If love, sadness and joy can be perceived by our senses, then they would be tangibles according to the definition you posted.

On your question

There's no difference to me. My hope of going to heaven if I do good things is no different than my hope of winning a lottery if I buy enough tickets. People can call it blasphemous to equate a lottery to heaven but as far as I'm concerned, all do-A-get-B concepts that work off blind faith fire off the same neurons in the mind.

Again, as long as anger, sadness, and hope can be felt, the first criteria of tangibility you posted is satisfied so emotions are 'real' in that regard. Now, can God be felt? Not to me. There is no emotion called God. Neither is it a force of gravity, heat or electricity that can be felt. For an all-powerful always present superbeing that promises to pulverize you for being disobedient, it is extremely shy. It doesn't satisfy any criteria of tangibility that I know.

If you don't want anything about religion here in this topic, it's gonna be hard when you ot the word God appearing 9 times in the original post.

Yes there will always be physical phenomena that's beyond the range of our physical senses but they're existence can be mathematically proven like the black holes and dark matter. We cannot see them but they leave measurable trails like gravity from which we infer their existence, even their mass. Can emotion be calculated and weighed? Hard to imagine.

Drug effects prove the strong link between consciousness and the biological brain, but hormones create them or they create hormones, I'm unsure. Adrenalin is produced by our system when we experience intense fear so it seems to me that such chemicals are an effect of emotion, not a cause.