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Related papers: The BABAR Detector: Upgrades, Operation and Perfor…

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After nine years of operation the BABAR experiment at the B factory PEPII (Standford Linear Accelerator Center) stopped data taking in April 2008. The last three month of data taking were devoted to e+e- collisions at center of mass…

High Energy Physics - Experiment · Physics 2019-08-13 Joerg Marks

We will present the most recent results on leptonic B decays $B^{\pm(0)} \to K^{* \pm (0)} \nu \bar{\nu}$ and $B^{\pm} \to \mu^{\pm} \nu$, based on the data collected by the BaBar detector at PEP-II, an asymmetric $e^+ e^-$ collider at the…

High Energy Physics - Experiment · Physics 2008-10-15 Elisabetta Baracchini

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 report recent measurements of rare charmless B decays performed by BaBar. The results are based on the final BaBar dataset of 424 fb^{-1} collected at the PEP-II $B$-factory based at the SLAC National Accelerator Laboratory.

High Energy Physics - Experiment · Physics 2019-08-13 Simone Stracka

The BaBar experiment at SLAC is designed to measure CP violation in the B meson system, however the very high statistics combined with the different electron and positron beam energies, the detector design and the open trigger allow a wide…

High Energy Physics - Experiment · Physics 2009-11-11 David Muller

We present studies in bottomonium spectroscopy carried out with samples of $(98\pm1)$ million $\Upsilon(2S)$ and $(121\pm1)$ million $\Upsilon(3S)$ events recorded with the BaBar detector at the PEP-II asymmetric-energy $e^+ e^-$ collider…

High Energy Physics - Experiment · Physics 2011-10-04 V. Ziegler

We have searched for the lepton-number violating processes B+ -> h- l+ l+ with h- = K-/pi- and l+ = e+/mu+, using a sample of 471+/-3 million BBbar events collected with the BaBar detector at the PEP-II e+e- collider at the SLAC National…

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

We report recent measurements of the CKM angle alpha using data collected by the BABAR detector at the PEP-II asymmetric-energy e+e- collider at the SLAC National Accelerator Laboratory. In addition to improved constraints on alpha from the…

High Energy Physics - Experiment · Physics 2014-11-20 Vincenzo Lombardo

The ATLAS experiment took its first beam data in September 2008 and is actively preparing for the planned start of LHC collision data-taking in 2009. This preparation includes hardware and software commissioning, as well as calibration and…

Nuclear Experiment · Physics 2019-08-13 Jiri Dolejsi

Using a sample of 227 million $\Upsilon(4S) \to B \bar{B}$ events collected with the $BABAR$ detector at the PEP-II $B$ Factory in 1999--2004, we study $B^- \to D^0 K^*(892)^-$ decays where $K^{*-} \to K^0_S \pi^-$ and $D^0 \to K^-\pi^+,…

High Energy Physics - Experiment · Physics 2009-09-29 B. Aubert , BABAR Collaboration

We present a summary of the hadronic cross section measurements performed with BaBar at the PEP-II collider via radiative return. BaBar has performed measurements of exclusive final states containing 3, 4 and 6 hadrons via this…

High Energy Physics - Experiment · Physics 2012-08-27 Achim Denig representing the BaBar collaboration

A search for the decay B+ -> a0+pi0 with the a0+ decaying to an eta and a pi+ was carried out at the Stanford Linear Accelerator Center using the BABAR detector coupled with the PEP-II collider. The analysis used a data sample comprised of…

High Energy Physics - Experiment · Physics 2007-05-23 BABAR Collaboration , B. Aubert

We present recent measurements of the CKM angles alpha and gamma using data collected by the BaBar detector at the PEP-II asymmetric-energy e+ e- collider at the Stanford Linear Accelerator Center. In addition to constraints on alpha from…

High Energy Physics - Experiment · Physics 2017-08-23 V. Lombardo

The BaBar collaboration has analysed 60M BB_ pairs collected at the Upsilon (4S) resonance at the PEP II asymetric collider at SLAC. Using this data sample we have measured the CP violation parameters sin (2beta)=0.75+/- 0.09 (STAT) +/-0.04…

High Energy Physics - Experiment · Physics 2009-11-10 David Payne

We present recent results on charmless hadronic B decays using data collected by the BaBar detector at the PEP-II asymmetric-energy e+e- collider at the Stanford Linear Accelerator Center. We report measurements of branching fractions and…

High Energy Physics - Experiment · Physics 2017-08-23 J. Biesiada

The process e+e- --> p anti-p has been studied in the p anti-p mass range from threshold to 6.5 GeV/c^2 using the initial-state-radiation technique with both detected and undetected photon. The analysis is based on 469 fb-1 of integrated…

High Energy Physics - Experiment · Physics 2015-06-18 V. P. Druzhinin

A program of measuring the light hadrons production in exclusive $e^+e^-$ to hadrons processes is in place at BaBar with the aim to improve the calculation of the hadronic contribution to the muon $g-2$. We present the most recent results…

High Energy Physics - Experiment · Physics 2019-06-25 Marcus Ebert

We report on a search for eleven lepton-number violating processes B+ -> X- l+ l'+ with X- = K-, pi-, rho-, K*- or D- and l+/l'+ = e+ or mu+, using a sample of 471+/-3 million BBbar events collected with the BaBar detector at the PEP-II…

High Energy Physics - Experiment · Physics 2014-02-05 J. P. Lees , others , The BABAR Collaboration

We present a novel method to characterize the e+/- phase space at the IP of the SLAC B-factory, that combines single-beam measurements with a detailed mapping of luminous-region observables. Transverse spot sizes are determined in the two…

Accelerator Physics · Physics 2014-11-18 A. Bevan , W. Kozanecki , B. Viaud , Y. Cai , A. Fisher , C. O'Grady , J. Thompson , M. Weaver

This article reports the first operation of a double-sided CMOS pixelated ladder in a collider experiment, namely in the inner tracker volume of the Belle II experiment during the Phase 2 run of the SuperKEKB collider. Design and…

Instrumentation and Detectors · Physics 2020-04-22 D. Cuesta , J. Baudot , G. Claus , M. Goffe , K. Jaaskelainen , L. Santelj , M. Specht , M. Szelezniak , I. Ripp-Baudot