The cross section for $$ep \to e b\bar{b} X$$ in photoproduction is measured with the H1 detector at the $ep$-collider HERA. The decay channel $$b\bar{b} \to ee X^\prime$$ is selected by identifying the semi-electronic decays of the b-quarks. The total production cross section is measured in the kinematic range given by the photon virtuality $$Q^2 \le 1 GeV^2$$, the inelasticity $$0.05 \le y \le 0.65$$ and the pseudorapidity of the $$b$$-quarks $$|\eta(b)|$$,$$|\eta(\bar{b})| \le 2$$. The differential production cross section is measured as a function of the average transverse momentum of the beauty quarks <$$P_T$$(b)> down to the threshold. The results are compared to next-to-leading-order QCD predictions.
Aaron, F. D., et al. "Measurement of beauty photoproduction near threshold using di-electron events with the H1 detector at HERA." European Physical Journal. C, Particles and Fields, vol. 72, no. 10, Oct. 2012. https://doi.org/10.1140/epjc/s10052-012-2148-1
Aaron, F. D., Alexa, C., Andreev, V., Backovic, S., Baghdasaryan, A., Baghdasaryan, S., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Belov, P., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., ... Zomer, F. (2012). Measurement of beauty photoproduction near threshold using di-electron events with the H1 detector at HERA. European Physical Journal. C, Particles and Fields, 72(10). https://doi.org/10.1140/epjc/s10052-012-2148-1
Aaron, F. D., Alexa, C., Andreev, V., et al., "Measurement of beauty photoproduction near threshold using di-electron events with the H1 detector at HERA," European Physical Journal. C, Particles and Fields 72, no. 10 (2012), https://doi.org/10.1140/epjc/s10052-012-2148-1
@article{osti_1423276,
author = {Aaron, F. D. and Alexa, C. and Andreev, V. and Backovic, S. and Baghdasaryan, A. and Baghdasaryan, S. and Barrelet, E. and Bartel, W. and Begzsuren, K. and Belousov, A. and others},
title = {Measurement of beauty photoproduction near threshold using di-electron events with the H1 detector at HERA},
annote = {The cross section for $ep \to e b\bar{b} X$ in photoproduction is measured with the H1 detector at the $ep$-collider HERA. The decay channel $b\bar{b} \to ee X^\prime$ is selected by identifying the semi-electronic decays of the b-quarks. The total production cross section is measured in the kinematic range given by the photon virtuality $Q^2 \le 1 GeV^2$, the inelasticity $0.05 \le y \le 0.65$ and the pseudorapidity of the $b$-quarks $|\eta(b)|$,$|\eta(\bar{b})| \le 2$. The differential production cross section is measured as a function of the average transverse momentum of the beauty quarks down to the threshold. The results are compared to next-to-leading-order QCD predictions.},
doi = {10.1140/epjc/s10052-012-2148-1},
url = {https://www.osti.gov/biblio/1423276},
journal = {European Physical Journal. C, Particles and Fields},
issn = {ISSN 1434-6044},
number = {10},
volume = {72},
place = {United States},
publisher = {Springer},
year = {2012},
month = {10}}
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