Improved measurement of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>b</mml:mi><mml:mover accent="true"><mml:mi>b</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>production cross section in 920 GeV fixed-target proton-nucleus collisions

Abt, I.; Adams, M. R.; Albrecht, H.; Amaral, Vasco; Amorim, A.; Aplin, S.; Aushev, V.; Bagaturia, Y.; Balagura, V.; Bargiotti, M.; Barsukova, O.; Bastos, J.; Bauer, C.; Bauer, Th.; Bel'kov, A.A.; Bertin, A.; Bobchenko, B.; Boecker, M.; Bogatyrev, A.; Böhm, G.; Braeuer, M.; Bruinsma, M.; Bruschi, M.; Buchholz, P.; Buran, T.; Carvalho, J.; Conde, P.; Cruse, C.; Dam, M.; Danielsen, K.M.; Danilov, M.; Castro, S. De; Deppe, H.; Dong, X.; Dreis, H. B.; Egorytchev, V.; Ehret, K.; Eisele, F.; Emeliyanov, D.; Essenov, S.; Fabbri, L.; Faccioli, P.; Feuerstack-Raible, M.; Flammer, J.; Fominykh, B.; Funcke, M.; Garrido, Ll.; Giacobbe, B.; Glaess, J.; Goloubkov, D.; Goloubkov, Y.; Golutvin, A.; Golutvin, I.; Gorbounov, I.; Gorišek, A.; Gouchtchine, O.; Goulart, D. C.; Gradl, S.; Gradl, W.; Guilitsky, Y.; Hansen, J. D.; Hernández, J. M.; Hofmann, W.; Hott, T.; Hulsbergen, W.; Husemann, U.; Igonkina, O.; Ispiryan, M.; Jagla, T.; Jiang, C. H.; Kapitza, H.; Karabekyan, S.; Karpenko, N.N.; Keller, S.; Khasanov, F.; Kiryushin, Yu.T.; Knöpfle, K. T.; Kolanoski, H.; Korpar, S.; Krauss, C. B.; Kreuzer, P.; Križan, P.; Kruecker, D.; Kvaratskheliia, T.; Lanev, A.; Lau, K.; Lewendel, B.; Löhse, T.; Mäenner, R.; Masciocchi, S.; Massa, I.; Matchikhilian, L.; Medin, G.; Medinnis, M.; Mevius, M.; Michetti, A.; Mikhailov, Yu. M.; Mizuk, R.; Mureşan, R.; Negodaev, M.; Noerenberg, M.; Nowak, S.; Vera, María Teresa Núñez Pardo de; Ouchrif, M.; Ould-Saada, F.; Aranda, C. Padilla; Peralta, D.; Pernack, R.; Pestotnik, R.; Piccinini, M.; Pleier, M. A.; Poli, M.; Popov, V.; Pose, D.; Pugatch, V.; Pylypchenko, Y.; Pyrlik, J.; Reeves, K.; Reßing, D.; Riu, I.; Robmann, P.; Rybnikov, V.; Sanchez, F. J. Munoz; Sbrizzi, A.; Schmelling, M.; Schmidt, B.; Schreiner, A.; Schroeder, H.; Schwartz, A. J.; Schwarz, A. S.; Schwenninger, B.; Schwingenheuer, B.; Sciacca, F. G.; Semprini‐Cesari, N.; Shuvalov, S.; Sözüer, L.; Solunin, S.; Somov, A.; Somov, S.; Spengler, J.; Spighi, R.; Спиридонов, А.; Stanovnik, A.; Starič, M.; Stegmann, C.; Symalla, M.; Tikhomirov, I.; Titov, M.; Tsakov, I.; Uwer, U.; Eldik, C. van; Vassiliev, Y.; Villa, M.; Vitale, A.; Vukotić, I.; Wahlberg, H.; Walenta, A.H.; Walter, Michael; Wang, J. J.; Wegener, D.; Werthenbach, U.; Wolters, H.; Wurth, R.; Wurz, A.; Zaitsev, Yu.; Zavertyaev, M.; Zeuner, T.; Zhelezov, A.; Zheng, Z. P.; Zimmermann, R.; Živko, T.; Zoccoli, À.; Aleksandrov, A.; Batista, J.; Grimaldi, F.; Keßler, J.; Küpper, Sebastian; Nedden, M. zur; Prystupa, S.; Rick, H.; Rostovtseva, I.; Silva, L.; Subramania, Halasya Siva; Lomonosov, B.; Agari, M.; Belotelov, I.; Erhan, S.; Gellrich, A.; Hohlmann, M.; Kisel, I.; Klinkby, E. B.; Mankel, R.; Petersen, B. A.; Schwanke, U.

doi:10.1103/physrevd.73.052005

Cited by 16 publications

(3 citation statements)

References 62 publications

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“…These measurements can be compared to the global trend of the bb cross section as a function of ffiffi ffi s p [27][28][29]31,[67][68][69][70][71][72], as shown in Fig. 29.…”

Section: Bottom Cross Sectionmentioning

confidence: 99%

Measurements of μμ pairs from open heavy flavor and Drell-Yan in p+p collisions at s=200
Aidala¹,
Akiba²,
Alfred³
et al. 2019
Phys. Rev. D
41
2
39
0
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PHENIX reports differential cross sections of μμ pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in p þ p collisions at ffiffi ffi s p ¼ 200 GeV at forward and backward rapidity (1.2 < jηj < 2.2). The μμ pairs from cc, bb, and Drell-Yan are separated using a template fit to unlike-and like-sign muon pair spectra in mass and p T. The azimuthal opening angle correlation between the muons from cc and bb decays and the pair-p T distributions are compared to distributions generated using PYTHIA and POWHEG models, which both include next-to-leading order processes. The measured distributions for pairs from cc are consistent with PYTHIA calculations. The cc data present narrower azimuthal correlations and softer p T distributions compared to distributions generated from POWHEG. The bb data are well described by both models. The extrapolated total cross section for bottom production is 3.75 AE 0.24ðstatÞ AE 0.35 0.50 ðsystÞ AE 0.45ðglobalÞ ½μb, which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy and is approximately a factor of 2 higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantumchromodynamics calculations.

show abstract

“…These measurements can be compared to the global trend of the bb cross section as a function of ffiffi ffi s p [27][28][29]31,[67][68][69][70][71][72], as shown in Fig. 29.…”

Section: Bottom Cross Sectionmentioning

confidence: 99%

Measurements of μμ pairs from open heavy flavor and Drell-Yan in p+p collisions at s=200
Aidala¹,
Akiba²,
Alfred³
et al. 2019
Phys. Rev. D
41
2
39
0
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show abstract

“…BR photons emitted before the magnet are searched for in the ECAL and the momentum of the electron is corrected if such a cluster is found. Details of this procedure are explained in [18].…”

Section: Event Selectionmentioning

confidence: 99%

Measurement of the J/ψ production cross section in 920 GeV/c fixed-target proton–nucleus interactions

Abt¹,

Adams²,

Albrecht³

et al. 2006

Physics Letters B

Self Cite

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The mid-rapidity (dσ pN /dy at y=0) and total (σ pN ) production cross sections of J/ψ mesons are measured in proton-nucleus interactions. Data collected by the HERA-B experiment in interactions of 920 GeV/c protons with carbon, titanium and tungsten targets are used for this analysis. The J/ψ mesons are reconstructed by their decay into lepton pairs. The total production cross section obtained is 3 σ J/ψ pN = 663 ± 74 ± 46 nb/nucleon. In addition, our result is compared with previous measurements.

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“…Cross section measurements for bottom production in hadron-hadron collision experiments have been made from lower energy fixed-target experiments [2][3][4] ( √ s < 45 GeV) up to collider energies ( √ s > 100 GeV). It was found that pQCD predictions match experimental results well at energies greater than √ s = 1 TeV [5][6][7][8][9][10][11][12], but less so at lower energies.…”

Section: Introductionmentioning

confidence: 99%

Production of $b\bar{b}$ at forward rapidity in $p$+$p$ collisions at $\sqrt{s}=510$ GeV

Acharya,

Adare,

Aidala

et al. 2020

Preprint

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The cross section of bottom quark-antiquark (b b) production in p+p collisions at √ s = 510 GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider. The results are based on the yield of high mass, like-sign muon pairs measured within the PHENIX muon arm acceptance (1.2 < |y| < 2.2). The b b signal is extracted from like-sign dimuons by utilizing the unique properties of neutral B meson oscillation. We report a differential cross section of dσ b b→µ ± µ ± /dy = 0.16 ± 0.01 (stat) ± 0.02 (syst) ± 0.02 (global) nb for like-sign muons in the rapidity and pT ranges 1.2 < |y| < 2.2 and pT > 1 GeV/c, and dimuon mass of 5-10 GeV/c 2 . The extrapolated total cross section at this energy for b b production is 13.1 ± 0.6 (stat) ± 1.5 (syst) ± 2.7 (global) µb. The total cross section is compared to a perturbative quantum chromodynamics calculation and is consistent within uncertainties. The azimuthal opening angle between muon pairs from b b decays and their pT distributions are compared to distributions generated using ps pythia6, which includes nextto-leading order processes. The azimuthal correlations and pair pT distribution are not very well described by pythia calculations, but are still consistent within uncertainties. Flavor creation and flavor excitation subprocesses are favored over gluon splitting.

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Improved measurement of thebb¯production cross section in 920 GeV fixed-target proton-nucleus collisions

Cited by 16 publications

References 62 publications

Measurements of μμ pairs from open heavy flavor and Drell-Yan in p+p collisions at s=200
Aidala¹,
Akiba²,
Alfred³
et al. 2019
Phys. Rev. D
41
2
39
0
View full text Add to dashboard Cite

Measurements of μμ pairs from open heavy flavor and Drell-Yan in p+p collisions at s=200
Aidala¹,
Akiba²,
Alfred³
et al. 2019
Phys. Rev. D
41
2
39
0
View full text Add to dashboard Cite

Measurement of the J/ψ production cross section in 920 GeV/c fixed-target proton–nucleus interactions

Production of $b\bar{b}$ at forward rapidity in $p$+$p$ collisions at $\sqrt{s}=510$ GeV

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Improved measurement of thebb¯production cross section in 920 GeV fixed-target proton-nucleus collisions

Cited by 16 publications

References 62 publications

Measurements of μμ pairs from open heavy flavor and Drell-Yan in p+p collisions at s=200 Aidala1, Akiba2, Alfred3 et al. 2019Phys. Rev. D412390View full textAdd to dashboardCite

Measurements of μμ pairs from open heavy flavor and Drell-Yan in p+p collisions at s=200 Aidala1, Akiba2, Alfred3 et al. 2019Phys. Rev. D412390View full textAdd to dashboardCite

Measurement of the J/ψ production cross section in 920 GeV/c fixed-target proton–nucleus interactions

Production of $b\bar{b}$ at forward rapidity in $p$+$p$ collisions at $\sqrt{s}=510$ GeV

Contact Info

Product

Resources

About

Measurements of μμ pairs from open heavy flavor and Drell-Yan in p+p collisions at s=200
Aidala¹,
Akiba²,
Alfred³
et al. 2019
Phys. Rev. D
41
2
39
0
View full text Add to dashboard Cite

Measurements of μμ pairs from open heavy flavor and Drell-Yan in p+p collisions at s=200
Aidala¹,
Akiba²,
Alfred³
et al. 2019
Phys. Rev. D
41
2
39
0
View full text Add to dashboard Cite