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We present a systematic study of transverse mass spectra ($m_T$) of mesonsand baryons at RHIC and LHC energies. In an earlier study, it was shown thatall the mesons produced in p+p and d+Au collisions at $\sqrt{s_{NN}}$ = 200 GeVfollow $m_T$ scaling while in Au+Au collisions at same energy the mesons withstrange and charm quark contents do not follow $m_T$ scaling which can beattributed to medium modifications.  We extend this study for baryons produced in all above colliding systems at$\sqrt{s_{NN}}$ = 200 GeV. Although all available baryon spectra behavedifferently from mesons but are found to scale with protons for both p+p andd+Au collisions. In case of Au+Au collisions, the strange baryons behavedifferently from protons.  This study has also been performed on the meson spectra in p+p collisions at62.4 GeV which lies in between the highest RHIC energy and SPS energy where the$m_T$ scaling was first observed and we arrive at same conclusions as those at200 GeV.  We test the $m_T$ scaling at LHC with the first meson spectra measured in p+pcollisions at 900 GeV and find that the $m_T$ spectra of kaons and $\phi$ donot scale with pions. Thus $m_T$ scaling which was working well up to p+pcollisions at 200 GeV seems to be broken. Here we use all data measured in themid rapidity region. Baryon to meson ratio is studied as a function of $m_T$,at different energies and for different systems and is found that this ratiofor p+p at 900 GeV is quite different from that in p+p collisions at RHICenergies.

Transverse mass spectra and scaling of hadrons at RHIC and LHC energies