Related papers: Progress on R measurement through ISR with BaBar

Study of psi(2S) decays to X J/psi

Using J/psi -> mu^+ mu^- decays from a sample of approximately 4 million psi(2S) events collected with the BESI detector, the branching fractions of psi(2S) -> eta J/psi, pi^0 pi^0 J/psi, and anything J/psi normalized to that of psi(2S) ->…

High Energy Physics - Experiment · Physics 2008-11-26 BES Collaboration , M. Ablikim

$\Psi(2S)$ decay to $J/\Psi(1S)$ +2$\pi$ or $J/\Psi(1S)$ + $\sigma$ + 2$\pi$

The BES Collaboration has measured $\Psi(2S)$ decay to $J/\Psi \pi^+\pi^-$. Using the mixed hybrid theory for the $\Psi(2S)$ we estimate the decay to $J/\Psi(1S)$ + $\sigma$. Using the known $\sigma \rightarrow 2\pi$ coupling constant, we…

High Energy Physics - Phenomenology · Physics 2020-05-18 Leonard S. Kisslinger , Li-juan Zhou , Wei-xing Ma

Partial wave analyses of J/psi to gamma pi^+ pi^- and gamma pi^0 pi^0

Results are presented on J/psi radiative decays to pi^+pi^- and pi^0pi^0 based on a sample of 58M J/psi events taken with the BESII detector. Partial wave analyses are carried out using the relativistic covariant tensor amplitude method in…

High Energy Physics - Experiment · Physics 2010-03-19 M. Ablikim

The $e^+ e^-\to 2(\pi^+\pi^-)\pi^0$, 2(\pi^+\pi^-)\eta$, $K^+ K^-\pi^+\pi^-\pi^0$ and $K^+ K^-\pi^+\pi^-\eta$ Cross Sections Measured with Initial-State Radiation

We study the processes $e^+ e^-\to 2(\pi^+\pi^-)\pi^0\gamma$, $2(\pi^+\pi^-)\eta\gamma$, $K^+ K^-\pi^+\pi^-\pi^0\gamma$ and $K^+ K^-\pi^+\pi^-\eta\gamma$ with the hard photon radiated from the initial state. About 20000, 4300, 5500 and 375…

High Energy Physics - Experiment · Physics 2014-11-18 The BABAR Collaboration , B. Aubert

Observation and study of baryonic B decays: B -> D(*) p pbar, D(*) p pbar pi, and D(*) p pbar pi pi

We present a study of ten B-meson decays to a D(*), a proton-antiproton pair, and a system of up to two pions using BaBar's data set of 455x10^6 BBbar pairs. Four of the modes (B0bar -> D0 p anti-p, B0bar -> D*0 p anti-p, B0bar -> D+ p…

High Energy Physics - Experiment · Physics 2012-06-18 The BABAR Collaboration , B. Aubert

Study of the K+ pi+ pi- Final State in B+ -> J/psi K+ pi+ pi- and B+ -> psi-prime K+ pi+ pi-

Using 535 x 10^6 B-meson pairs collected by the Belle detector at the KEKB e+ e- collider, we measure branching fractions of (7.16 +/- 0.10(stat) +/- 0.60(syst)) x 10^-4 for B+ -> J/psi K+ pi+ pi- and (4.31 +/- 0.20(stat) +/- 0.50(syst)) x…

High Energy Physics - Experiment · Physics 2011-02-18 H. Guler et al.

Search for B0 -> K*+ K*-

We report the results of a search for the decay B0 -> K*+ K*- with a sample of 454 +/- 5 million BBbar pairs collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at the Stanford Linear Accelerator Center. We…

High Energy Physics - Experiment · Physics 2010-04-12 The BABAR Collaboration , B. Aubert

Measurement of the CKM angles alpha and gamma at the BaBar experiment

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

First measurements of J/Psi decays into $\Sigma^+ \bar{\Sigma}^-$ and $\Xi^0 \bar{\Xi}^0$

Based on 58 million J/Psi events collected with the BESII detector at the BEPC, the baryon pair processes J/Psi to $\Sigma^+ \bar{\Sigma}^-$ and J/Psi to $\Xi^0 \bar{\Xi}^0$ are observed for the first time. The branching fractions are…

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

Spin-Parity Analysis of ppbar Mass Threshold Structure in J/psi and psi' Radiative Decays

A partial wave analysis of the $p \bar{p}$ mass-threshold enhancement in the reaction $J/\psi\rightarrow\gamma p\bar{p}$ is used to determine: its $J^{PC}$ quantum numbers to be $0^{-+}$; its peak mass to be below threshold at…

High Energy Physics - Experiment · Physics 2013-05-30 BESIII Collaboration

Ambiguity-Free Measurement of cos2beta: Time-Integrated and Time-Dependent Angular Analyses of B->J/Psi K pi

We present results on $B\to J/\psi\xspace K\pi$ decays using $e^+e^-$ annihilation data collected with the BABAR detector at the $\Upsilon(4S)$ resonance. The detector is located at the PEP-II asymmetric-energy storage ring facility at the…

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

Search for the Z(4430)^- at BABAR

We report the results of a search for $Z(4430)^-$ decay to $J/\psi\pi^-$ or $\psi(2S)\pi^-$ in $B^{-,0}\to \jpsi\pi^- K^{0,+}$ and $B^{-,0}\to \psitwos \pi^- K^{0,+}$ decays. The data were collected with the BABAR detector at the SLAC…

High Energy Physics - Experiment · Physics 2010-04-12 The BABAR Collaboration , B. Aubert

Study of the P-wave charmonium state \chi_{cJ} in \psi(2S) decays

The processes $\psi(2S)\to \gamma \pi^+ \pi^-$, $\gamma K^+ K^-$ and $\gamma p \bar{p}$ have been studied using a sample of $3.7 \times 10^6$ produced $\psi(2S)$ decays. We determine the total width of the $\chi_{c0}$ to be…

High Energy Physics - Experiment · Physics 2008-11-26 J. Z. Bai

Measurement of Decay Amplitudes of B -->(c cbar) Kstar with an Angular Analysis, for (c cbar)=J/psi, psi(2S) and chi_c1

We perform the first three-dimensional measurement of the amplitudes of $B\to \psi(2S) K^*$ and $B\to \chi_{c1} K^*$ decays and update our previous measurement for $B\to J/\psi K^*$. We use a data sample collected with the BaBar detector at…

High Energy Physics - Experiment · Physics 2010-04-12 The BABAR Collaboration , B. Aubert

Measurement of the Branching Fraction of J/psi --> pi+ pi- pi0

Using 58 million J/psi and 14 million psi' decays obtained by the BESII experiment, the branching fraction of J/psi --> pi+ pi- pi0 is determined. The result is (2.10+/-0.12)X10^{-2}, which is significantly higher than previous…

High Energy Physics - Experiment · Physics 2008-11-26 J. Z. Bai

Measurements of sin2Beta and cos2Beta from b --> ccbars decays at BaBar

Recent measurements of sin2Beta and cos2Beta using b --> ccbars decays are presented using data collected by the BaBar experiment at the PEP-II asymmetric-energy B-factory.

High Energy Physics - Experiment · Physics 2007-05-23 Katherine A. George

Measurements of branching fractions and CP-violating asymmetries in B0 -> pi+pi-, K+pi-, K+K- decays

We present updated measurements of branching fractions and CP-violating asymmetries for neutral B meson decays to two-body final states of charged pions and kaons. The results are obtained from a data sample of about 60 million Y(4S) to BB…

High Energy Physics - Experiment · Physics 2007-05-23 P. D. Dauncey

Observation of B Meson Decays to eta pi and eta K

We present preliminary measurements of the B meson decays B+->etapi+, B+->etaK+, and B0->etaK0. The data were recorded with the BABAR detector at PEP II and correspond to 88.9 million BBbar pairs produced in e+e- annihilation through the…

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

Search for b-> u transitions in B0 -> D0 K*0 decays

We present a study of the decays B0 -> D0 K*0 and B0 -> barD0 K*0 with K*0 -> K+pi-. The D0 and the barD0 mesons are reconstructed in the final states f=K+pi-, K+pi-pi0, K+pi-pi+pi- and their charge conjugates. Using a sample of 465 million…

High Energy Physics - Experiment · Physics 2010-04-12 The BABAR Collaboration , B. Aubert

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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