Related papers: High statistics study of the K- -> pi0 e- nu decay

Study of the K- -> pi0 e- nu decay

The decay K- -> pi0 e- nu has been studied using in-flight decays detected with "ISTRA+" setup operating at the 25 GeV negative secondary beam of the U-70 PS. About 130K events were used for the analysis. The lambda_+ parameter of the…

High Energy Physics - Experiment · Physics 2008-11-26 I. Ajinenko , S. Akimenko , G. Akopdzhanov , K. Belous , I. Britvich , G. Britvich , A. Filin , V. Govorun , A. Inyakin , V. Konstantinov , A. Konstantinov , I. Korolkov , V. Khmelnikov , V. Leontiev , V. Novikov , V. Obraztsov , V. Polyakov , V. Romanovsky , V. Ronjin , V. Senko , N. Shalanda , M. Shapkin , V. Shelikhov , N. Smirnov , A. Sokolov , O. Tchikilev , E. Vlasov , O. Yushchenko , V. Bolotov , S. Laptev , A. Polyarush , V. Postoev , S. Yaschenko , B. Zalikhanov , V. Serdyuk

High statistic study of the K- -> pi0 mu- nu decay

The decay K- -> pi0 mu- nu has been studied using in-flight decays detected with the "ISTRA+" spectrometer. About 540K events were collected for the analysis. The lambda+ and lambda0 slope parameters of the decay form-factors f+(t), f0(t)…

High Energy Physics - Experiment · Physics 2008-11-26 O. P. Yushchenko , S. A. Akimenko , K. S. Belous , G. I. Britvich , I. G. Britvich , K. V. Datsko , A. P. Filin , A. V. Inyakin , A. S. Konstantinov , V. F. Konstantinov , I. Y. Korolkov , V. A. Khmelnikov , V. M. Leontiev , V. P. Novikov , V. F. Obraztsov , V. A. Polyakov , V. I. Romanovsky , V. M. Ronjin , V. I. Shelikhov , N. E. Smirnov , O. G. Tchikilev , V. A. Uvarov , V. N. Bolotov , S. V. Laptev , A. R. Pastsjak , A. Yu. Polyarush

Study of the K- -> mu- nu pi0 decay

The decay $K^{-} \to \mu^{-} \bar{\nu} \pi^{0}$ has been studied using in-flight decays detected with ``ISTRA+'' setup operating in the 25 GeV negative secondary beam of the U-70 PS. About 112K events were used for the analysis. The…

High Energy Physics - Phenomenology · Physics 2008-11-26 I. Ajinenko , S. Akimenko , G. Britvich , I. Britvich , K. Datsko , A. Filin , A. Inyakin , A. Konstantinov , V. Konstantinov , I. Korolkov , V. Leontiev , V. Novikov , V. Obraztsov , V. Polyakov , V. Romanovsky , V. Shelikhov , N. Smirnov , M. Soldatov , O. Tchikilev , E. Usenko , M. Vasiliev , E. Vlasov , V. Yakimchuk , O. Yushchenko , V. Bolotov , S. Laptev , V. Lebedev , A. Pastsjak , A. Polyarush , R. Sirodeev

High statistic measurement of the K- -> pi0 e- nu decay form-factors

The decay K- -> pi0 e- nu is studied using in-flight decays detected with the ISTRA+ spectrometer. About 920K events are collected for the analysis. The lambda+ slope parameter of the decay form-factor f+(t) in the linear approximation…

High Energy Physics - Experiment · Physics 2008-11-26 O. P. Yushchenko , S. A. Akimenko , G. I. Britvich , K. V. Datsko , A. P. Filin , A. V. Inyakin , A. S. Konstantinov , V. F. Konstantinov , I. Y. Korolkov , V. A. Khmelnikov , V. M. Leontiev , V. P. Novikov , V. F. Obraztsov , V. A. Polyakov , V. I. Romanovsky , V. M. Ronjin , V. I. Shelikhov , N. E. Smirnov , O. G. Tchikilev , V. A. Uvarov , V. N. Bolotov , S. V. Laptev , A. Yu. Polyarush

Measurement of the Dalitz plot slope parameters for K- -> pi0 pi0 pi- decay using ISTRA+ detector

The Dalitz plot slope parameters g, h and k for the K- -> pi0 pi0 pi- decay have been measured using in-flight decays detected with the ISTRA+ setup operating in the 25 GeV negative secondary beam of the U-70 PS. About 252 K events with…

High Energy Physics - Experiment · Physics 2008-11-26 I. V. Ajinenko , S. A. Akimenko , G. I. Britvich , K. V. Datsko , A. P. Filin , A. V. Inyakin , A. S. Konstantinov , V. F. Konstantinov , I. Y. Korolkov , V. M. Leontiev , V. P. Novikov , V. F. Obraztsov , V. A. Polyakov , V. I. Romanovsky , V. I. Shelikhov , N. E. Smirnov , O. G. Tchikilev , V. A. Uvarov , O. P. Yushchenko , V. N. Bolotov , S. V. Laptev , A. R. Pastsjak , A. Yu. Polyarush , R. Kh. Sirodeev

Measurement of K^{-}_{e3} branching ratio

The branching fraction for the decay $K^{-} \to \pi^{0} e \bar \nu$ is measured using in-flight decays detected with {\bf ISTRA+} setup working at the 25 GeV negative secondary beam of the U-70 PS:\linebreak $Br_{K_{e3}}= (5.124 \pm 0.009…

High Energy Physics - Experiment · Physics 2007-05-23 V. I. Romanovsky , S. A. Akimenko , G. I. Britvich , K. V. Datsko , A. P. Filin , A. V. Inyakin , A. S. Konstantinov , I. Y. Korolkov , V. A. Khmelnikov , V. M. Leontiev , V. P. Novikov , V. F. Obraztsov , V. A. Polyakov , V. I. Shelikhov , O. G. Tchikilev , V. A. Uvarov , O. P. Yushchenko , V. N. Bolotov , V. A. Duk , S. V. Laptev , A. Yu. Polyarush

Experimental study of direct photon emission in K- --> pi- pi0 gamma decay using ISTRA+ detector

The branching ratio in the charged-pion kinetic energy region of 55 to 90 MeV for the direct photon emission in the K- --> pi- pi0 gamma decay has been measured using in-flight decays detected with the ISTRA+ setup operating in the 25 GeV/c…

High Energy Physics - Experiment · Physics 2008-11-26 V. A. Uvarov , S. A. Akimenko , G. I. Britvich , K. V. Datsko , A. P. Filin , A. V. Inyakin , V. A. Khmelnikov , A. S. Konstantinov , V. F. Konstantinov , I. Y. Korolkov , V. M. Leontiev , V. P. Novikov , V. F. Obraztsov , V. A. Polyakov , V. I. Romanovsky , V. M. Ronjin , V. I. Shelikhov , N. E. Smirnov , O. G. Tchikilev , O. P. Yushchenko , V. N. Bolotov , V. A. Duk , S. V. Laptev , A. Yu. Polyarush

Study of K- -> pi0 e nu gamma decay with ISTRA+ setup

Results of study of the radiative kaon decay K-->pi0 e nu gamma at ISTRA+ setup are presented. 4476 events of this decay have been observed. The branching ratio is measured.

High Energy Physics - Experiment · Physics 2020-10-19 V. N. Bolotov , E. N. Guschin , V. A. Duk , S. V. Laptev , V. A. Lebedev , A. E. Mazurov , A. Yu. Polyarush , V. E. Postoev , S. A. Akimenko , G. I. Britvich , K. V. Datsko , A. P. Filin , A. V. Inyakin , V. F. Konstantinov , A. S. Konstantinov , I. Y. Korolkov , V. A. Khmelnikov , V. M. Leontiev , V. P. Novikov , V. F. Obraztsov , V. A. Polyakov , V. I. Romanovsky , V. I. Shelikhov , O. G. Tchikilev , V. A. Uvarov , O. P. Yushchenko

A new measurement of the properties of the rare decay K -> pi+ e+ e-

A large low-background sample of events (10300) has been collected for the rare decay of kaons in flight K+ -> pi+ e+ e- by experiment E865 at the Brookhaven AGS. The decay products were accepted by a broad band high-resolution charged…

High Energy Physics - Experiment · Physics 2008-11-26 R. Appel

K pi vector form factor, dispersive constraints and tau -> nu_tau K pi decays

Recent experimental data for the differential decay distribution of the decay $\tau^-\to\nu_\tau K_S\pi^-$ by the Belle collaboration are described by a theoretical model which is composed of the contributing vector and scalar form factors…

High Energy Physics - Phenomenology · Physics 2009-02-27 Diogo R. Boito , Rafel Escribano , Matthias Jamin

Measurement of $K^+ \to \pi^0 \pi^0 e^+ \nu$ ($K_{e4}^{00}$) decay using stopped positive kaons

The $K^+ \to \pi^0 \pi^0 e^+ \nu$ ($K_{e4}^{00}$) decay has been measured with stopped positive kaons for a data sample of 216 events. A comparison of the observed spectra with a Monte Carlo simulation determined the $K_{e4}^{00}$ form…

High Energy Physics - Experiment · Physics 2008-11-26 S. Shimizu , K. Horie , M. Aliev , Y. Asano , T. Baker , P. Depommier , M. Hasinoff , Y. Igarashi , J. Imazato , A. P. Ivashkin , M. M. Khabibullin , A. N. Khotjantsev , Y. G. Kudenko , A. Levchenko , G. Y. Lim , J. A. Macdonald , O. V. Mineev , C. Rangacharyulu , S. Sawada

Test of exotic scalar and tensor interactions in K_e3 decay using stopped positive kaons

The form factors of the decay K+ --> pi0 e+ nu (K_e3) have been determined from the comparison of the experimental and Monte Carlo Dalitz distributions containing about 10^5 K_e3 events. The following values of the parameters were obtained:…

High Energy Physics - Experiment · Physics 2011-01-20 A. S. Levchenko

Measurement of the branching ratio of pi^0 -> e^+e^- using K_L -> 3 pi^0 decays in flight

The branching ratio of the rare decay pi^0 -> e^+e^- has been measured in E799-II, a rare kaon decay experiment using the KTeV detector at Fermilab. The pi^0's were produced in fully-reconstructed K_L -> 3 pi^0 decays in flight. We observed…

High Energy Physics - Experiment · Physics 2008-11-26 KTeV Collaboration

Study of the decay Ds+ --> K+ K- e+ nu

Using 214 fb-1 of data recorded by the Babar detector at the PEPII electron-positron collider, we study the decay Ds+ --> K+ K- e+ nu. Except for a small S-wave contribution, the events with K+K- masses in the range 1.01-1.03 GeV/c2…

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

The new $K_S \rightarrow \pi e \nu$ branching fraction measurement at KLOE

A new measurement of the branching fraction for the decay $K_S \rightarrow \pi e \nu$ is presented, based on a sample of 300 million $K_S$ mesons recorded by the KLOE experiment at the DA$\Phi$NE $e^+e^-$ collider. A two-step signal…

High Energy Physics - Experiment · Physics 2024-04-03 A. Passeri

Extraction of Kaon Formfactors from K^- -> mu^- nu_mu gamma Decay at ISTRA+ Setup

The radiative decay K->mu nu gamma has been studied at ISTRA+ setup in a new kinematical region. About 22K events of K^- -> mu^- nu_mu gamma have been observed. The sign and value of Fv-Fa have been measured for the first time. The result…

High Energy Physics - Experiment · Physics 2015-03-17 The ISTRA+ Collaboration , : , V. A. Duk , V. N. Bolotov , A. A. Khudyakov , V. A. Lebedev , A. I. Makarov , V. P. Novikov , A. Yu. Polyarush , S. A. Akimenko , G. I. Britvich , A. P. Filin , A. V. Inyakin , I. Ya. Korolkov , V. M. Leontiev , V. F. Obraztsov , V. A. Polyakov , V. I. Romanovsky , O. G. Tchikilev , V. A. Uvarov , O. P. Yushchenko

A search for the rare decay K+ -> pi+ nu nu

Recent results from the first phase of the E787 experiment and an update on the current status are presented. From the first phase the limit on the K+ -> pi+ nu nu (pnn) branching ratio is BR(pnn) < 2.4e-9 (90%CL). An observation of the…

High Energy Physics - Experiment · Physics 2007-05-23 Steve Kettell

High statistics measurement of Ke4 decay properties

We report experimental details and results of a new measurement of the decay K+ -> pi+pi-e+nue (Ke4}. A sample of more than 400,000 Ke4 events with low background has been collected by Experiment 865 at the Brookhaven Alternate Gradient…

High Energy Physics - Experiment · Physics 2008-11-26 S. Pislak , R. Appel , G. S. Atoyan , B. Bassalleck , D. R. Bergman , N. Cheung , S. Dhawan , H. Do , J. Egger , S. Eilerts , H. Fischer , W. Herold , V. V. Issakov , H. Kaspar , D. E. Kraus , D. M. Lazarus , P. Lichard , J. Lowe , J. Lozano , H. Ma , W. Majid , A. A. Poblaguev , P. Rehak , A. Sher , Aleksey Sher , J. A. Thompson , P. Truöl , M. E. Zeller

Observation of the destructive interference in the radiative kaon decay K- --> mu-nugamma

Using data collected with the ISTRA+ spectrometer at U70 proton synchrotron of IHEP, we report the first measurement of the destructive interference in the radiative kaon cecay K- -->mu-nugamma. We find the difference of the vector and…

High Energy Physics - Experiment · Physics 2010-01-05 O. Tchikilev , S. Akimenko , G. Britvich , A. Filin , A. Konstantinov , I. Korolkov , V. Leontiev , V. Obraztsov , V. Polyakov , V. Romanonovsky , V. Semenov , V. Uvarov , O. Yushchenko , V. Bolotov , V. Duk , A. Makarov , A. Khudiakov , V. Novikov A. Polyarush

Model Independent Measurement of Form Factors in the Decay D^+ --> K^- pi^+ e^+ nu_e

We present model independent measurements of the helicity basis form factors in the decay D+ -> K- pi+ e+ nu_e obtained from about 2800 decays reconstructed from a 281 pb^{-1} data sample collected at the psi(3770) center-of-mass energy…

High Energy Physics - Experiment · Physics 2010-04-08 M. R. Shepherd , CLEO Collaboration