You have full rights in your father's intestate properties as your brother and other legal heirs have.
Your interests and rights in the properties cannot be denied by your brother or any other heir to your deceased father.
Being a legal heir you have an equal share in line with other legal heirs of your deceased father.
If your brother is not agreeing or willing to partition and allot you with your respective share in an amicable manner, you cannot get that through any process including arbitration etc.
Approaching an arbitrator through law will be after you have approached the court with a litigation.
Your case, if both parties agree for compromise and settlement shall be referred to mediation or alternate dispute relief centre for counselling and mediation for a compromise or amicable settlement. For this you should have approached the court with a litigation or dispute.
Whatever efforts you may try to initiate but if your unwilling brother is not cooperating, you dont have any choice than to approach court with a suit for partition.