Academic Journal
Precision measurement of the ratio BR(K-S -> pi(+)pi(-)e(+)e(-))/BR(K-L -> pi(+)pi(-)pi(0)(D))
| العنوان: | Precision measurement of the ratio BR(K-S -> pi(+)pi(-)e(+)e(-))/BR(K-L -> pi(+)pi(-)pi(0)(D)) |
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| المؤلفون: | Batley JR, Kalmus GE, Lazzeroni C, Munday DJ, Patel M, Slater MW, Wotton SA, Arcidiacono Roberta, Bocquet G, Ceccucci A, Cundy D, Doble N, Falaleev V, Gatignon L, Gonidec A, Grafstrom R, Kubischta W, Marchetto Flavio Pietro, Mikulec I, Norton Alan Robert, Panzer Steindel B, Rubin P, Wahl Heinrich, Goudzovski E, Hristov P, Kekelidze V, Kozhuharov V, Litov L, Madigozhin D, Molokanova N, Potrebenikov Y, Stoynev S, Zinchenko A, Monnier E, Swallow EC, Winston R, Sacco R, Walker A, Baldini Wander, Dalpiaz Pietro, Frabetti Pierluigi, Gianoli Alberto, Martini Marco, Petrucci Fabrizio, Savrie M, Scarpa Marcella, Calvetti Mario, Collazuol Gianmaria, Iacopini Enrico, Ruggiero Giuseppe, Bizzeti Andrea, Lenti Massimo, Behler M, Eppard K, Eppard M, Hirstius A, Kleinknecht K, Koch U, Marouelli P, Masetti L, Moosbrugger U, Morales CM, Peters A, Wanke R, Winhart A, Dabrowski A, Martin TF, Szleper M, Velasco M, Anzivino Giuseppina, Imbergamo Ermanno, Lamanna Gianluca, Lubrano Pasquale, Michetti Andrea, Nappi Aniello, Piccini Mauro, Valdata Nappi M, Cenci Patrizia, Pepe Monica, Petrucci Maria Carmela, Cerri Claudio, Fantechi Riccardo, Mannelli Italo, Costantini Flavio, Fiorini Luca, Giudici Sergio, Pierazzini Giuseppe, Sozzi Marco, Cheshkov C, Cheze JB, De Beer M, Debu P, Gouge G, Marel G, Mazzucato E, Peyaud B, Vallage B, Holder M, Maier A, Ziolkowski M, Biino Cristina, Cartiglia Nicolo', Clemencic Marco, Goy Lopez Silvia, Menichetti Ezio, Pastrone Nadia, Wislicki W, Dibon H, Jeitler M, Markytan M, Neuhofer G, Widhalm L., VELTRI, MICHELE |
| المساهمون: | Batley, Jr, Kalmus, Ge, Lazzeroni, C, Munday, Dj, Patel, M, Slater, Mw, Wotton, Sa, Arcidiacono, Roberta, Bocquet, G, Ceccucci, A, Cundy, D, Doble, N, Falaleev, V, Gatignon, L, Gonidec, A, Grafstrom, R, Kubischta, W, Marchetto Flavio, Pietro, Mikulec, I, Norton Alan, Robert, Panzer Steindel, B, Rubin, P, Wahl, Heinrich, Goudzovski, E, Hristov, P, Kekelidze, V, Kozhuharov, V, Litov, L, Madigozhin, D, Molokanova, N, Potrebenikov, Y, Stoynev, S, Zinchenko, A, Monnier, E, Swallow, Ec, Winston, R, Sacco, R, Walker, A, Baldini, Wander, Dalpiaz, Pietro, Frabetti, Pierluigi, Gianoli, Alberto, Martini, Marco, Petrucci, Fabrizio, Savrie, M, Scarpa, Marcella, Calvetti, Mario, Collazuol, Gianmaria, Iacopini, Enrico, Ruggiero, Giuseppe, Bizzeti, Andrea, Lenti, Massimo, Veltri, Michele, Behler, M, Eppard, K, Eppard, M, Hirstius, A, Kleinknecht, K, Koch, U, Marouelli, P, Masetti, L, Moosbrugger, U, Morales, Cm, Peters, A, Wanke, R, Winhart, A, Dabrowski, A, Martin, Tf, Szleper, M, Velasco, M, Anzivino, Giuseppina, Imbergamo, Ermanno, Lamanna, Gianluca, Lubrano, Pasquale, Michetti, Andrea, Nappi, Aniello, Piccini, Mauro, Valdata Nappi, M, Cenci, Patrizia, Pepe, Monica, Petrucci Maria, Carmela, Cerri, Claudio, Fantechi, Riccardo, Mannelli, Italo, Costantini, Flavio, Fiorini, Luca, Giudici, Sergio, Pierazzini, Giuseppe, Sozzi, Marco, Cheshkov, C, Cheze, Jb, De Beer, M, Debu, P, Gouge, G, Marel, G, Mazzucato, E, Peyaud, B, Vallage, B, Holder, M, Maier, A |
| سنة النشر: | 2011 |
| المجموعة: | Università degli Studi di Urbino: CINECA IRIS |
| الوصف: | The K-S -> pi(+)pi(-)e(+)e(-) decay mode was investigated using the data collected in 2002 by the NA48/1 Collaboration. With about 23 k K-S -> pi(+)pi(-)e(+)e(-) events and 59 k K-L -> pi(+)pi(-)pi(0)(D) normalization decays, the K-S -> pi(+)pi(-)e(+)e(-) branching ratio relative to the K-L -> pi(+)pi(-)pi(0)(D) one was determined to be BR(K-S -> pi(+)pi(-)e(+)e(-))/BR(K-L -> pi(+)pi(-)pi(0)(D)) = (3.28 +/- 0.06(stat) +/- 0.04(syst)) x 10(-2). This result was used to set the upper limit vertical bar g(E1)/g(BR)vertical bar < 3.0 at 90% CL on the presence, in the decay amplitude, of an E1 direct emission (g(E1)) term relative to the dominant inner bremsstrahlung (g(BR)) term. The CP-violating asymmetry A(phi) in the sin phi cos phi distribution of K-S -> pi(+)pi(-)e(+)e(-) events, where phi is the angle between the pi(+)pi(-) and the e(+)e(-) decay planes in the kaon centre of mass, was found to be A(phi) = (-0.4 +/- 0.8)%, consistent with zero. These results are in good agreement with a description of the K-S -> pi(+)pi(-)e(+)e(-) decay amplitude dominated by the CF-even inner bremsstrahlung process. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:000286494700005; volume:694; firstpage:301; lastpage:309; numberofpages:9; journal:PHYSICS LETTERS. SECTION B; http://hdl.handle.net/11576/2526176; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-78650304775 |
| DOI: | 10.1016/j.physletb.2010.10.008 |
| الاتاحة: | http://hdl.handle.net/11576/2526176 https://doi.org/10.1016/j.physletb.2010.10.008 |
| رقم الانضمام: | edsbas.C490050 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.physletb.2010.10.008 |
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