التفاصيل البيبلوغرافية
العنوان:
Determination of $\pi\pi$ scattering lengths from measurement of $\pi^+\pi^-$ atom lifetime
المؤلفون:
Adeva, B. , Afanasyev, L. , Benayoun, M. , Benelli, A. , Berka, Z. , Brekhovskikh, V. , Caragheorgheopol, G. , Cechak, T. , Chiba, M. , Chliapnikov, P. V. , Ciocarlan, C. , Constantinescu, S. , Costantini, S. , Curceanu, C. , Doskarova, P. , Dreossi, D. , Drijard, D. , Dudarev, A. , Ferro-Luzzi, M. , Pazos, J. L. Fungueiriño , Torreira, M. Gallas , Gerndt, J. , Gianotti, P. , Goldin, D. , Gomez, F. , Gorin, A. , Gorchakov, O. , Guaraldo, C. , Gugiu, M. , Hansroul, M. , Hons, Z. , Hosek, R. , Iliescu, M. , Karpukhin, V. , Kluson, J. , Kobayashi, M. , Kokkas, P. , Komarov, V. , Kruglov, V. , Kruglova, L. , Kulikov, A. , Kuptsov, A. , Kuroda, K. I. , Lamberto, A. , Lanaro, A. , Lapshin, V. , Lednicky, R. , Leruste, P. , Sandri, P. Levi , Aguera, A. Lopez , Lucherini, V. , Maki, T. , Manuilov, I. , Marin, J. , Narjoux, J. L. , Nemenov, L. , Nikitin, M. , Pardo, T. Nunez , Okada, K. , Olchevskii, V. , Pazos, A. , Pentia, M. , Penzo, A. , Perreau, J. M. , Plo, M. , Ponta, T. , Rappazzo, G. F. , Riazantsev, A. , Rodriguez, J. M. , Fernandez, A. Rodriguez , Vidal, A. Romero , Ronjin, V. M. , Rykalin, V. , Saborido, J. , Santamarina, C. , Schacher, J. , Schuetz, C. , Sidorov, A. , Smolik, J. , Takeutchi, F. , Tarasov, A. , Tauscher, L. , Tobar, M. J. , Trojek, T. , Trusov, S. , Utkin, V. , Doce, O. Vázquez , Vlachos, S. , Voskresenskaya, O. , Vrba, T. , Willmott, C. , Yazkov, V. , Yoshimura, Y. , Zhabitsky, M. , Zrelov, P.
المصدر:
Physics Letters B 704 (2011) 24
سنة النشر:
2011
المجموعة:
High Energy Physics - Experiment High Energy Physics - Phenomenology
مصطلحات موضوعية:
High Energy Physics - Experiment , High Energy Physics - Phenomenology
الوصف:
The DIRAC experiment at CERN has achieved a sizeable production of $\pi^+\pi^-$ atoms and has significantly improved the precision on its lifetime determination. From a sample of 21227 atomic pairs, a 4% measurement of the S-wave $\pi\pi$ scattering length difference $|a_0-a_2| = (.0.2533^{+0.0080}_{-0.0078}|_\mathrm{stat}.{}^{+0.0078}_{-0.0073}|_\mathrm{syst})M_{\pi^+}^{-1}$ has been attained, providing an important test of Chiral Perturbation Theory. Comment: 6 pages, 6 figures
نوع الوثيقة:
Working Paper
DOI:
10.1016/j.physletb.2011.08.074
الوصول الحر:
http://arxiv.org/abs/1109.0569Test
رقم الانضمام:
edsarx.1109.0569
قاعدة البيانات:
arXiv