Electromagetic Formfactor: pp->e⁺e^-

Convener

Frank Maas (GSI, Mainz)

Analyst

Maria Carmen Mora Espi (Mainz)

Decay Modes

pp->e⁺e^-,G_E=1 G_M, p_Beam=1.7 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=0 G_M, p_Beam=1.7 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=3 G_M, p_Beam=1.7 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=1 G_M, p_Beam=3.3 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=0 G_M, p_Beam=3.3 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=3 G_M, p_Beam=3.3 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=1 G_M, p_Beam=7.9 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=0 G_M, p_Beam=7.9 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=3 G_M, p_Beam=7.9 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=1 G_M, p_Beam=10.9 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=0 G_M, p_Beam=10.9 GeV/c, 10⁶ events;

pp->e⁺e^-,G_E=3 G_M, p_Beam=10.9 GeV/c, 10⁶ events;

A total of 1.2 10⁷ signal events is required

Background Channels

pp->π⁺π^-, p_Beam=1.7 GeV/c, 10⁶ events; no decay of π⁺π^-

pp->π⁺π^-, p_Beam=3.3 GeV/c, 10⁹ events; no decay of π⁺π^-

pp->π⁺π^-, p_Beam=7.9 GeV/c, 10⁹ events; no decay of π⁺π^-

pp->π⁺π^-, p_Beam=10.9 GeV/c, 10⁶ events; no decay of π⁺π^-

pp->π⁰π⁰, p_Beam=1.7 GeV/c, 10⁶ events; decay mode for both pions: π⁰ -> γγ

pp->π⁰π⁰, p_Beam=3.3 GeV/c, 10⁶ events; decay mode for both pions: π⁰ -> γγ

pp->π⁰π⁰, p_Beam=7.9 GeV/c, 10⁶ events; decay mode for both pions: π⁰ -> γγ

pp->π⁰π⁰, p_Beam=10.9 GeV/c, 10⁶ events; decay mode for both pions: π⁰ -> γγ

pp->π⁰π⁰, p_Beam=1.7 GeV/c, 10⁶ events; decay mode for both pions: π⁰ -> e⁺e^- γ

pp->π⁰π⁰, p_Beam=3.3 GeV/c, 10⁶ events; decay mode for both pions: π⁰ -> e⁺e^- γ

pp->π⁰π⁰, p_Beam=7.9 GeV/c, 10⁶ events; decay mode for both pions: π⁰ -> e⁺e^- γ

pp->π⁰π⁰, p_Beam=10.9 GeV/c, 10⁶ events; decay mode for both pions: π⁰ -> e⁺e^- γ

pp->μ⁺μ^-, G_E=1 G_M, p_Beam=1.7 GeV/c, 10⁶ events;

pp->μ⁺μ^-, G_E=1 G_M, p_Beam=3.3 GeV/c, 10⁶ events;

pp->μ⁺μ^-, G_E=1 G_M, p_Beam=7.9 GeV/c, 10⁶ events;

pp->μ⁺μ^-, G_E=1 G_M, p_Beam=10.9 GeV/c, 10⁶ events;

A total of 2.014 10⁹ background events is required

Documents

• PID_TAG_PidEMC_061211.pdf: Pid TAG Meeting @ GSI (11.12.2006)

• EplusEminusStudies.pdf: PID TAG Meeting @ Genoa (28.03.2007)

• EpEmStatus0707.pdf: PID TAG VRVS Meeting (14.07.2007)

• pb_softact_070919.pdf: PANDA Collaboration Meeting @ GSI (19.09.2007)

• PandaMeetingDic07_FINAL.pdf: GSI meeting Dec2007