Recent content by ozon

  1. O

    Are gluon lines drawn in opposite directions the same in Feynman diagrams?

    Thank you very much for your reply. Maybe this link is useful for you. http://www.insectnation.org/howto/academic-software
  2. O

    Are gluon lines drawn in opposite directions the same in Feynman diagrams?

    I draw Feynman diagrams in JaxoDraw. But If I draw gluon line up to down or down to up, I get different results for gluon lines. I share a picture to explain my problem. Are these two diagrams the same? http://img809.imageshack.us/img809/3184/rq9z.jpg
  3. O

    Why doesn't Ω¯ decay to Σ¯ plus π°(pion)?

    In David Griffiths' Introduction to Elemantary Particles book, Problem 1.8 makes me confused. It wants me to write possible decay modes of Ω¯. In the parentheses, there is an explanation.It says "The Ω¯ does in fact decay, but by the much slower weak interaction, which does not converse...
  4. O

    What is the equation for the area of a triangle in terms of its sides and angle?

    Your clue is very helpful for me. Thanks. It is very easy now. Area of triangle (1/2)h|V3|sin900=(1/2)|V1||V2|sinθ h|V3|=|V1xV2| h=(|V1xV2|)/|V3| Thank you everybody for your helping.
  5. O

    What is the equation for the area of a triangle in terms of its sides and angle?

    Ok. First way is not problem to find area of the triangle. But I do not know how to find area of the triangle with vectorial methods. I think second way is necessary to prove this equation. Thanks for your clues. But I need more than them.
  6. O

    What is the equation for the area of a triangle in terms of its sides and angle?

    Thanks but I do not have any idea.
  7. O

    What is the equation for the area of a triangle in terms of its sides and angle?

    Thanks. Yes, I have. But I can't solve it. h is norm of short distance between p0 and V3. So I have to use a new symbol for short distance. I want to call it as V4. h=|V4| |V4||V3|sin900=|V1xV2| V4xV3=|V1xV2| I have tried something but I have no idea. Some clues are very useful to prove...
  8. O

    What is the equation for the area of a triangle in terms of its sides and angle?

    Hello, I am new at this forum. Firstly, I want to say I am happy to be a member of this forum. English is not my native language. So I can make some grammar and other mistakes. I try to write with no mistakes. If I make mistakes for writing, I apologize. I have a question. You see a triangle...