1. DIRAC experiment and test of low-energy QCD
- Author
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Pentia, M., Adeva, B., Afanasev, L., Benayoun, Maurice, Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Constantinescu, S., Doudarev, A., Dreossi, D., Drijard, D., Ferro-Luzzi, M., Gallas Torreira, T., Gerndt, J., Giacomich, R., Gianotti, P., Gomez, F., Gorin, A., Gortchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Kalinina, N., Karpoukhine, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Koulikov, A., Kouptsov, A., Krouglov, V., Krouglova, L., Kuroda, K. I., Lanaro, A., Lapshine, V., Richard Lednicky, Leruste, P., Levi Sandri, P., Lopez Aguera, A., Lucherini, V., Maki, T., Manuilov, I., Montanet, L., Narjoux, J. L., Nemenov, L., Nikitin, M., Nunez Pardo, T., Okada, K., Olchevsky, V., Pazos, A., Penti, M., Penzo, A., Perreau, J. M., Petrascu, C., Plo, M., Ponta, T., Pop, D., Riazantsev, A., Rodriguez, J. M., Rodriguez Fernandez, A., Rykaline, V., Santamarina, C., Schacher, J., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Trusov, Sergey V., Vazquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., and Zrelov, P.
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Particle Physics - Phenomenology - Abstract
The low-energy QCD predictions to be tested by the DIRAC experiment are revised. The experimental method, the setup characteristics and capabilities, along with first experimental results are reported. Preliminary analysis shows good detector performance: alignment error via $\Lambda$ mass measurement $m_\Lambda = 1115.6 MeV/c^2$ with $\sigma = 0.92 MeV/c^2$, $p \pi^-$ relative momentum resolution $\sigma_Q \approx 2.7 MeV/c$, and evidence for $\pi^+ The low-energy QCD predictions to be tested by the DIRAC experiment are revised. The experimental method, the setup characteristics and capabilities, along with first experimental results are reported. Preliminary analysis shows good detector performance: alignment error via $\Lambda$ mass measurement $m_\Lambda = 1115.6 MeV/c^2$ with $\sigma = 0.92 MeV/c^2$, $p \pi^-$ relative momentum resolution $\sigma_Q \approx 2.7 MeV/c$, and evidence for $\pi^+ \pi^-$ low momentum Coulomb correlation.