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4 results on '"Roman, V. Canoa"'

1. Measurement of charm and bottom production from semileptonic hadron decays in p+p collisions at s=200 GeV

Author

Aidala, C, Akiba, Y, Alfred, M, Andrieux, V, Apadula, N, Asano, H, Azmoun, B, Babintsev, V, Bandara, NS, Barish, KN, Bathe, S, Bazilevsky, A, Beaumier, M, Belmont, R, Berdnikov, A, Berdnikov, Y, Blau, DS, Bok, JS, Brooks, ML, Bryslawskyj, J, Bumazhnov, V, Campbell, S, Roman, V Canoa, Cervantes, R, Y., C, Chiu, M, Choi, IJ, Choi, JB, Citron, Z, Connors, M, Cronin, N, Csanád, M, Csörgő, T, Danley, TW, Daugherity, MS, David, G, DeBlasio, K, Dehmelt, K, Denisov, A, Deshpande, A, Desmond, EJ, Dion, A, Dixit, D, H., J, Drees, A, Drees, KA, Durham, JM, Durum, A, Enokizono, A, En’yo, H, Esumi, S, Fadem, B, Fan, W, Feege, N, Fields, DE, Finger, M, Fokin, SL, Frantz, JE, Franz, A, Frawley, AD, Fukuda, Y, Gal, C, Gallus, P, Gamez, EA, Garg, P, Ge, H, Giordano, F, Goto, Y, Grau, N, Greene, SV, Perdekamp, M Grosse, Gunji, T, Guragain, H, Hachiya, T, Haggerty, JS, Hahn, KI, Hamagaki, H, Hamilton, HF, Han, SY, Hanks, J, Hasegawa, S, Haseler, TOS, He, X, Hemmick, TK, Hill, JC, Hill, K, Hodges, A, Hollis, RS, Homma, K, Hong, B, Hoshino, T, Hotvedt, N, Huang, J, Huang, S, Imai, K, Inaba, M, Iordanova, A, Isenhower, D, and Ishimaru, S

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, hep-ex, nucl-ex
Abstract

Measurements of the differential production of electrons from open-heavy-flavor hadrons with charm- and bottom-quark content in p+p collisions at s=200 GeV are presented. The measurements proceed through displaced-vertex analyses of electron tracks from the semileptonic decay of charm and bottom hadrons using the PHENIX silicon-vertex detector. The relative contribution of electrons from bottom decays to inclusive heavy-flavor-electron production is found to be consistent with fixed-order-plus-next-to-leading-log perturbative-QCD calculations within experimental and theoretical uncertainties. These new measurements in p+p collisions provide a precision baseline for comparable forthcoming measurements in A+A collisions.

Published
2019

2. Measurements of μμ pairs from open heavy flavor and Drell-Yan in p+p collisions at s=200 GeV

Author

Aidala, C, Akiba, Y, Alfred, M, Andrieux, V, Apadula, N, Asano, H, Azmoun, B, Babintsev, V, Bagoly, A, Bandara, NS, Barish, KN, Bathe, S, Bazilevsky, A, Beaumier, M, Belmont, R, Berdnikov, A, Berdnikov, Y, Blau, DS, Boer, M, Bok, JS, Brooks, ML, Bryslawskyj, J, Bumazhnov, V, Campbell, S, Roman, V Canoa, Cervantes, R, Y., C, Chiu, M, Choi, IJ, Choi, JB, Citron, Z, Connors, M, Cronin, N, Csanád, M, Csörgő, T, Danley, TW, Daugherity, MS, David, G, DeBlasio, K, Dehmelt, K, Denisov, A, Deshpande, A, Desmond, EJ, Dion, A, Dixit, D, H., J, Drees, A, Drees, KA, Durham, JM, Durum, A, Enokizono, A, En’yo, H, Esumi, S, Fadem, B, Fan, W, Feege, N, Fields, DE, Finger, M, Fokin, SL, Frantz, JE, Franz, A, Frawley, AD, Fukuda, Y, Gal, C, Gallus, P, Garg, P, Ge, H, Giordano, F, Goto, Y, Grau, N, Greene, SV, Perdekamp, M Grosse, Gunji, T, Guragain, H, Hachiya, T, Haggerty, JS, Hahn, KI, Hamagaki, H, Hamilton, HF, Han, SY, Hanks, J, Hasegawa, S, Haseler, TOS, He, X, Hemmick, TK, Hill, JC, Hill, K, Hodges, A, Hollis, RS, Homma, K, Hong, B, Hoshino, T, Hotvedt, N, Huang, J, Huang, S, Imai, K, Inaba, M, Iordanova, A, and Isenhower, D

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex
Abstract

PHENIX reports differential cross sections of μμ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in p+p collisions at s=200 GeV at forward and backward rapidity (1.2

Published
2019

3. Measurement of ϕ-meson production at forward rapidity in p+p collisions at s=510 GeV and its energy dependence from s=200 GeV to 7 TeV

Author

Adare, A, Aidala, C, Ajitanand, NN, Akiba, Y, Akimoto, R, Alfred, M, Apadula, N, Aramaki, Y, Asano, H, Atomssa, ET, Awes, TC, Azmoun, B, Babintsev, V, Bagoly, A, Bai, M, Bandara, NS, Bannier, B, Barish, KN, Bathe, S, Bazilevsky, A, Beaumier, M, Beckman, S, Belmont, R, Berdnikov, A, Berdnikov, Y, Black, D, Boer, M, Bok, JS, Boyle, K, Brooks, ML, Bryslawskyj, J, Buesching, H, Bumazhnov, V, Campbell, S, Roman, V Canoa, Chen, C-H, Y., C, Chiu, M, Choi, IJ, Choi, JB, Chujo, T, Citron, Z, Connors, M, Csanád, M, Csörgő, T, Danley, TW, Datta, A, Daugherity, MS, David, G, DeBlasio, K, Dehmelt, K, Denisov, A, Deshpande, A, Desmond, EJ, Ding, L, Dion, A, H., J, Drees, A, Drees, KA, Durham, JM, Durum, A, Enokizono, A, En’yo, H, Esumi, S, Fadem, B, Fan, W, Feege, N, Fields, DE, Finger, M, Fokin, SL, Frantz, JE, Franz, A, Frawley, AD, Fukuda, Y, Gal, C, Gallus, P, Garg, P, Ge, H, Giordano, F, Glenn, A, Goto, Y, Grau, N, Greene, SV, Perdekamp, M Grosse, Gu, Y, Gunji, T, Guragain, H, Hachiya, T, Haggerty, JS, Hahn, KI, Hamagaki, H, Han, SY, Hanks, J, Hasegawa, S, Haseler, TOS, He, X, Hemmick, TK, Hill, JC, and Hill, K

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, hep-ex
Abstract

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section of φ(1020)-meson production at forward rapidity in p+p collisions at s=510 GeV via the dimuon decay channel. The partial cross section in the rapidity and pT ranges 1.2

Published
2018

4. Nonperturbative transverse-momentum-dependent effects in dihadron and direct photon-hadron angular correlations in p+p collisions at s=200 GeV

Author

Aidala, C, Akiba, Y, Alfred, M, Andrieux, V, Apadula, N, Asano, H, Azmoun, B, Babintsev, V, Bagoly, A, Bandara, NS, Barish, KN, Bathe, S, Bazilevsky, A, Beaumier, M, Belmont, R, Berdnikov, A, Berdnikov, Y, Blau, DS, Boer, M, Bok, JS, Brooks, ML, Bryslawskyj, J, Bumazhnov, V, Campbell, S, Roman, V Canoa, Cervantes, R, Y., C, Chiu, M, Choi, IJ, Choi, JB, Citron, Z, Connors, M, Cronin, N, Csanád, M, Csörgő, T, Danley, TW, Daugherity, MS, David, G, DeBlasio, K, Dehmelt, K, Denisov, A, Deshpande, A, Desmond, EJ, Dion, A, Dixit, D, H., J, Drees, A, Drees, KA, Durham, JM, Durum, A, Enokizono, A, En’yo, H, Esumi, S, Fadem, B, Fan, W, Feege, N, Fields, DE, Finger, M, Fokin, SL, Frantz, JE, Franz, A, Frawley, AD, Fukuda, Y, Gal, C, Gallus, P, Garg, P, Ge, H, Giordano, F, Goto, Y, Grau, N, Greene, SV, Perdekamp, M Grosse, Gunji, T, Guragain, H, Hachiya, T, Haggerty, JS, Hahn, KI, Hamagaki, H, Hamilton, HF, Han, SY, Hanks, J, Hasegawa, S, Haseler, TOS, He, X, Hemmick, TK, Hill, JC, Hill, K, Hodges, A, Hollis, RS, Homma, K, Hong, B, Hoshino, T, Hotvedt, N, Huang, J, Huang, S, Imai, K, Inaba, M, Iordanova, A, and Isenhower, D

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, hep-ex, nucl-ex
Abstract

Dihadron and isolated direct photon-hadron angular correlations are measured in p+p collisions at s=200 GeV. The correlations are sensitive to nonperturbative initial-state and final-state transverse momenta kT and jT in the azimuthal nearly back-to-back region Δφ∼π. To have sensitivity to small transverse momentum scales, nonperturbative momentum widths of pout, the out-of-plane transverse-momentum component perpendicular to the trigger particle, are measured. In this region, the evolution of pout can be studied when several different hard scales are measured. These widths are used to investigate possible effects from transverse-momentum-dependent factorization breaking. When accounting for the longitudinal-momentum fraction of the away-side hadron with respect to the near-side trigger particle, the widths are found to increase with the hard scale; this is qualitatively similar to the observed behavior in Drell-Yan and semi-inclusive deep-inelastic scattering interactions, where factorization is predicted to hold. The momentum widths are also studied as a function of center-of-mass energy by comparing to previous measurements at s=510 GeV. The nonperturbative jet widths also appear to increase with s at a similar xT, which is qualitatively consistent to similar measurements in Drell-Yan interactions. Future detailed global comparisons between measurements of processes where transverse-momentum-dependent factorization is predicted to hold and be broken will provide further insight into the role of color in hadronic interactions.

Published
2018

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