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Related papers: Computing System for the Belle Experiment

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We describe the present status of the computing system in the Belle experiment at the KEKB $e^+e^-$ asymmetric-energy collider. So far, we have logged more than 160 fb$^{-1}$ of data, corresponding to the world's largest data sample of 170M…

Distributed, Parallel, and Cluster Computing · Computer Science 2009-11-10 Ichiro Adachi , Taisuke Hibino , Luc Hinz , Ryosuke Itoh , Nobu Katayama , Shohei Nishida , Frederic Ronga , Toshifumi Tsukamoto , Masahiko Yokoyama

The Belle II experiment at the SuperKEKB accelerator is a next-generation B-factory aiming to collect 50 ab$^{-1}$, about 50 times the data collected at Belle, to study rare processes and make precision measurements that may expose physics…

High Energy Physics - Experiment · Physics 2022-03-16 J. V. Bennett , J. Guilliams , M. Hernandez Villanueva , D. E. Jaffe , P. J. Laycock , A. Panta , C. Serfon , I. Ueda

The offline processing of the data collected by the Belle detector has been recently upgraded to cope with the excellent performance of the KEKB accelerator. The 127/fb of data (120 TB on tape) collected between autumn 2003 and summer 2004…

Instrumentation and Detectors · Physics 2007-05-23 F. J. Ronga , I. Adachi , N. Katayama

We describe a new B-meson full reconstruction algorithm designed for the Belle experiment at the B-factory KEKB, an asymmetric e+e- collider that collected a data sample of 771.6 x 10^6 BBbar pairs during its running time. To maximize the…

High Energy Physics - Experiment · Physics 2011-09-20 Michael Feindt , Fabian Keller , Michal Kreps , Thomas Kuhr , Sebastian Neubauer , Daniel Zander , Anze Zupanc

The B-factories have successfully exploited the unique advantages of the \Upsilon(4S) resonance to study many aspects of the B_d and B_u mesons. The \Upsilon(10860) resonance, also known as \Upsilon(5S), is above mass threshold for the B_s…

High Energy Physics - Experiment · Physics 2015-05-30 Kay Kinoshita

The Belle experiment collected in 2005-6 a total of 23.6 fb$^{-1}$ of data at the $\Upsilon(10860)$ resonance, also known as $\Upsilon$(5S). These constitute nearly all of the world's sample of $e^+e^- \to \Upsilon$(10860) events, which…

High Energy Physics - Experiment · Physics 2017-08-23 K. Kinoshita

The BELLE detector has already accumulated e^+ e^- collision data at the KEKB-collider corresponding to 600 fb^-1. BaBar has accumulated data of approximately 390 fb^-1 at PEP-II. Both are running on asymmetric energy e^+ e^- colliders at…

High Energy Physics - Experiment · Physics 2019-08-13 G. Leder

We present the first evidence of the decay B- --> tau- nu_tau-bar using 414 fb^-1 of data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Events are tagged by fully reconstructing…

High Energy Physics - Experiment · Physics 2019-08-14 K. Ikado

The B-factories have successfully exploited the unique advantages of the Upsilon(4S) resonance to study many aspects of Bd and Bu mesons. The Upsilon(10860) (aka Upsilon(5S)) resonance, which is above mass threshold for the Bs and shares…

High Energy Physics - Experiment · Physics 2010-05-24 Kay Kinoshita

The large data sample being recorded with the Belle detector at the $\Upsilon$(5S) energy provides a unique opportunity to study the less-well-known $B_s^{0}$ meson decays. Following our recent measurement of $B_s^{0}\to D_s^{-}\pi^{+}$ in…

High Energy Physics - Experiment · Physics 2019-08-13 Sevda Esen

The Belle II experiment at the SuperKEKB collider in Tsukuba, Japan, will start physics data taking in 2018. It is planned to accumulate an e+ e- collision data set of 50 /ab, about 50 times larger than that of the earlier Belle experiment.…

Instrumentation and Detectors · Physics 2015-11-02 Doris Yangsoo Kim

The Belle experiment, part of a broad-based search for new physics, is a collaboration of approximately 400 physicists from 55 institutions across four continents. The Belle detector is located at the KEKB accelerator in Tsukuba, Japan. The…

Instrumentation and Detectors · Physics 2013-08-06 David M. Asner , Eli Dart , Takanori Hara

The Belle and Belle II experiments have collected an 1.6 ab$^{-1}$ sample of $e^+e^-$ collision data at center-of-mass energies near the $\Upsilon(nS)$ resonances. In particular, the Belle II experiment collected a 19.2 fb$^{-1}$ sample of…

High Energy Physics - Experiment · Physics 2026-01-27 Martin Bartl for the Belle , Belle-II Collaborations

We report results of proper-time evolution analyses of B decays at Belle, based on a 29.1/fb data sample recorded at the Upsilon (4S) resonance. These results include measurements of sin2phi_1, the lifetime of B-mesons, and the…

High Energy Physics - Experiment · Physics 2014-11-17 Y. Sakai

The BaBar experiment is characterized by extremely high luminosity, a complex detector, and a huge data volume, with increasing requirements each year. To fulfill these requirements a new control system has been designed and developed for…

Distributed, Parallel, and Cluster Computing · Computer Science 2007-05-23 A. Ceseracciu , M. Piemontese , F. Safai Tehrani , P. Elmer , D. Johnson , T. M. Pulliam

We present high-performance implementations of the two-dimensional Ising and Blume-Capel models for large-scale, multi-GPU simulations. Our approach takes full advantage of the NVIDIA GB200 NVL72 system, which features up to $72$ GPUs…

We have searched for the decay $B^+\to\omega l^+\nu$ ($l=e$ or $\mu$) in 78 fb$^{-1}$ of $\Upsilon(4S)$ data (85 million $B\bar B$ events) accumulated with the Belle detector. The final state is fully reconstructed using the $\omega$ decay…

High Energy Physics - Experiment · Physics 2012-08-27 The Belle Collaboration

We report the measurements of electroweak penguin processes b->d,s gamma and b->sl+l- at the Belle experiment. The analyses are based on 152 million BB-bar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB…

High Energy Physics - Experiment · Physics 2019-08-14 M. Iwasaki

The Belle II experiment at the SuperKEKB collider in Tsukuba, Japan, will start physics data taking in 2018 and will accumulate 50 ab$^{-1}$ of e$^{+}$e$^{-}$ collision data, about 50 times larger than the data set of the earlier Belle…

Computational Physics · Physics 2015-11-24 Vikas Bansal

The data processing model for the CDF experiment is described. Data processing reconstructs events from parallel data streams taken with different combinations of physics event triggers and further splits the events into datasets of…

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