Measurement of inclusive electrons from open heavy-flavor hadron decays in p plus p collisions at √s=200 GeV with the STAR detector

作者：Abdallah, M. S.; Aboona, B. E.; Adam, J.; Adamczyk, L.; Adams, J. R.; Adkins, J. K.; Agakishiev, G.; Aggarwal, I; Aggarwal, M. M.; Ahammed, Z.; Alekseev, I; Anderson, D. M.; Aparin, A.; Aschenauer, E. C.; Ashraf, M. U.; Atetalla, F. G.; Attri, A.; Averichev, G. S.; Bai, X.; Bairathi, V; Baker, W.; Cap, J. G. Ball; Barish, K.; Behera, A.; Bellwied, R.; Bhagat, P.; Bhasin, A.; Bielcik, J.; Bielcikova, J.; Bordyuzhin, I. G.; Brandenburg, J. D.; Brandin, A., V; Bunzarov, I; Cai, X. Z.; Caines, H.

来源：Physical Review D, 2022, 105(3): 032007.

DOI：10.1103/PhysRevD.105.032007

• AU COLLISIONS
• MULTIPLICITY
• DEPENDENCE
• CHARM

We report a new measurement of the production cross section for inclusive electrons from open heavy-flavor hadron decays as a function of transverse momentum (p(T)) at midrapidity (vertical bar y vertical bar < 0.7) in p + p collisions at root s = 200 GeV. The result is presented for 2.5 < P-T < 10 GeV/c with an improved precision above 6 GeV/c with respect to the previous measurements, providing more constraints on perturbative QCD calculations. Moreover, this measurement also provides a high-precision reference for measurements of nuclear modification factors for inclusive electrons from open-charm and -bottom hadron decays in heavy-ion collisions.