J/ψ production by 24 GeV/c protons

Bamberger, A.; Binon, Freddy; Bricman, C.; Brüning, H.; Duteil, P.; Gouanère, M.; Hartung, R.; Jansen, John A.; Lagnaux, Jean-Pierre; Massas, G.; Peigneux, Jean Pierre; Sillou, D.; Spighel, M.; Stroot, Jean-Pierre; Vilain, P.

doi:10.1016/0550-3213(78)90481-9

Cited by 43 publications

(29 citation statements)

References 22 publications

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“…J/ψ production cross sections in proton-induced interactions [22][23][24][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. pp and pA measurements are indicated by different symbols.…”

Section: Comparison With Other Resultsmentioning

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

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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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Section: Comparison With Other Resultsmentioning

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

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“…Their iconographies are given new meanings and workers lack the attachment to each other to reclaim the spaces. Bamberger and Davidson (1998) found this to be the case for those who lost their work as mass deindustrialization began in the 1980s. As factories closed, a sense of self deteriorated as workers lost their sense of belonging and a framework that valued them (Bamberger and Davidson 1998).…”

Section: Class Community and Lossmentioning

confidence: 97%

“…Bamberger and Davidson (1998) found this to be the case for those who lost their work as mass deindustrialization began in the 1980s. As factories closed, a sense of self deteriorated as workers lost their sense of belonging and a framework that valued them (Bamberger and Davidson 1998). Reproducing a collective workplace culture is less possible; instead, the individual is expected to work for the individual's sake.…”

Section: Class Community and Lossmentioning

confidence: 97%

“…This had a trickledown effect with industry shutdowns and downsizing becoming the norm thereafter. Medway's story is of course not unique as closures dismantled communities whom for generations had relied on local industries for financial, social and cultural stability (Bamberger and Davidson 1998;Dudley 1994;Linkon 2018). With the rise of neo-liberal narratives, came a devaluation of that which had once provided this stability, and a blame on communities for not recovering quickly enough (Dudley 1994).…”

Section: Introductionmentioning

confidence: 99%

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Dirty work: cultural iconography and working‐class pride in industrial apprenticeships

Pleasant

2019

British Journal of Sociology

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In the seemingly routine and the everyday, lie layers of cultural and social symbolism. So it is with dirt. This article examines the social and cultural roles of dirt within socialization practices in working‐class industrial and ex‐industrial communities. Drawn from oral history accounts with 46 former and current engineering apprentices, the discussion demonstrates dirt as a concept and a practicality, and how the idea of ‘getting dirty’ provided a cultural imagery used to renegotiate moral boundaries that devalue working class, masculine experiences and identities. Building on from the work of Skeggs (1997, 2004, 2011), it demonstrates the lived experience of value within the industrial workplace past and present. Through dirt, the role of cultural artefacts and iconography within working‐class experience and workplace training is explored. Additionally, the role of a cultural icon like dirt in the intergenerational dialogues of workplace communities is given new attention. In doing so the article argues that while after decades of underinvestment in apprenticeships as a model for training in the UK, a recent resurgence in interest can go some way in overcoming the long‐term effects of the loss of large‐scale industrial work. However, the cultures of work attached to the apprenticeships of the past are, within deindustrialization, much more complicated to develop or recreate.

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“…However, as pointed out earlier, the quarkonia produced at the FAIR energies in the midrapidity (p z 0) would have very small p T 's. Experiments that measure J /ψ production cross sections in p + A collisions at the Brookhaven National Laboratory-Alternating Gradient Synchrotron [24] and the CERN-PS [25] in the same energy domain as the FAIR reported the p T distribution to be described as p T exp(−6p T ) or p T exp(−ap 2 T ) with a = 1.6 GeV −2 , respectively. Such ansätze correspond to an average transverse momentum of p T 0.17 GeV (exponential distribution) or p T 0.45 GeV (Gaussian distribution).…”

mentioning

confidence: 97%

Charmonium suppression in a baryon-rich quark-gluon plasma

2013

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We have investigated the survival probability of different charmonium states in a high baryon density parton plasma, expected to be produced in nuclear collisions at the Facility for Antiproton and Ion Research. Charmonia are assumed to undergo complete dissociation by color screening if the in-medium Debye radius becomes comparable to the spatial size of the corresponding bound state. Results indicate a nontrivial dependence of the suppression pattern on the plasma evolution dynamics. A much larger magnitude of suppression is foreseen induced by cold nuclear matter compared to that due to plasma screening. PACS number(s): 25.75.Dw, 25.75.Nq In relativistic nuclear collisions, J /ψ suppression has long been predicted as an unambiguous and experimentally viable signature to indicate the possible occurrence of phase transition to quark-gluon plasma [1]. At the CERN Super Proton Synchrotron (SPS), data on J /ψ suppression were collected for Pb + Pb and In + In collisions, respectively, by the NA50 [2] and NA60 [3] Collaborations at a beam kinetic energy (E b ) of 158 A GeV. Subsequent measurements of charmonium production by the NA60 Collaboration in p + A collisions at the same energy [4], analyzed within the Glauber model framework, suggest that the relative charmonium yield in In + In collisions are in accord within errors with suppression induced by cold nuclear matter (CNM). An anomalous suppression of about 25%-30% still remains visible in the most central Pb + Pb collisions. To date, no measurement exists on charmonium production in heavy ion collisions below the top SPS energy, primarily due to the extremely low production cross sections. The upcoming compressed baryonic matter experiment at the Facility for Antiproton and Ion Research (FAIR) [5] in GSI, Germany, for the first time, is aiming at the measurement of charmonium production in low-energy nuclear collisions, over a range of E b = 10-40 A GeV. In this energy domain, the highest possible baryon densities are expected to be produced at the center of the collision zone [6]. This might lead to a density-driven QCD phase transition of the nuclear matter to a baryon-rich quark-gluon plasma (QGP). In the present Rapid Communication, we plan to estimate the amount of dissociation of the charmonium states induced by color screening inside a hot baryonic plasma. For this purpose, we have developed a variant of the static geometrical threshold model [7]. The Debye screening mass as a function of temperature and baryon chemical potential m D (T , μ B ) in a dynamically evolving plasma is used to decide the fate of different charmonium states implanted in the medium.Quarkonium suppression in nuclear collisions at SPS, the BNL Relativistic Heavy Ion Collider (RHIC), and the CERN Large Hadron Collider has been studied at length in literature [8][9][10][11][12][13][14][15] by using geometrical screening models. Based on semiclassical arguments, they assume some sharply defined resonance formation time and a suppression which is total or * partha.bhaduri@vecc.go...

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J/ψ production by 24 GeV/c protons

Cited by 43 publications

References 22 publications

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

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

Dirty work: cultural iconography and working‐class pride in industrial apprenticeships

Charmonium suppression in a baryon-rich quark-gluon plasma

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