Measurement of the absolute branching ratio of the K+ -%26gt; pi(+) pi(-) pi(+) (gamma) decay with the KLOE detector

作者：Babuscih D; Balwierz Pytkog I; Bencivenni G; Bloise C; Bossi F; Branchinir P; Budano A; Balkestahl L Caldeira; Ceradini F; Ciambrone P; Curciarello F; Czerwinski E; Dane E; De Leo V; De Lucia E; De Robertis G; De Santis A; De Simone P^*; Di Cicco A; Di Domenico A; Di Salvo R; Domenici D; Erriquez O; Fanizzi G; Fantini A; Felici G; Fiore S; Franzini P; Gajos A; Gauzzi P; Giardina G; Giovannella S; Graziani E; Happacher F

来源：Physics Letters B, 2014, 738: 128-133.

DOI：10.1016/j.physletb.2014.09.033

• e(+) e(-) experiments
• Kaon decays

The absolute branching ratio of the K+ -%26gt; pi(+) pi(-) pi(+) (gamma) decay, inclusive of final-state radiation, has been measured using similar to 17 million tagged K+ mesons collected with the KLOE detector at DA Phi NE, the Frascati phi-factory. The result is: %26lt;br%26gt;BR(K+ -%26gt; pi(+) pi(-) pi(+) (gamma)) = 0.05565 +/- 0.00031(stat) +/- 0.00025(syst) %26lt;br%26gt;a factor similar or equal to 5 more precise with respect to the previous result. This work completes the program of precision measurements of the dominant kaon branching ratios at KLOE.

• 出版日期2014-11-10