If you are looking for just spectra then try

https://omlc.org/spectra/PhotochemCAD/html/042.html

https://omlc.org/spectra/PhotochemCAD/html/090.html

Article THE ABSORPTION SPECTRA OF BENZENE AND TOLUENE IN ALCOHOLIC S...

But if you are interest with more fundamental questions about the nature of transitions then please have a look at "Photophysics of aromatic molecules" by Birks.

Please look at the following below links which may help you in your analysis:

https://www.tandfonline.com/doi/abs/10.1080/00387017608067441 https://www.nrcresearchpress.com/doi/pdfplus/10.1139/v58-006

https://pubs.acs.org/doi/abs/10.1021/jp407577m?src=recsys&journalCode=jpcafh

Thanks

Tuhin Khan Isam Eldin Hussein Elgailani Thanks! i will look at this articles.