"Physics would be far more interesting if it had not been found," Hawking said in a speech at the Science Museum here.
Last year's breakthrough detection of the Higgs boson came as something of a let-down for the 71-year-old world-renowned cosmologist, 'Metro.Co.Uk reported.
Hawking said that he had another reason to lament the discovery which brought a Nobel Prize for Professor Peter Higgs, the man who first proposed the 'God particle' theory.
"I had a bet with Gordon Kane of Michigan University that the Higgs particle wouldn't be found," Hawking said, adding "the Nobel Prize cost me USD 100."
The physicist was speaking to celebrate the launch of an exhibition about the Large Hadron Collider, the atom-smashing machine used to identify the Higgs boson in Switzerland.