderini, G. Raven, V. B. Golubev, P. R. Burchat, Fernando Palombo, Stephen Robert Wagner, Christian Voß, Matteo Rama, M. Posocco, A. Palano, S. Prell, J. Dorfan, Michael Sokoloff, James H Cochran, V. Poireau, Roger Barlow, Martino Margoni, Florian Urs Bernlochner, T. Lueck, David Hutchcroft, W. Gradl, P. Ongmongkolkul, L. Lanceri, M. Ebert, N. Tasneem, S. Luitz, P. Patteri, R. C. Field, V. P. Druzhinin, G. Finocchiaro, Aidan Randle-Conde, V. Luth, A. M. Rossi, M. S. Alam, Joseph Izen, M. Piccolo, S. Martellotti, B. Oberhof, N. Arnaud, G. Batignani, K. Yu. Todyshev, B. G. Pushpawela, I. M. Nugent, D. S. Chao, M. Davier, R. F. Schwitters, C. H. Cheng, Alberto Lusiani, G. De Nardo, R. de Sangro, S. L. Wu, M. Röhrken, P. Taras, B. Echenard, D. Bernard, J. P. Coleman, Fergus Wilson, A. M. Eisner, G. Hamel de Monchenault, M. V. Purohit, J. Albert, I. M. Peruzzi, V. Santoro, F. Bianchi, S. Dittrich, V. E. Blinov, G. Rizzo, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, Marcello Rotondo, L. M. Cremaldi, G. A. Cowan, D. G. Hitlin, J. Va’vra, Nicola Neri, D. Gamba, Giulia Casarosa, G. Wormser, N. Guttman, G. Marchiori, T. Schroeder, W. Dunwoodie, F. Simonetto, Jean-Pierre Lees, C. Cartaro, E. Ben-Haim, X. C. Lou, C. Hearty, D. J. Summers, L. Vitale, F. Martinez-Vidal, Dominik Müller, H. Ahmed, F. Forti, Gabriele Simi, C. L. Davis, Peter S. Kim, and S. H. Robertson
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, Partial wave analysis, Electron–positron annihilation, Phase (waves), Resonance, Dalitz plot, 01 natural sciences, law.invention, Nuclear physics, Amplitude, law, 0103 physical sciences, 010306 general physics, Collider
Abstract: We study the processes γγ→K^0_SK^±π^∓ and γγ→K^+K^−π^0 using a data sample of 519 fb^(−1) recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e− collider at center-of-mass energies at and near the Υ(nS) (n=2, 3, 4) resonances. We observe ηc decays to both final states and perform Dalitz plot analyses using a model-independent partial wave analysis technique. This allows a model-independent measurement of the mass-dependence of the I=1/2 Kπ S-wave amplitude and phase. A comparison between the present measurement and those from previous experiments indicates similar behavior for the phase up to a mass of 1.5 GeV/c^2. In contrast, the amplitudes show very marked differences. The data require the presence of a new a_0(1950) resonance with parameters m=1931±14±22 MeV/c^2 and Γ=271±22±29 MeV.
Published: 2016

46. Measurement of $R$ between 1.84 and 3.05 GeV at the KEDR detector

Author: Olga Rezanova, Alexey Maslennikov, A. Bobrov, K.Yu. Kotov, V. V. Petrov, A.K. Barladyan, A.N. Zhuravlev, N. Yu. Muchnoi, D.N. Grigoriev, V.M. Aulchenko, Yu. V. Usov, V.V. Anashin, V. S. Bobrovnikov, V.N. Zhilich, A.E. Bondar, Oleg Meshkov, A.Yu. Barnyakov, S.V. Karpov, Evgenii Baldin, S. I. Mishnev, I.I. Morozov, Alexey Buzykaev, Valery I. Telnov, G.Ya. Kurkin, V.F. Kulikov, Vladimir Blinov, E.A. Kuper, E. A. Kravchenko, P.V. Kasyanenko, Dmitry Shatilov, A.V. Bogomyagkov, V.A. Tayursky, V.K. Sandyrev, Evgeny Levichev, G.A. Savinov, V.G. Prisekin, S.G. Pivovarov, A.G. Shamov, G.M. Tumaikin, S.E. Baru, S.B. Oreshkin, S.I. Eidelman, A. E. Blinov, S.A. Kononov, V.V. Kolmogorov, A.A. Osipov, A. P. Onuchin, G.V. Karpov, A.I. Vorobiov, I.V. Ovtin, I. A. Kuyanov, M.Yu. Barnyakov, Sergey Peleganchuk, Tatyana Kharlamova, A.N. Skrinsky, V. Kudryavtsev, I.Yu. Basok, I.N. Okunev, V. A. Kiselev, K. Yu. Todyshev, Sergey Sinyatkin, Pavel Piminov, E. A. Simonov, S.A. Nikitin, Yu. A. Tikhonov, V. M. Malyshev, E.V. Starostina, V.V. Neufeld, Andrey Sokolov, D.A. Maksimov, A.A. Ruban, Sergey Karnaev, A.M. Batrakov, Yu.M. Glukhovchenko, Alexey Talyshev, A.M. Sukharev, I. B. Nikolaev, B.A. Shwartz, and Vladimir Zhulanov
Subjects: Physics, Systematic error, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Detector, FOS: Physical sciences, 01 natural sciences, lcsh:QC1-999, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, 010306 general physics, Collider, lcsh:Physics, Energy (signal processing)
Abstract: Using the KEDR detector at the VEPP-4M e + e − collider, we have determined the values of R at thirteen points of the center-of-mass energy between 1.84 and 3.05 GeV. The achieved accuracy is about or better than 3.9 % at most of the energy points with a systematic uncertainty less than 2.4 % .
Published: 2016
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47. A scenario for high accuracy τ mass measurement at BEPC-II

Author: Zhang Jian-Yong, A.G. Shamov, Qian Liu, Wang Yi-Fang, Qin Qing, V. E. Blinov, K. Yu Todyshev, N. Yu. Muchnoi, Mo Xiao-Hu, Cai Xiao, I. B. Nikolaev, Fu Cheng-Dong, M. N. Achasov, and F. A. Harris
Subjects: Physics, Nuclear and High Energy Physics, Luminosity (scattering theory), Astronomy and Astrophysics, Mass measurement, law.invention, Nuclear physics, Beijing, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Statistical error, Minification, Collider, Instrumentation, Energy (signal processing)
Abstract: Scenarios for the τ mass measurement at the upgraded Beijing Electron-Positron Collider (BEPC-II) are studied. A nested minimization procedure is used to optimize the data taking plan. It is found that by using five energy points with the total integrated luminosity of 100 pb−1,the τ mass can be determined with a statistical error of 50 keV.
Published: 2012

48. Measurement of main parameters of the ψ(2S) resonance

Author: M.Yu. Barnyakov, S.G. Pivovarov, S.I. Eidelman, V.F. Kulikov, A. Bobrov, K. Yu. Todyshev, E. A. Simonov, K.Yu. Kotov, S.A. Nikitin, A.G. Shamov, O. L. Beloborodova, Yu. A. Tikhonov, A. R. Buzykaev, A.N. Skrinsky, S.B. Oreshkin, S.V. Karpov, A.K. Barladyan, V.V. Gulevich, Victor Smaluk, V.V. Kolmogorov, N. Yu. Muchnoi, I.O. Orlov, A.N. Zhuravlev, G.Ya. Kurkin, Sergey Sinyatkin, Alexey Talyshev, Pavel Piminov, A. E. Blinov, I. B. Nikolaev, G.V. Karpov, D.N. Grigoriev, Yu. V. Usov, A.I. Vorobiov, Sergey Peleganchuk, A. N. Yushkov, I.N. Okunev, Dmitry Shatilov, D. V. Gusev, V.V. Anashin, B.A. Shwartz, V.A. Tayursky, G.A. Savinov, Sergey Karnaev, V.M. Aulchenko, V.N. Zhilich, A.A. Ruban, A.E. Bondar, Oleg Meshkov, A.S. Medvedko, Valery I. Telnov, E.A. Kuper, I.Yu. Basok, Evgenii Baldin, Tatyana Kharlamova, V. A. Kiselev, Anton Poluektov, A. Sokolov, S.A. Kononov, Vladimir Zhulanov, A.M. Sukharev, V.K. Sandyrev, Evgeny Levichev, Yu.M. Glukhovchenko, D.A. Maksimov, S.E. Baru, V. E. Blinov, A.V. Bogomyagkov, E.V. Starostina, V.V. Neufeld, I. I. Morozov, V. M. Malyshev, A. Yu. Barnyakov, A.A. Osipov, S. I. Mishnev, A. P. Onuchin, G.M. Tumaikin, Victor Bobrovnikov, V.G. Prisekin, Alexey Maslennikov, V. V. Petrov, and E. A. Kravchenko
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Annihilation, Partial width, Branching fraction, Hadron, High Energy Physics::Experiment, Electron, Atomic physics
Abstract: A high-precision determination of the main parameters of the ψ ( 2 S ) resonance has been performed with the KEDR detector at the VEPP-4M e + e − collider in three scans of the ψ ( 2 S ) – ψ ( 3770 ) energy range. Fitting the energy dependence of the multihadron cross section in the vicinity of the ψ ( 2 S ) we obtained the mass value M = 3686.114 ± 0.007 ± 0.011 − 0.012 + 0.002 MeV and the product of the electron partial width by the branching fraction into hadrons Γ e e × B h = 2.233 ± 0.015 ± 0.037 ± 0.020 keV . The first and second uncertainties are statistical and systematic, respectively. The third uncertainty quoted is an estimate of the model dependence of the result due to assumptions on the interference effects in the cross section of the single-photon e + e − annihilation to hadrons explicitly considered in this work. Implicitly, the same assumptions were employed to obtain the charmonium leptonic width and the absolute branching fractions in many experiments. Using the result presented and the world average values of the electron and hadron branching fractions, one obtains the electron partial width and the total width of the ψ ( 2 S ) : Γ e e = 2.282 ± 0.015 ± 0.038 ± 0.021 keV , Γ = 296 ± 2 ± 8 ± 3 keV . These results are consistent with and more than two times more precise than any of the previous experiments.
Published: 2012

49. Collins asymmetries in inclusive chargedKKandKπpairs produced ine+e−annihilation

Author: M. Hess, Alessandro Pilloni, D. R. Peimer, A. M. Eisner, S. Martellotti, M. Rotondo, B. N. Ratcliff, J. L. Ritchie, G. De Nardo, R. Cowan, S. I. Serednyakov, A. Adametz, F. De Mori, M. Röhrken, Z. C. Huard, M. V. Purohit, I. M. Nugent, J. Albert, S. Luitz, P. Taras, R. Y. So, Heiko Lacker, H. A. Neal, Biplab Dey, L. M. Cremaldi, D. S. Chao, F. Anulli, M. Davier, Bruce Schumm, F. Di Lodovico, R. Andreassen, I. M. Peruzzi, A. Calcaterra, B. G. Pushpawela, Yu. I. Skovpen, Alessandro Gaz, F. Bianchi, J. Dorfan, M. Gaspero, S. Dittrich, J. P. Coleman, D. J. Payne, R. Godang, V. Prasad, Roberto Calabrese, Y. B. Pan, R. Kowalewski, D. Bettoni, Ph Leruste, A. R. Buzykaev, K. R. Schubert, N. Arnaud, A. Beaulieu, R. Cenci, R. C. Field, S. H. Robertson, D. G. Hitlin, Simon Akar, A. Oyanguren, A. Zallo, A. Stocchi, Abner Soffer, G. Finocchiaro, V. Luth, M. J. Lee, G. Onorato, J. Chauveau, Marco Bomben, Herbert Koch, Corrado Angelini, A. Filippi, Stephen Sekula, M. S. Alam, B. Hamilton, M. Ebert, J. R. Fry, Andrei Gritsan, Denis Derkach, D. Su, M. Fritsch, C. Cartaro, D. Lopes Pegna, B. T. Meadows, Douglas Wright, A. Khan, G. Raven, K. Griessinger, C. Bozzi, K. Honscheid, A. M. Rossi, R. Contri, M. D. Sokoloff, P. R. Burchat, Dmytro Kovalskyi, Eleonora Luppi, Joseph Izen, R. F. Schwitters, A. Snyder, F. F. Wilson, C. H. Cheng, M. Piccolo, J. P. Lees, C. Touramanis, J. Ocariz, Giulia Casarosa, G. Wormser, R. de Sangro, S. L. Wu, J. W. Gary, M. Posocco, Maria Roberta Monge, I. Garzia, P. Ongmongkolkul, F. Forti, Maurizio Biasini, J. A. McKenna, G. Batignani, K. Yu. Todyshev, Colin Jessop, A. Roodman, Christopher West, B. Echenard, B. Bhuyan, T. Schroeder, R. Prepost, D. Bernard, E. Fioravanti, T. Pulliam, W. Dunwoodie, E. Paoloni, S. Prell, O. Grünberg, E. O. Olaiya, Peter S. Kim, C. Patrignani, V. Tisserand, B. Oberhof, M. J. Lewczuk, James H Cochran, R. Cheaib, F. Simonetto, V. Poireau, Roger Barlow, Martino Margoni, Florian Urs Bernlochner, B. G. Fulsom, P. Roudeau, J. Va’vra, Owen Rosser Long, W. H. Toki, V. Santoro, R. H. Schindler, A. Seiden, R. Sacco, A. Lusiani, X. C. Lou, J. J. Walsh, F. Palombo, T. Lueck, A. G. Denig, S. Bettarini, Roland Waldi, F. Ferroni, Paul Fraser Harrison, H. W. Wulsin, V. E. Blinov, J. A. Ernst, E. Ben-Haim, D. Gamba, G. P. Dubois-Felsmann, V. P. Druzhinin, James D. Olsen, E. A. Kravchenko, Crisostomo Sciacca, D. Aston, T. S. Mattison, G. Vasseur, H. H. F. Choi, K. T. Flood, S. Emery, D. N. Brown, P. M. Patel, G. Rizzo, M. Rama, Stephen Robert Wagner, N. Guttman, Sw. Banerjee, A. P. Onuchin, L. Sun, A. J.S. Smith, C. Hast, D. J. Lange, T. M. Hong, G. Piredda, C. Hearty, L. T. Kerth, B. Stugu, W. Panduro Vazquez, Yu. G. Kolomensky, M. K. Sullivan, W. T. Ford, Adrian John Bevan, T. E. Latham, M. Carpinelli, R. Gorodeisky, D. J. Summers, G. Lynch, J. M. Roney, G. D. Lafferty, E. Grauges, Tim Adye, R. D. Kass, T. J. Gershon, J. M. LoSecco, G. Marchiori, Mario Giorgi, R. J. Sobie, N. Tasneem, B. Spaan, M. Simard, D. A. Roberts, L. Vitale, G. Grosdidier, Sridhara Dasu, F. Martinez-Vidal, Dominik Müller, W. Gradl, L. Lanceri, J. G. Smith, Elisa Manoni, S. Playfer, R. Faccini, F. Ferrarotto, A. J. Lankford, A. Hafner, H. Ahmed, F. Le Diberder, Bogdan Malaescu, Aidan Randle-Conde, E. M. T. Puccio, M. Franco Sevilla, J. D. Richman, M. T. Graham, D. J. Bard, Gabriele Simi, V. B. Golubev, D. B. MacFarlane, C. L. Davis, G. A. Cowan, L. Piemontese, E. Gabathuler, W. R. Innes, F. C. Porter, A. Palano, M. Chrzaszcz, C. Voß, G. R. Bonneaud, G. J. King, D. W. G. S. Leith, G. Calderini, P. Patteri, C. Bünger, A. Jawahery, G. Cibinetto, A. M. Lutz, W. J. Wisniewski, S. Passaggio, D. E. Hutchcroft, T. Leddig, H. R. Band, W. S. Lockman, M. R. Convery, C. H. Chen, S. M. Spanier, M. Verderi, U. Mallik, N. Neri, P. C. Bloom, M. Morandin, U. Uwer, R. Stroili, E. P. Solodov, T. S. Miyashita, M. Bellis, R. Ayad, James R. Wilson, H. Briand, and G. Eigen
Subjects: Quark, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Electron–positron annihilation, Hadron, Center (category theory), BaBar experiment, High Energy Physics::Experiment, Sign (mathematics), B-factory
Abstract: We present measurements of Collins asymmetries in the inclusive process e^+e^− → h_1h_2X, h_1h_2 = KK, Kπ, ππ, at the center-of-mass energy of 10.6 GeV, using a data sample of 468 fb^(−1) collected by the BABAR experiment at the PEP-II B factory at SLAC National Accelerator Center. Considering hadrons in opposite thrust hemispheres of hadronic events, we observe clear azimuthal asymmetries in the ratio of unlike sign to like sign, and unlike sign to all charged h_1h_2 pairs, which increase with hadron energies. The Kπ asymmetries are similar to those measured for the ππ pairs, whereas those measured for high-energy KK pairs are, in general, larger.
Published: 2015

50. Search for narrow resonances in e+e− annihilation between 1.85 and 3.1 GeV with the KEDR detector

Author: S.G. Pivovarov, A.G. Shamov, V. V. Petrov, D.N. Grigoriev, V. E. Blinov, S.I. Eidelman, Yu.M. Glukhovchenko, D. V. Gusev, Tatyana Kharlamova, V.F. Kulikov, V.N. Zhilich, V.M. Aulchenko, Oleg Meshkov, A.N. Zhuravlev, A.K. Barladyan, V.V. Gulevich, G.M. Tumaikin, A.V. Bogomyagkov, V.V. Anashin, V. M. Malyshev, A. N. Yushkov, Sergey Peleganchuk, A. Bobrov, G.A. Savinov, E. A. Kravchenko, Sergey Karnaev, D. A. Maksimov, S.B. Oreshkin, K.Yu. Kotov, S.E. Baru, Valery I. Telnov, O. L. Beloborodova, A.A. Ruban, V. A. Kiselev, V.K. Sandyrev, A.E. Bondar, E.A. Kuper, N. Yu. Muchnoi, I.B. Nikolaev, S.V. Karpov, Evgenii Baldin, B.A. Shwartz, A. Sokolov, S.A. Kononov, A. Yu. Barnyakov, A.N. Skrinsky, V. Kudryavtsev, A.A. Osipov, S. I. Mishnev, A. P. Onuchin, M.Yu. Barnyakov, Vladimir Zhulanov, Yu. V. Usov, I.N. Okunev, K. Yu. Todyshev, E.V. Starostina, V.V. Neufeld, V.V. Kolmogorov, Alexey Talyshev, A.S. Medvedko, I.Yu. Basok, I.I. Morozov, Anton Poluektov, Alexey Maslennikov, Dmitry Shatilov, Victor Smaluk, V.G. Prisekin, I.O. Orlov, Sergey Sinyatkin, Pavel Piminov, A. E. Blinov, E. A. Simonov, S.A. Nikitin, Yu. A. Tikhonov, A. R. Buzykaev, Victor Bobrovnikov, V.A. Tayursky, G.V. Karpov, A.I. Vorobiov, Evgeny Levichev, G.Ya. Kurkin, and A.M. Sukharev
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, law, Electron–positron annihilation, Detector, Resonance, High Energy Physics::Experiment, Collider, law.invention
Abstract: We report results of a search for narrow resonances in e + e − annihilation at center-of-mass energies between 1.85 and 3.1 GeV performed with the KEDR detector at the VEPP-4M e + e − collider. The upper limit on the leptonic width of a narrow resonance Γ e e R ⋅ Br ( R → h a d r ) 120 eV has been obtained (at 90% C.L.).
Published: 2011

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