Related papers: Time-Integrated Luminosity Recorded by the BABAR D…

Questions about the Measurement of the $\rm{e}^{+}\rm{e}^{-}$ Luminosity Spectrum at a future linear Collider

Important analyses at a future linear collider, including top-quark and W-boson mass measurements will depend upon the precise determination of the luminosity spectrum. This can be done, in principle,in the planned detectors. We review the…

High Energy Physics - Experiment · Physics 2007-05-23 Stewart T. Boogert , David J. Miller

Observation of anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance

We report the first observation of e+e- -> Upsilon(1S)pi+pi-, Upsilon(2S)pi+pi-, and first evidence for e+e- -> Upsilon(3S)pi+pi-, Upsilon(1S)K+K-, near the peak of the Upsilon(5S) resonance at sqrt{s}~10.87 GeV. The results are based on a…

High Energy Physics - Experiment · Physics 2009-10-26 The Belle Collaboration , K. -F. Chen , W. -S. Hou , M. Shapkin , A. Sokolov et al

Search for the Lepton Flavour Violating decays $\Upsilon(2S)\rightarrow e^{\pm}\mu^{\mp}$ and $\Upsilon(3S)\rightarrow e^{\pm}\mu^{\mp}$

Charged lepton flavour violating processes are unobservable in the standard model, but they are predicted to be enhanced in several new physics extensions. We present the results of a search for $\Upsilon (2S)$ and $\Upsilon (3S)$ decays to…

High Energy Physics - Experiment · Physics 2026-03-09 H. Ahmed , N. Tasneem , J. M. Roney

Measurement of the Branching Fraction of Upsilon(4S) --> B0B0bar

We report the first measurement of the branching fraction f00 for Upsilon(4S) --> B0B0bar. The data sample consists of 81.7 fb^-1 collected at the Upsilon(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy e^+e^- storage…

High Energy Physics - Experiment · Physics 2008-11-26 The BABAR Collaboration , B. Aubert

Study of the process $e^+e^- \to \pi^+\pi^-\eta $ using initial state radiation

We study the process $e^+e^- \to \pi^+\pi^-\eta \gamma$, where the photon is radiated from the initial state. About 8000 fully reconstructed events of this process are selected from the BaBar data sample with an integrated luminosity of…

High Energy Physics - Experiment · Physics 2018-03-28 The BABAR Collaboration

Is Upsilon(10580) really Upsilon(4S)?

We analyse electron-positron data for b-bbar production published by the BABAR Collaboration, in the invariant-mass interval delimited by the B-Bbar and Lambda(b)-Lambda(b) thresholds. In particular, we describe the Upsilon(10580)…

High Energy Physics - Phenomenology · Physics 2010-10-08 Eef van Beveren , George Rupp

Observation of B Meson Decays to omegapi+, omegaK+, and omegaK0

We present preliminary measurements of B meson decays to omegapi+, omegaK+, and omegaK0. The data were recorded with the BABAR detector and correspond to 88.9x10^6 BBbar pairs produced in e+e- annihilation at the Upsilon(4S) resonance. We…

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

Theoretical and experimental evaluation of multilayer porous silicon structures for enhanced erbium up-conversion luminescence

The enhancement of Er$^{3+}$-based up-conversion for photovoltaics in multilayer porous silicon photonic structures is considered theoretically and experimentally. Transfer matrix simulations are used to assess the increased photonic…

Optics · Physics 2012-09-06 Craig M. Johnson , Peter J. Reece , Gavin J. Conibeer

Search for gammagamma -> eta_b in e+e- collisions at LEP2

A search for the pseudoscalar meson eta_b is performed in two-photon interactions at LEP~2 with an integrated luminosity of 699 pb^-1 collected at e+e- centre-of-mass energies from 181 GeV to 209 GeV. One candidate event is found in the…

High Energy Physics - Experiment · Physics 2012-08-27 ALEPH Collaboration

Tau decays and dark-sector searches at BaBar

We present some recent measurements performed using 514 fb-1 of $e^+e^-$ collisions collected with the BaBar detector at the PEP-II asymmetric collider at SLAC. First we present a study of the decay tau -> K K_S nu, we measure the branching…

High Energy Physics - Experiment · Physics 2019-04-08 Benjamin Oberhof

Studies of Hadron Spectroscopy at Belle and Belle II

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

$\Upsilon$ Dipion Transitions at Energies Near the $\Upsilon(4S)$

Using a data sample collected with the CLEO II detector at CESR, we have searched for dipion transitions between pairs of $\Upsilon$ resonances at energies near the $\Upsilon(4S)$. We obtain upper limits $B(\Upsilon(4S)\to…

High Energy Physics - Experiment · Physics 2010-04-08 S. Glenn

Extraction of the Width of the W Boson from Measurements of sigma(ppbar->W+X)B(W->e nu) and sigma(ppbar->Z+X)B(Z->e e) and their Ratio

We report on measurements of inclusive cross sections times branching fractions into electrons for W and Z bosons produced in ppbar collisions at sqrts=1.8 TeV.From an integrated luminosity of 84.5 inverse pb recorded in 1994--1995 using…

High Energy Physics - Experiment · Physics 2012-08-27 D0 Collaboration

A High Luminosity e+e- Collider to study the Higgs Boson

A strong candidate for the Standard Model Scalar boson, H(126), has been discovered by the Large Hadron Collider (LHC) experiments. In order to study this fundamental particle with unprecedented precision, and to perform precision tests of…

Accelerator Physics · Physics 2013-04-03 A. Blondel , M. Koratzinos , R. W. Assmann , A. Butterworth , P. Janot , J. M. Jimenez , C. Grojean , A. Milanese , M. Modena , J. A. Osborne , F. Zimmermann , H. Piekarz , K. Oide , K. Yokoya , J. Ellis , M. Klute , M. Zanetti , M. Velasco , V. Telnov , L. Rivkin , Y. Cai

A Study of b --> c and b -->u Interference in the Decay B- --> [K+ pi-]_D K*-

Using a sample of 232 x 10^6 Upsilon(4S)--> B B-bar events collected with the BABAR detector at the PEP-II B-factory we study the decay B- --> [K+ pi-]_D K*- where the K+ pi- is either from a Cabibbo-favored D0-bar decay or…

High Energy Physics - Experiment · Physics 2010-03-19 B. Aubert , BABAR Collaboration

Measurement of Neutral-Current Four-Fermion Production at LEP2

Four-fermion final states qqbar e+e- and qqbar mu+mu- from neutral-current interactions in e+e- collisions are studied in the OPAL detector at LEP at centre-of-mass energies from 183 GeV to 209 GeV. The data analysed correspond to a total…

High Energy Physics - Experiment · Physics 2012-08-27 The OPAL collaboration

New results from the B factories Belle and BaBar

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

Observation of a resonant structure in $e^{+}e^{-} \to K^{+}K^{-}\pi^{0}\pi^{0}$

Using $e^{+}e^{-}$ collision data samples with center-of-mass energies ranging from 2.000 to 2.644 GeV, collected by the BESIII detector at the BEPCII collider, and with a total integrated luminosity of 300 pb^{-1}, a partial-wave analysis…

High Energy Physics - Experiment · Physics 2020-03-25 M. Ablikim , M. N. Achasov , P. Adlarson , S. Ahmed , M. Albrecht , A. Amoroso , Q. An , Anita , Y. Bai , O. Bakina , R. Baldini Ferroli , I. Balossino , Y. Ban , K. Begzsuren , J. V. Bennett , N. Berger , M. Bertani , D. Bettoni , F. Bianchi , J. Biernat , J. Bloms , I. Boyko , R. A. Briere , H. Cai , X. Cai , A. Calcaterra , G. F. Cao , N. Cao , S. A. Cetin , J. F. Chang , W. L. Chang , G. Chelkov , D. Y. Chen , G. Chen , H. S. Chen , M. L. Chen , S. J. Chen , X. R. Chen , Y. B. Chen , W. Cheng , G. Cibinetto , F. Cossio , X. F. Cui , H. ~L. ~Dai , J. P. Dai , X. C. Dai , A. Dbeyssi , D. Dedovich , Z. Y. Deng , A. Denig , I. Denysenko , M. Destefanis , F. De Mori , Y. Ding , C. Dong , J. Dong , L. Y. Dong , M. Y. Dong , S. X. Du , J. Fang , S. S. Fang , Y. Fang , R. Farinelli , L. Fava , F. Feldbauer , G. Felici , C. Q. Feng , M. Fritsch , C. D. Fu , Y. Fu , X. L. Gao , Y. Gao , Y. Gao , Y. G. Gao , I. Garzia , E. M. Gersabeck , A. Gilman , K. Goetzen , L. Gong , W. X. Gong , W. Gradl , M. Greco , L. M. Gu , M. H. Gu , S. Gu , Y. T. Gu , C. Y Guan , A. Q. Guo , L. B. Guo , R. P. Guo , Y. P. Guo , Y. P. Guo , A. Guskov , S. Han , T. T. Han , T. Z. Han , X. Q. Hao , F. A. Harris , K. L. He , F. H. Heinsius , T. Held , Y. K. Heng , M. Himmelreich , T. Holtmann , Y. ~R. ~Hou , Z. ~L. ~Hou , H. ~M. ~Hu , J. ~F. ~Hu , T. ~Hu , Y. ~Hu , G. ~S. ~Huang , L. ~Q. ~Huang , X. ~T. ~Huang , N. ~Huesken , T. ~Hussain , W. ~Ikegami Andersson , W. ~Imoehl , M. ~Irshad , S. ~Jaeger , S. ~Janchiv , Q. ~Ji , Q. ~P. ~Ji , X. ~B. ~Ji , X. ~L. ~Ji , H. ~B. ~Jiang , X. ~S. ~Jiang , X. ~Y. ~Jiang , J. ~B. ~Jiao , Z. ~Jiao , D. ~P. ~Jin , S. ~Jin , Y. ~Jin , T. ~Johansson , N. ~Kalantar-Nayestanaki , X. ~S. ~Kang , R. ~Kappert , M. ~Kavatsyuk , B. ~C. ~Ke , I. ~K. ~Keshk , A. ~Khoukaz , P. ~Kiese , R. ~Kiuchi , R. ~Kliemt , L. ~Koch , O. ~B. ~Kolcu , B. ~Kopf , M. ~Kuemmel , M. ~Kuessner , A. ~Kupsc , M. ~ G. ~Kurth , W. ~Kühn , J. ~J. ~Lane , J. ~S. ~Lange , P. ~Larin , L. ~Lavezzi , H. ~Leithoff , M. ~Lellmann , T. ~Lenz , C. ~Li , C. ~H. ~Li , Cheng~Li , D. ~M. ~Li , F. ~Li , G. ~Li , H. ~B. ~Li , H. ~J. ~Li , J. ~C. ~Li , J. ~L. ~Li , Ke~Li , L. ~K. ~Li , Lei~Li , P. ~L. ~Li , P. ~R. ~Li , S. ~Y. ~Li , W. ~D. ~Li , W. ~G. ~Li , X. ~H. ~Li , X. ~L. ~Li 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Study of Time-Dependent CP Asymmetries with Partial Reconstruction of B -> D*+ pi-

We present a preliminary measurement of the time-dependent CP asymmetries in decays of neutral B mesons to the final states D*pi using approximately 82 million BBbar events collected by the BaBar experiment at the PEPII storage ring. Events…

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

Improved Bhabha cross section at LEP and the number of light neutrino species

In $\rm e^+ \rm e^-$ collisions, the integrated luminosity is generally measured from the rate of low-angle Bhabha interactions $\rm e^+ e^- \to e^+ e^- $. In the published LEP results, the inferred theoretical uncertainty of $\pm 0.061\%$…

High Energy Physics - Phenomenology · Physics 2020-02-28 Patrick Janot , Stanisław Jadach