The whitehead squares [l2i − 1, l2i − 1] ϵ π2i + 1 − 3(S2i − 1) are projective

1 1/Nc and ε ′ /ε ∗

We present a recent analysis of ε′/ε in the 1/Nc expansion. We show that the 1/Nc corrections to the matrix element of Q6 are large and positive, indicating a ∆I = 1/2 enhancement similar to the one of Q1 and Q2 which dominate the CP conserving amplitude. This enhances the CP ratio and can bring the standard model prediction close to the measured value for central values of the parameters. Seve...

Persian-translation Vol.1, No.1

Cover & Priliminary Pages ( 1 st.Year No.1)

Cover Vol.1, No.1, April 2004

1 Projective Geometry

Figure 1.2: Sextant is used to measure the angle between star/moon/sun and horizon. Imaging that you are located at the green point in Figure 1.1. It is possible to identify the location by knowing the projected location of the zenith—the point in the sky or celestial sphere directly above an observer—onto the earth surface given time. However, this is challenging because reliably identifying t...